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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
HKD2400K
HKD2400K
Limited Stock
From
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Cutler Hammer
400
600
HKD3400C
HKD3400C
Limited Stock
From
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Eaton
400
600
HKD4400F
HKD4400F
Limited Stock
From
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Eaton
400
600
HKDDC3225W
HKDDC3225W
Limited Stock
From
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Cutler Hammer
225
600
HKDDC3250
HKDDC3250
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From
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Westinghouse
250
600
HKDDC3250W
HKDDC3250W
Limited Stock
From
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Cutler Hammer
250
600
HKDDC3400K
HKDDC3400K
Limited Stock
From
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Cutler Hammer
400
600
HKDDC3400KW
HKDDC3400KW
Limited Stock
From
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Westinghouse
400
600
HKW3200
HKW3200
Limited Stock
From
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Cutler Hammer
200
690
HKW3250
HKW3250
Limited Stock
From
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Westinghouse
250
690
HKW3315
HKW3315
Limited Stock
From
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Eaton
315
690
HKW3400KW
HKW3400KW
Limited Stock
From
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Eaton
400
690
HKW4200
HKW4200
Limited Stock
From
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Cutler Hammer
200
690
HKW4400
HKW4400
Limited Stock
From
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Cutler Hammer
400
690
HKW4400F
HKW4400F
Limited Stock
From
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Eaton
400
690
HLD2450
HLD2450
Limited Stock
From
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Westinghouse
450
600
HLD2600F
HLD2600F
Limited Stock
From
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Westinghouse
600
600
HLD2600WK
HLD2600WK
Limited Stock
From
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Eaton
600
600
HLD4600
HLD4600
Limited Stock
From
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Westinghouse
600
600
HLD4600F
HLD4600F
Limited Stock
From
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Eaton
600
600
HLD4600WK
HLD4600WK
Limited Stock
From
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Westinghouse
600
600
HLDB3600FT35W
HLDB3600FT35W
Limited Stock
From
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Eaton
600
600
HLDDC3500
HLDDC3500
Limited Stock
From
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Eaton
500
600
HLDDC3600K
HLDDC3600K
Limited Stock
From
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Cutler Hammer
600
600
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.