Specialty Breakers

Specialist molded case circuit breakers (MCCBs) are designed for applications that demand enhanced durability, reliability, and electrical protection beyond standard industrial environments. These breakers are commonly used in engine generator systems, naval and marine installations, and solar power applications where exposure to harsh conditions, frequent cycling, or unique electrical characteristics must be addressed.

Engine generator MCCBs are engineered to handle high inrush currents, repeated start-stop cycles, and elevated operating temperatures associated with generator operation. Navy and marine MCCBs are built to withstand extreme environmental stress, including vibration, high humidity, and corrosive conditions such as saltwater exposure. These designs ensure dependable circuit protection in mission-critical and offshore applications.

Solar complete MCCBs are specifically developed for photovoltaic (PV) systems, offering features such as arc fault protection, high interrupting ratings, and compatibility with a wide range of solar components. These breakers help protect solar installations from overcurrents, short circuits, and fault conditions, supporting safe and efficient energy production. Manufacturers such as Eaton.

Found 143 items
Normally In Stock
Eaton 1491D72G17 Navy & Marine Complete Molded Case Circuit Breaker - 250 Amp
Free U.S Ground shipping
$2835.89
$2363.24
Normally In Stock
Eaton 1491D72G18 Navy & Marine Complete Molded Case Circuit Breaker - 250 Amp
Free U.S Ground shipping
$2835.89
$2363.24
Normally In Stock
Eaton 1491D72G19 Navy & Marine Complete Molded Case Circuit Breaker - 250 Amp
Free U.S Ground shipping
$2835.89
$2363.24
Normally In Stock
Eaton 1483D84G43 Navy & Marine Complete Molded Case Circuit Breaker - 500 Max Volt
Free U.S Ground shipping
$69703.42
$58086.18
Normally In Stock
Eaton 1488D91G22 Navy & Marine Complete Molded Case Circuit Breaker - 800 Amp
Free U.S Ground shipping
$337645.37
$281371.14
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Eaton 1488D91G21 Navy & Marine Complete Molded Case Circuit Breaker - 800 Amp
Free U.S Ground shipping
$326950.12
$272458.43
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Eaton 1230C83G12 Navy & Marine Complete Molded Case Circuit Breaker - 500 Max Volt
Free U.S Ground shipping
$82427.69
$68689.74
Normally In Stock
Eaton 1230C83G08 Navy & Marine Complete Molded Case Circuit Breaker - 500 Max Volt
Free U.S Ground shipping
$83985.50
$69987.92
Normally In Stock
Eaton 1483D84G44 Navy & Marine Complete Molded Case Circuit Breaker - 500 Max Volt
Free U.S Ground shipping
$67295.57
$56079.64

FAQs

Q: What is a molded case circuit breaker (MCCB)?
A molded case circuit breaker is a protective device designed to interrupt electrical circuits during overloads, short circuits, or fault conditions.

Q: What are engine generator MCCBs used for?
They are used in generator systems to handle high starting currents, frequent cycling, and elevated temperatures while providing reliable circuit protection.

Q: What makes marine and navy MCCBs different from standard breakers?
Marine and navy MCCBs are built to withstand harsh conditions such as vibration, humidity, and corrosive environments commonly found in naval and offshore applications.

Q: Why are specialized MCCBs important for solar systems?
Solar MCCBs provide protection against DC fault currents, arc faults, and short circuits, ensuring safe operation of photovoltaic installations.

Q: What is a thermal-magnetic circuit breaker?
A thermal-magnetic breaker combines thermal protection for sustained overcurrent and magnetic protection for short circuits or sudden current spikes.

Why Buy Specialist MCCBs from RSP Supply

RSP Supply offers a curated selection of specialist molded case circuit breakers for generator, marine, and solar applications from trusted manufacturers such as Eaton. Customers rely on RSP Supply for knowledgeable technical support and dependable sourcing of circuit protection solutions designed to perform reliably in demanding electrical environments.