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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
AM2-A3-A-0050-O3E
AM2-A3-A-0050-O3E
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Heinemann
-
-
BA2035
BA2035
Limited Stock
From
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Westinghouse
-
240
BQ2B03000S0
BQ2B03000S0
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From
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Siemens
-
240
BQ2B040LD
BQ2B040LD
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Siemens
-
240
BQ2B050HLD
BQ2B050HLD
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Siemens
-
240
BQ2B060LD
BQ2B060LD
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Siemens
-
240
CHMP150U4C
CHMP150U4C
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Westinghouse
-
-
F3020P
F3020P
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Westinghouse
-
-
F3040P
F3040P
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Westinghouse
-
-
FDM3070
FDM3070
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Cutler Hammer
-
-
LD3300F
LD3300F
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Eaton
-
-
LD3450F
LD3450F
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Eaton
-
-
PLU701K-K20
PLU701K-K20
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ABB
-
-
TEYALEF0ABXXXXXX
TEYALEF0ABXXXXXX
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ABB
-
-
XT4HU32251YJ000XXX
XT4HU32251YJ000XXX
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225
600
XT4LU32501Y8000XXX
XT4LU32501Y8000XXX
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250
600
XT6NU3800BYU000XXX
XT6NU3800BYU000XXX
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800
600
3RV2111-1DA10
3RV2111-1DA10
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Siemens
-
-
140U-16C3-C15M
140U-16C3-C15M
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Allen-Bradley
-
-
1SDA054323R1
1SDA054323R1
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ABB
-
-
3RV23214EC10
3RV23214EC10
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Siemens
-
-
3RV23324PC10
3RV23324PC10
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Siemens
-
-
3RV2946-2B
3RV2946-2B
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Siemens
-
-
3VA52101BB310AA0
3VA52101BB310AA0
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Siemens
-
-
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.