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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
QP120AF
QP120AF
Limited Stock
From
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ITE
20
240
QP150
QP150
Limited Stock
From
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Siemens
50
240
QP160
QP160
Limited Stock
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Siemens
60
240
QP1B010
QP1B010
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ITE
10
240
QP1B060
QP1B060
Limited Stock
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ITE
60
240
QP2-B100-B
QP2-B100-B
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From
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ITE
100
240
QP2-B200
QP2-B200
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ITE
200
240
QP2B025
QP2B025
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ITE
25
240
QP2B035
QP2B035
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ITE
35
240
QP2B150
QP2B150
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ITE
150
240
QP2B175
QP2B175
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ITE
175
240
QP3-B025
QP3-B025
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From
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ITE
25
240
QP3-B035
QP3-B035
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From
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ITE
35
240
QP3-B15000S01
QP3-B15000S01
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ITE
150
240
QP3B080
QP3B080
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ITE
80
240
L3B150
L3B150
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Siemens
150
600
L3B175
L3B175
Limited Stock
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Siemens
175
600
L3B200
L3B200
Limited Stock
From
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ITE
200
600
L3B250
L3B250
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From
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Siemens
250
600
L3BF600
L3BF600
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Siemens
600
600
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.