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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
LD3600VY
LD3600VY
Limited Stock
From
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Eaton
600
600
LDB3300C
LDB3300C
Limited Stock
From
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Eaton
300
600
LDB3350C
LDB3350C
Limited Stock
From
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Eaton
350
600
LDB3400C
LDB3400C
Limited Stock
From
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Cutler Hammer
400
600
LDB3450C
LDB3450C
Limited Stock
From
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Eaton
450
600
LDB3500C
LDB3500C
Limited Stock
From
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Westinghouse
500
600
LDB3600C
LDB3600C
Limited Stock
From
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Cutler Hammer
600
600
LDC3300C
LDC3300C
Limited Stock
From
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Cutler Hammer
300
600
LDC3300V
LDC3300V
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From
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Westinghouse
300
600
LDC3350C
LDC3350C
Limited Stock
From
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Cutler Hammer
350
600
LDC3350V
LDC3350V
Limited Stock
From
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Cutler Hammer
350
600
LDC3400C
LDC3400C
Limited Stock
From
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Westinghouse
400
600
LDC3400T57W
LDC3400T57W
Limited Stock
From
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Westinghouse
400
600
LDC3400V
LDC3400V
Limited Stock
From
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Eaton
400
600
LDC3450C
LDC3450C
Limited Stock
From
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Cutler Hammer
450
600
LDC3450V
LDC3450V
Limited Stock
From
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Eaton
450
600
LDC3500C
LDC3500C
Limited Stock
From
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Westinghouse
500
600
LDC3500V
LDC3500V
Limited Stock
From
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Eaton
500
600
LDCB3600FT32W
LDCB3600FT32W
Limited Stock
From
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Westinghouse
600
600
LDCB3600FT36W
LDCB3600FT36W
Limited Stock
From
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Eaton
600
600
CHFEP130
CHFEP130
Limited Stock
From
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Eaton
30
120
DK3100
DK3100
Limited Stock
From
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Westinghouse
100
240
E2MM3800W
E2MM3800W
Limited Stock
From
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Westinghouse
800
1000
FWC3040L
FWC3040L
Limited Stock
From
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Westinghouse
40
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.