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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
RC3825
RC3825
Limited Stock
From
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Zinsco
25
240
UBIZ5050
UBIZ5050
Limited Stock
From
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Zinsco
50
240
QFP2T200
QFP2T200
Limited Stock
From
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Challenger
200
240
HAGF15US
HAGF15US
Limited Stock
From
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Zinsco
15
120
HAGF20US
HAGF20US
Limited Stock
From
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Sylvania
20
120
HAGF25US
HAGF25US
Limited Stock
From
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Sylvania
25
120
HAGF30US
HAGF30US
Limited Stock
From
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Challenger
30
120
HQGF15US
HQGF15US
Limited Stock
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Zinsco
15
120
HQGF20US
HQGF20US
Limited Stock
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Zinsco
20
120
HQGF30US
HQGF30US
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Zinsco
30
120
QCAL015
QCAL015
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Zinsco
15
240
QCAL020
QCAL020
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Zinsco
20
240
QCAL030
QCAL030
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Zinsco
30
240
QCAL040
QCAL040
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Zinsco
40
240
QCAL050
QCAL050
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Zinsco
50
240
QFB125-3
QFB125-3
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From
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Zinsco
125
240
QFB125-3P
QFB125-3P
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From
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Challenger
125
240
QFB150-3
QFB150-3
Limited Stock
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
QFB200-3
QFB200-3
Limited Stock
From
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Challenger
200
240
QFB200-3P
QFB200-3P
Limited Stock
From
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Sylvania
200
240
QFB225-3
QFB225-3
Limited Stock
From
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Zinsco
225
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.