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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
25221
25221
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Merlin Gerin
40
440
25222
25222
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Merlin Gerin
50
440
25223
25223
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Merlin Gerin
63
440
30810
30810
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Schneider Electric
160
690
30811
30811
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Schneider Electric
100
690
30813
30813
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Schneider Electric
40
690
30821
30821
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Schneider Electric
100
690
30823
30823
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Schneider Electric
40
690
31101
31101
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Square D
100
750
31103
31103
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Square D
200
750
31111
31111
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Merlin Gerin
400
750
31119
31119
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Schneider Electric
250
600
31136
31136
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Square D
400
600
31161
31161
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Schneider Electric
100
690
31162
31162
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Square D
200
690
31166
31166
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Schneider Electric
250
690
31167
31167
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Schneider Electric
250
690
31168
31168
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Square D
320
690
31169
31169
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Square D
320
690
31170
31170
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Schneider Electric
400
690
31171
31171
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Schneider Electric
400
690
31174
31174
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Square D
630
690
31180
31180
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Schneider Electric
100
690
31182
31182
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Square D
200
690
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.