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ABB Molded Case Circuit Breakers

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.

ABB SACE Tmax T series Molded Case Circuit Breakers are available with protection features up to 3200 A and in both 3-pole and 4-pole, fixed version; sizes T4 and T5 in the plug-in version. Thermal magnetic and electronic trip units are available for use in AC/DC or in AC only. It is possible to interchange trip units keeping the same breaking part, so that installation can be upgraded with fewer costs. A complete range of electronic trip units is suitable for different levels of protection, even enhancing selectivity values with Early Fault Detection and Prevention algorithm. SACE Tmax XT series is available in 7 different sizes and protection features of up to 1600A.

Found 8900 items
Filters
Found 8900 items
Manufacturer
ABB (8900)
Breaker Amperage Rating
0.5 Amp (2)
1 Amp (4)
1.5 Amp (1)
1.6 Amp (14)
10 Amp (58)
100 Amp (329)
1000 Amp (518)
110 Amp (51)
1200 Amp (426)
125 Amp (178)
Component
Air Circuit Breaker (3475)
Air Circuit Breaker Switch (217)
GFCI Circuit Breaker (2)
High Performance Circuit Breaker (168)
Molded Case Circuit Breaker (4708)
Molded Case Switch (73)
PROSTOCK Lighting Panel Breaker (16)
Residential Circuit Breaker (2)
Residual Current Device (28)
Breaker Number of Poles
Four Pole (3579)
Single Pole (247)
Six Pole (4)
Three Pole (4532)
Two Pole (324)
Amperage (Molded Case Breaker)
100 Amp (5)
125 Amp (5)
15 Amp (6)
150 Amp (4)
175 Amp (4)
20 Amp (7)
200 Amp (4)
225 Amp (4)
25 Amp (4)
250 Amp (4)
Breaker Voltage Rating
1000 VAC (2)
1000 VDC (2)
1150 VAC (1)
120 VAC (212)
120/240 VAC (237)
1200 VDC (1)
125 VDC (189)
208Y/120 VAC (11)
230 VAC (62)
240 VAC (457)
Frame Type (Molded Case Breaker)
A1 (7)
A2 (11)
E1.2 (1022)
E1.2-A (2)
E150 (217)
E2.2 (1615)
E4.2 (740)
E6.2 (322)
FB 100 (161)
J600 (4)
Interrupt Rating
10 Ka (40)
10 Ka 125 Volt (DC) (5)
10 Ka 240 Volt (5)
10 Ka 250 Volt (DC) (38)
10 Ka 375 Volt (DC) (13)
10 Ka 480Y/277 Volt (24)
10 Ka 500 Volt (DC) (5)
100 Ka (707)
100 Ka 240 Volt (38)
100 Ka 250 Volt (DC) (9)
Interrupt Rating (Molded Case Breaker)
10 Ka (38)
18 Ka (4)
25 Ka (36)
30 Ka (1)
Mounting (Molded Case Breaker)
Panel (2237)
Trip Unit (Molded Case Breaker)
Ekip DIP E-LSIG (12)
Ekip DIP LIG (108)
Ekip DIP LS/I (137)
Ekip DIP LSI (128)
Ekip DIP LSIG (128)
Ekip DIP M-I (17)
Ekip G DIP LS/I (105)
Ekip G Hi-Touch LSIG (100)
Ekip G Touch LSIG (102)
Ekip Hi-Touch LSI (171)
UL Listing (Molded Case Breaker)
Ekip DIP LS/I (15)
Ekip DIP LSI (1)
Ekip DIP LSIG (2)
Ekip DIP M-I (2)
IEC (4)
MA (6)
MCS (2)
TMA (15)
TMF (30)
UL (89)
Normally In Stock
ABB XT6HU3800GFF000XXX - XT6H 800 Ekip Dip LSIG 800 3p FF UL/CSA
Free U.S Ground shipping
$47855.03
$39879.19
Normally In Stock
ABB XT5HU340AFFF000XXX - Three Pole, 400 Amp, 65 kA 480 Volt
Free U.S Ground shipping
$23263.54
$19386.28
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ABB XT6SU3800BFF000XXX - Three Pole, 800 Amp, 50 kA 480 Volt
Free U.S Ground shipping
$23094.94
$19245.78
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ABB XT5HQ340AEFF000XXX - XT5H 400 Ekip Dip LS/I 400 3p FF UL/CSA
Free U.S Ground shipping
$22471.61
$18726.34
Normally In Stock
ABB XT5LU340AKFF000XXX - Three Pole, 400 Amp, 100 kA 480 Volt
Free U.S Ground shipping
$18062.53
$15052.11
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ABB XT4HU3250GFF000XXX - XT4H 250 Ekip LSIG In=250A 3p F F UL/CSA
Free U.S Ground shipping
$2881.04
$2400.87
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ABB XT4LU3250EFF000XXX - XT4L 250 Ekip LS/I In=250A 3p F F UL/CSA
Free U.S Ground shipping
$2728.06
$2273.38
Normally In Stock
ABB XT4LU3250BFF000XXX - XT4L 250 TMA 250 1250..2500 3p FF UL/CSA
Free U.S Ground shipping
$2480.04
$2066.70
Normally In Stock
ABB XT4LU3175BFF000XXX - XT4L 250 TMA 175 875..1750 3p F F UL/CSA
Free U.S Ground shipping
$2480.04
$2066.70
Normally In Stock
ABB XT4LU3175AFF000XXX - XT4L 250 TMF 175-1750 3p F F UL/CSA
Free U.S Ground shipping
$2405.65
$2004.71
Normally In Stock
ABB XT4HQ3250EFF000XXX - XT4H 250 Ekip LS/I In=250A 3p F F UL/CSA
Free U.S Ground shipping
$2312.62
$1927.18
Normally In Stock
ABB XT4HU3250EFF000XXX - Three Pole, 250 Amp, 65 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$2182.44
$1818.70
Normally In Stock
ABB XT4LU3150AFF000XXX - XT4L 250 TMF 150-1500 3p F F UL/CSA
Free U.S Ground shipping
$2165.27
$1804.39
Normally In Stock
ABB XT5NQ340ABFF000XXX - XT5N 400 TMA 400-4000 3p FF UL
Free U.S Ground shipping
$13090.21
$10908.51
Normally In Stock
ABB XT5NU340AEFF000XXX - XT5N 400 Ekip Dip LS/I 400 3p FF UL/CSA
Free U.S Ground shipping
$12448.18
$10373.48
Normally In Stock
ABB XT4HQ3250AFF000XXX - XT4H 250 TMF 250-2500 3p F F UL/CSA
Free U.S Ground shipping
$2054.78
$1712.32
Normally In Stock
ABB XT2LU3100EFF000XXX - XT2L 125 Ekip LS/I In=100A 3p F F UL/CSA
Free U.S Ground shipping
$2046.22
$1705.18
Normally In Stock
ABB XT4HU3250BFF000XXX - XT4H 250 TMA 250 1250..2500 3p FF UL/CSA
Free U.S Ground shipping
$1984.04
$1653.37
Normally In Stock
ABB XT4HU3225BFF000XXX - XT4H 250 TMA 225 1125..2250 3p FF UL/CSA
Free U.S Ground shipping
$1984.04
$1653.37
Normally In Stock
ABB XT4HU3200BFF000XXX - XT4H 250 TMA 200 1000..2000 3p FF UL/CSA
Free U.S Ground shipping
$1984.04
$1653.37
Normally In Stock
ABB XT4HU3175BFF000XXX - XT4H 250 TMA 175 875..1750 3p F F UL/CSA
Free U.S Ground shipping
$1984.04
$1653.37
Normally In Stock
ABB XT5NU330AEFF000XXX - Three Pole, 300 Amp, 35 kA 480 Volt
Free U.S Ground shipping
$11826.92
$9855.77
Normally In Stock
ABB XT4HU3200AFF000XXX - Three Pole, 200 Amp, 65 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1924.52
$1603.77
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ABB SRFN120GF - SPP XT7 UL 1200A NEUTRAL CT KIT
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$9565.71
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ABB XT4SQ3250EFF000XXX - XT4S 250 Ekip LS/I In=250A 3p F F UL/CSA
Free U.S Ground shipping
$1809.19
$1507.66
Normally In Stock
ABB XT5NU340ABFF000XXX - Three Pole, 400 Amp, 35 kA 480 Volt
Free U.S Ground shipping
$10778.42
$8982.02
Normally In Stock
ABB XT4HU3150AFF000XXX - Three Pole, 150 Amp, 65 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1732.21
$1443.51
Normally In Stock
ABB XT5NU330ABFF000XXX - Three Pole, 300 Amp, 35 kA 480 Volt
Free U.S Ground shipping
$10240.31
$8533.59
Normally In Stock
ABB XT4SQ3250BFF000XXX - XT4S 250 TMA 250 1250..2500 3p FF UL/CSA
Free U.S Ground shipping
$1656.58
$1380.48
Normally In Stock
ABB XT4HU3200MFF000XXX - Three Pole, 200 Amp, 65 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1587.23
$1322.69
Normally In Stock
ABB XT2HU3125BFF000XXX - XT2H 125 TMA 125-625..1250 3p FF UL/CSA
Free U.S Ground shipping
$1488.04
$1240.03
Normally In Stock
ABB XT4NQ3250EFF000XXX - XT4N 250 Ekip LS/I In=250A 3p F F UL/CSA
Free U.S Ground shipping
$1473.22
$1227.68
Normally In Stock
ABB XT5NU340AKFF000XXX - Three Pole, 400 Amp, 35 kA 480 Volt
Free U.S Ground shipping
$8891.54
$7409.62
Normally In Stock
ABB XT4HU3100MFF000XXX - Three Pole, 100 Amp, 65 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1428.49
$1190.41
Normally In Stock
ABB XT2LU3030AFF000XXX - XT2L 125 TMF 30-400 3p F F UL/CSA
Free U.S Ground shipping
$1395.32
$1162.77
Normally In Stock
ABB XT2LU3040AFF000XXX - Three Pole, 40 Amp, 100 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1395.32
$1162.77
Normally In Stock
ABB XT2LU3020AFF000XXX - Three Pole, 20 Amp, 100 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1395.32
$1162.77
Normally In Stock
ABB XT4NQ3250BFF000XXX - XT4N 250 TMA 250 1250..2500 3p FF UL/CSA
Free U.S Ground shipping
$1351.34
$1126.12
Normally In Stock
ABB XT4NU3250EFF000XXX - XT4N 250 Ekip LS/I In=250A 3p F F UL/CSA
Free U.S Ground shipping
$1343.06
$1119.22
Normally In Stock
ABB XT4NU3225EFF000XXX - XT4N 250 Ekip LS/I In=225A 3p F F UL/CSA
Free U.S Ground shipping
$1343.06
$1119.22
Normally In Stock
ABB XT4HU3250DFF000XXX - Three Pole, 65 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1289.63
$1074.69
Normally In Stock
ABB XT2SU3125EFF000XXX - XT2S 125 Ekip LS/I In=125A 3p F F UL/CSA
Free U.S Ground shipping
$1259.10
$1049.25
Normally In Stock
ABB XT2SU3100EFF000XXX - XT2S 125 Ekip LS/I In=100A 3p F F UL/CSA
Free U.S Ground shipping
$1259.10
$1049.25
Normally In Stock
ABB XT4NU3250BFF000XXX - Three Pole, 250 Amp, 25 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1220.94
$1017.45
Normally In Stock
ABB XT4NU3200BFF000XXX - Three Pole, 200 Amp, 25 kA 480 Volt, 600 VAC
Free U.S Ground shipping
$1220.94
$1017.45
Normally In Stock
ABB XT4NU3150EFF000XXX - XT4N 250 Ekip LS/I In=150A 3p F F UL/CSA
Free U.S Ground shipping
$1208.74
$1007.28
Normally In Stock
ABB XT3SU3225AFF000XXX - XT3S 225 TMF 225-2250 3p F F UL/CSA
Free U.S Ground shipping
$1208.35
$1006.96
Normally In Stock
ABB XT3SU3200AFF000XXX - XT3S 225 TMF 200-2000 3p F F UL/CSA
Free U.S Ground shipping
$1208.35
$1006.96

What is a Circuit Breaker?

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

Magnetic 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

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.