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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
SE3C035C
SE3C035C
Limited Stock
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Sylvania
35
240
SE3C045
SE3C045
Limited Stock
From
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Sylvania
45
240
SE3C050
SE3C050
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Sylvania
50
240
SE3C060
SE3C060
Limited Stock
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Challenger
60
240
SE3C070
SE3C070
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Sylvania
70
240
SE3C080
SE3C080
Limited Stock
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Challenger
80
240
SE3C090
SE3C090
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Challenger
90
240
SE3C100
SE3C100
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Sylvania
100
240
SE3C125
SE3C125
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Challenger
125
240
SE3C150
SE3C150
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Sylvania
150
240
SEH1C030
SEH1C030
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Challenger
30
277
SKM3C1200
SKM3C1200
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Sylvania
1200
600
CLB2125
CLB2125
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Sylvania
125
240
HAGF15US
HAGF15US
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Zinsco
15
120
HAGF20US
HAGF20US
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Sylvania
20
120
HAGF25US
HAGF25US
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Sylvania
25
120
HAGF30US
HAGF30US
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Challenger
30
120
HSEH-3-C-150
HSEH-3-C-150
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From
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Challenger
150
480
QFB125-3
QFB125-3
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From
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Zinsco
125
240
QFB125-3P
QFB125-3P
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Challenger
125
240
QFB150-3
QFB150-3
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From
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Sylvania
150
240
QFB150-3P
QFB150-3P
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From
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Sylvania
150
240
QFB175-3
QFB175-3
Limited Stock
From
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Sylvania
175
240
QFB175-3P
QFB175-3P
Limited Stock
From
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Zinsco
175
240
Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.


Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.