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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
CJD63M250L
CJD63M250L
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Siemens
250
600
CJD63M300
CJD63M300
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Siemens
300
600
CJD63M300L
CJD63M300L
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Siemens
300
600
CJD63M350
CJD63M350
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Siemens
350
600
CJD63M350L
CJD63M350L
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Siemens
350
600
CJD63M400
CJD63M400
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Siemens
400
600
CJD63M400L
CJD63M400L
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Siemens
400
600
CJD63S400AL
CJD63S400AL
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Siemens
400
600
CLD63H600
CLD63H600
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Siemens
600
600
CLD63H600L
CLD63H600L
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Siemens
600
600
CLD63L600
CLD63L600
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Siemens
600
600
CLD63L600L
CLD63L600L
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Siemens
600
600
CLD63S600A
CLD63S600A
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Siemens
600
600
CLD63S600AL
CLD63S600AL
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Siemens
600
600
CMD62A800
CMD62A800
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Siemens
800
600
CMD62A800L
CMD62A800L
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Siemens
800
600
CMD62H800
CMD62H800
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Siemens
800
600
CMD62H800L
CMD62H800L
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Siemens
800
600
CMD62L800
CMD62L800
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Siemens
800
600
CMD62L800L
CMD62L800L
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Siemens
800
600
CMD63A800L
CMD63A800L
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Siemens
800
600
CMD63B500H
CMD63B500H
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Siemens
500
600
CMD63B500HL
CMD63B500HL
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Siemens
500
600
CMD63B600HL
CMD63B600HL
Limited Stock
From
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Siemens
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.