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 842 items
Normally In Stock
Eaton NQB-A103 Series - 3P, 100 Amp, 500 VAC
Free U.S Ground shipping
$7598.63
$6332.19
Normally In Stock
Eaton PDG12C0015TFFNNNNNM1 Complete Breaker - 2P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0015VFFNNNNNM1 Complete Breaker - 2P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0020TFFNNNNNM1 Complete Breaker - 2P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0020VFFNNNNNM1 Complete Breaker - 2P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0025TFFNNNNNM1 Complete Breaker - 2P, 25 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0025VFFNNNNNM1 Complete Breaker - 2P, 25 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0030TFFNNNNNM1 Complete Breaker - 2P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0030VFFNNNNNM1 Complete Breaker - 2P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG12C0035TFFNNNNNM1 Complete Breaker - 2P, 35 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$310.49
$258.74
Normally In Stock
Eaton PDG13G0015TFFNNNNNM1 Complete Breaker - 3P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0015VFFNNNNNM1 Complete Breaker - 3P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0020TFFNNNNNM1 Complete Breaker - 3P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0020VFFNNNNNM1 Complete Breaker - 3P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0025TFFNNNNNM1 Complete Breaker - 3P, 25 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0025VFFNNNNNM1 Complete Breaker - 3P, 25 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0030TFFNNNNNM1 Complete Breaker - 3P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0030VFFNNNNNM1 Complete Breaker - 3P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0035TFFNNNNNM1 Complete Breaker - 3P, 35 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0035VFFNNNNNM1 Complete Breaker - 3P, 35 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0040TFFNNNNNM1 Complete Breaker - 3P, 40 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0040VFFNNNNNM1 Complete Breaker - 3P, 40 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0045TFFNNNNNM1 Complete Breaker - 3P, 45 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0045VFFNNNNNM1 Complete Breaker - 3P, 45 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0050TFFNNNNNM1 Complete Breaker - 3P, 50 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0050VFFNNNNNM1 Complete Breaker - 3P, 50 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0060TFFNNNNNM1 Complete Breaker - 3P, 60 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0060VFFNNNNNM1 Complete Breaker - 3P, 60 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$517.46
$431.22
Normally In Stock
Eaton PDG13G0070TFFNNNNNM1 Complete Breaker - 3P, 70 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0070VFFNNNNNM1 Complete Breaker - 3P, 70 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0080TFFNNNNNM1 Complete Breaker - 3P, 80 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0080VFFNNNNNM1 Complete Breaker - 3P, 80 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0090TFFNNNNNM1 Complete Breaker - 3P, 90 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0090VFFNNNNNM1 Complete Breaker - 3P, 90 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0100TFFNNNNNM1 Complete Breaker - 3P, 100 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0100VFFNNNNNM1 Complete Breaker - 3P, 100 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$586.48
$488.73
Normally In Stock
Eaton PDG13G0110TFFNNNNNM1 Complete Breaker - 3P, 110 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$862.45
$718.71
Normally In Stock
Eaton PDG13G0110VFFNNNNNM1 Complete Breaker - 3P, 110 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$862.45
$718.71
Normally In Stock
Eaton PDG13G0125TFFNNNNNM1 Complete Breaker - 3P, 125 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$862.45
$718.71
Normally In Stock
Eaton PDG13G0125VFFNNNNNM1 Complete Breaker - 3P, 125 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$862.45
$718.71
Normally In Stock
Eaton PDG21G0015TFFLNNNNM1 Complete Breaker - 1P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$419.69
$349.74
Normally In Stock
Eaton PDG21G0020TFFLNNNNM1 Complete Breaker - 1P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$419.69
$349.74
Normally In Stock
Eaton PDG22G0015TFFJNNNNM1 Complete Breaker - 2P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$618.25
$515.21
Normally In Stock
Eaton PDG22M0015TFFLNNNNM1 Complete Breaker - 2P, 15 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$905.64
$754.70
Normally In Stock
Eaton PDG22M0020TFFLNNNNM1 Complete Breaker - 2P, 20 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$905.64
$754.70
Normally In Stock
Eaton PDG22M0030TFFLNNNNM1 Complete Breaker - 2P, 30 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$905.64
$754.70
Normally In Stock
Eaton PDG22M0040TFFLNNNNM1 Complete Breaker - 2P, 40 Amp, 600 VAC Max Volt
Free U.S Ground shipping
$905.64
$754.70

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.