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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
3RV1011-1CA
3RV1011-1CA
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Siemens
-
-
3VL9000-8AQ60-0AA0
3VL9000-8AQ60-0AA0
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Siemens
-
-
3VL9000-8AQ70-0AA0
3VL9000-8AQ70-0AA0
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Siemens
-
-
3VL9206-6AB30-0AA0
3VL9206-6AB30-0AA0
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Siemens
-
-
3VL9206-7DC30-0AA0
3VL9206-7DC30-0AA0
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Siemens
-
-
5SX22D4
5SX22D4
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Siemens
4
400
A2A250TW
A2A250TW
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ABB
250
240
A3040CTD
A3040CTD
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Challenger
-
-
A9C69240
A9C69240
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Schneider Electric
-
-
A9C69250
A9C69250
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Schneider Electric
-
-
A9C69440
A9C69440
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Schneider Electric
-
-
AM2-A3-A-0010-03E
AM2-A3-A-0010-03E
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Heinemann
-
-
BQ2B040X
BQ2B040X
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Siemens
-
240
BQ2B050X
BQ2B050X
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Siemens
-
240
BQ2B1000S01
BQ2B1000S01
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Siemens
-
240
CHB3025
CHB3025
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Eaton
25
240
FAL3610018M-1021
FAL3610018M-1021
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Square D
-
-
HFDDC2100K
HFDDC2100K
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Eaton
100
600
HSEH1C030
HSEH1C030
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Challenger
-
480
HSEHIC020
HSEHIC020
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Challenger
-
480
LB115-S
LB115-S
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Leviton
-
-
LB120-AS
LB120-AS
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Leviton
-
-
LHL3640030D
LHL3640030D
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Square D
400
600
LHL3640030DC-1652
LHL3640030DC-1652
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Square D
400
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.