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Molded Case Circuit Breakers

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Molded case circuit breakers (MCCB) are electrical switches that are designed to trip during a short circuit or overload to protect against electrical faults and equipment failure. Overload protection is accomplished through a thermal operation with a slight time delay. When an overcurrent passes through an MCCB, a bimetallic strip is heated and bends. The bending causes a mechanical latch to release, opening the MCCB contacts, halting the flow of current. When the overcurrent is removed, the contacts close and the MCCB is reset. Short circuit protection is accomplished through an electromagnetic operation that is instantaneous. A current coil is tripped causing the mechanical release of the latch that opens the contacts that halt the flow of current. When the overcurrent is removed, the MCCB can be reset.

Molded case circuit breakers are similar to miniature circuit breakers (MCB) in methodology, however the main difference between the two is in the capacity. MCBs current rating is under 100 amps with an interrupting rating under 18,000 amps while MCCBs current rating is 1,000 amps with an adjustable trip function that allows an interrupting range from 10,000 amps to 200,000 amps.

Subcategories

ABB Molded Case Circuit Breakers
Square D Molded Case Circuit Breakers
Square D Molded Case B Frame Circuit Breakers
Square D Molded Case E Frame Circuit Breakers
Square D Molded Case H Frame Circuit Breakers
Square D Molded Case J Frame Circuit Breakers
Square D Molded Case L Frame Circuit Breakers
Square D Molded Case LA Frame Circuit Breakers
Square D Molded Case LH Frame Circuit Breakers
Square D Molded Case M Frame Circuit Breakers
Square D Molded Case P Frame Circuit Breakers
Square D Molded Case Q Frame Circuit Breakers
Square D Molded Case R Frame Circuit Breakers
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ABB ZDVKUSBQ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBQ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$189898.54
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBN200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBN200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$186731.13
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBK200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBK200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$186071.42
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBJ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBJ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$182102.57
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBF000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBF000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$180156.51
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBE000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBE000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$177719.15
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBD000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBD000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$175916.96
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBC000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBC000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$177240.62
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBB000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBB000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$175561.00
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSBA000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSBA000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$174317.27
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAQ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAQ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$216044.58
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAN200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAN200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$212879.30
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAK200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAK200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$212218.53
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAJ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAJ200A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$208249.68
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAF000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAF000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$206301.49
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAE000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAE000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$203868.39
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAD000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAD000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$202063.01
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAC000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAC000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$203386.67
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAB000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAB000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$201708.11
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVKUSAA000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVKUSAA000A000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$200463.31
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBQ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBQ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$144079.81
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBN200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBN200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$140912.40
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBK200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBK200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$140251.64
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBJ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBJ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$136283.85
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBF000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBF000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$134336.73
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBE000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBE000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$131901.48
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBD000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBD000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$130098.23
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBC000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBC000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$131421.90
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBB000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBB000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$129742.27
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURBA000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURBA000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$128498.55
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAQ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAQ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$163352.84
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAN200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAN200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$160187.56
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAK200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAK200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$159525.72
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAJ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAJ200A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$155556.87
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAF000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAF000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$153611.88
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAE000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAE000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$151175.58
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAD000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAD000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$149371.26
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAC000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAC000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$150695.99
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAB000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAB000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$149016.37
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDVJURAA000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDVJURAA000A000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$147772.63
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDLK00B00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDLK00B00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$145323.54
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDLK00A00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDLK00A00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$167123.46
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDLJ00B00000000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDLJ00B00000000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$107126.00
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDLJ00A00000000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDLJ00A00000000000XX 600 VAC 4000 Amp Four Pole Configurable Power Circuit Breaker
$123195.38
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDHY00B00000000000XX 600 VAC 6300 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDHY00B00000000000XX 600 VAC 6300 Amp Four Pole Configurable Power Circuit Breaker
$176038.45
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDHY00A00000000000XX 600 VAC 6300 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDHY00A00000000000XX 600 VAC 6300 Amp Four Pole Configurable Power Circuit Breaker
$202443.48
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDHX00B00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDHX00B00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$145323.54
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.
ABB ZDHX00A00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
ABB ZDHX00A00000000000XX 600 VAC 5000 Amp Four Pole Configurable Power Circuit Breaker
$167123.46
E6.2 is the top of the range model with ratings of 6000A, breaking capacity and short time current up to 100kA. The SACE Emax 2 trip units are designed to be used in a wide range of applications. This complete, flexible protection trip unit can be adapted to the actual level of protection required, independently of the complexity of the system. The range is available for three levels of performances, to meet any requirement, from simple to advanced applications. The protection units for power distribution, available in the LI, LSI and LSIG versions, are suited to all distribution systems. These trip units have been designed for a vast range of applications, to be used with transformers, motors and drives.

 

There are two different types of technologies that are commonly used in circuit breakers. 

Magnetic Breakers are designed to react to short circuits or sharp spikes in voltage and current. The more current that passes through the breaker’s electromagnet, the stronger the magnet becomes. When the current exceeds the rating for that particular breaker, the magnetic force becomes strong enough that it will pull the contact back and disconnect it from the other contact, disconnecting power from the device.
Thermal Protection Breakers protect against a sustained overcurrent, or a higher current, for a longer period of time. Thermal protection uses a Bimetal strip that will bend the contacts away from each other to disconnect power. Thermal Magnetic Breakers are the most common type of circuit breakers. They combine magnetic technology to protect against short circuits or sharp spikes and thermal technology that protects against sustained overcurrent for a long period of time.

FAQ

What is a molded case circuit breaker?

A molded case circuit breaker (MCCB) is used when load current exceeds the limit of a miniature circuit breaker (MCB). The MCCB provides protection against overload and short circuit faults.

What is the difference between MCCB and MCB?

The molded case circuit breaker (MCCB) is mainly used for high-power applications, while the miniature circuit breaker (MCB) is mainly used for low-power applications.

What causes MMCB to trip?

There are three main reasons that a molded case circuit breaker (MCCB) will trip: an overloaded circuit, a short circuit and a ground fault.

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