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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
LG3600WS88
LG3600WS88
Limited Stock
From
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Cutler Hammer
600
600
LG3600WS89
LG3600WS89
Limited Stock
From
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Cutler Hammer
600
600
LG3600WS90
LG3600WS90
Limited Stock
From
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Cutler Hammer
600
600
MA36001042
MA36001042
Limited Stock
From
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Westinghouse
600
600
NB2300P
NB2300P
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From
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Westinghouse
300
600
NB2350P
NB2350P
Limited Stock
From
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Westinghouse
350
600
NB2400P
NB2400P
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Westinghouse
400
600
NB2500P
NB2500P
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From
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Westinghouse
500
600
NB2600P
NB2600P
Limited Stock
From
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Westinghouse
600
600
NB2700P
NB2700P
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Westinghouse
700
600
NB2800P
NB2800P
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From
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Westinghouse
800
600
PB32000AL
PB32000AL
Limited Stock
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Westinghouse
2000
600
PB32000K
PB32000K
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Westinghouse
2000
600
PB32000V
PB32000V
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Cutler Hammer
2000
600
PB32000WK
PB32000WK
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Westinghouse
2000
600
RD320TGW
RD320TGW
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From
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Eaton
2000
600
RDC316TGW
RDC316TGW
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From
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Westinghouse
1600
600
RDC320TGW
RDC320TGW
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Eaton
2000
600
BD4040
BD4040
Limited Stock
From
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Cutler Hammer
40
120
EB1015L
EB1015L
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From
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Westinghouse
15
120
EB1025L
EB1025L
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From
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Westinghouse
25
120
EB1030L
EB1030L
Limited Stock
From
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Westinghouse
30
120
EB1035L
EB1035L
Limited Stock
From
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Cutler Hammer
35
120
EB1040L
EB1040L
Limited Stock
From
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Westinghouse
40
120
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.