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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
HM2B400
HM2B400
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Siemens
400
600
HM2B450
HM2B450
Limited Stock
From
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ITE
450
600
HM2B500
HM2B500
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From
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ITE
500
600
HM2B600
HM2B600
Limited Stock
From
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Siemens
600
600
HM2B700
HM2B700
Limited Stock
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ITE
700
600
HM2B800
HM2B800
Limited Stock
From
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ITE
800
600
HM3B1000
HM3B1000
Limited Stock
From
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Siemens
1000
600
HM3B1200
HM3B1200
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ITE
1200
600
HM3B450
HM3B450
Limited Stock
From
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Siemens
450
600
HMCP0250D0
HMCP0250D0
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From
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Eaton
250
-
HOMT2015
HOMT2015
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From
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Square D
20
120
HQC15
HQC15
Limited Stock
From
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Cutler Hammer
15
240
HQC20
HQC20
Limited Stock
From
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Cutler Hammer
20
240
HQC2100
HQC2100
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Cutler Hammer
100
240
HQC30
HQC30
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Cutler Hammer
30
240
HQC3035
HQC3035
Limited Stock
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Cutler Hammer
35
240
HQC3060
HQC3060
Limited Stock
From
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Westinghouse
60
240
HQC3070
HQC3070
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From
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Cutler Hammer
70
240
HQC3080
HQC3080
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From
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Westinghouse
80
240
HQC3090
HQC3090
Limited Stock
From
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Cutler Hammer
90
240
HQC3100
HQC3100
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From
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Westinghouse
100
240
HQC40
HQC40
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From
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Cutler Hammer
40
240
HQC50
HQC50
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From
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Cutler Hammer
50
240
HQCL2010
HQCL2010
Limited Stock
From
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Cutler Hammer
10
240
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.