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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
HKL3400L
HKL3400L
Limited Stock
From
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Westinghouse
400
600
HLM31200
HLM31200
Limited Stock
From
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Cutler Hammer
1200
600
HLM31200F
HLM31200F
Limited Stock
From
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Cutler Hammer
1200
600
HLM3400
HLM3400
Limited Stock
From
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Westinghouse
400
600
HLM3700
HLM3700
Limited Stock
From
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Westinghouse
700
600
HLM3900
HLM3900
Limited Stock
From
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Westinghouse
900
600
HNW4800WK
HNW4800WK
Limited Stock
From
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Eaton
800
690
JKL3090
JKL3090
Limited Stock
From
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Westinghouse
90
600
JKL3200STY
JKL3200STY
Limited Stock
From
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Westinghouse
200
600
JKL3225
JKL3225
Limited Stock
From
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Westinghouse
225
600
JKL3225STY
JKL3225STY
Limited Stock
From
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Westinghouse
225
600
JKL3250STY
JKL3250STY
Limited Stock
From
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Westinghouse
250
600
K3175F
K3175F
Limited Stock
From
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Westinghouse
175
600
K3300
K3300
Limited Stock
From
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Westinghouse
300
600
K3400
K3400
Limited Stock
From
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Westinghouse
400
600
K3400F
K3400F
Limited Stock
From
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Westinghouse
400
600
KL2325T
KL2325T
Limited Stock
From
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Westinghouse
325
600
KL3400N
KL3400N
Limited Stock
From
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Westinghouse
400
600
L2500
L2500
Limited Stock
From
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Westinghouse
500
600
L2600F
L2600F
Limited Stock
From
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Westinghouse
600
600
LADC3400
LADC3400
Limited Stock
From
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Westinghouse
400
500
LADC3400W
LADC3400W
Limited Stock
From
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Westinghouse
400
500
LADC3500W
LADC3500W
Limited Stock
From
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Westinghouse
500
500
LADC3600W
LADC3600W
Limited Stock
From
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Westinghouse
600
500
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.