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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
BQ2B110L
BQ2B110L
Limited Stock
From
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Siemens
110
240
HFK3T250L
HFK3T250L
Limited Stock
From
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Siemens
250
600
B212500S01
B212500S01
Limited Stock
From
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Siemens
125
240
B310000S07
B310000S07
Limited Stock
From
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Siemens
100
240
BQD310000S01
BQD310000S01
Limited Stock
From
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Siemens
100
480
BQD32000S01
BQD32000S01
Limited Stock
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Siemens
20
480
BQD32500S01
BQD32500S01
Limited Stock
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Siemens
25
480
BQD33500S01
BQD33500S01
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Siemens
35
480
BQD34500S01
BQD34500S01
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Siemens
45
480
BQD35000S01
BQD35000S01
Limited Stock
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Siemens
50
480
BQD37000S01
BQD37000S01
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Siemens
70
480
BQD38000S01
BQD38000S01
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Siemens
80
480
BQD39000S01
BQD39000S01
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Siemens
90
480
HED41B040L
HED41B040L
Limited Stock
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Siemens
40
277
HHFXD63B070
HHFXD63B070
Limited Stock
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Siemens
70
600
HHFXD63B090
HHFXD63B090
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From
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Siemens
90
600
HHFXD63B110
HHFXD63B110
Limited Stock
From
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Siemens
110
600
HHFXD63B175
HHFXD63B175
Limited Stock
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Siemens
175
600
QRH22B100L
QRH22B100L
Limited Stock
From
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Siemens
100
240
Q310000S07
Q310000S07
Limited Stock
From
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Siemens
100
240
Q335H
Q335H
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Siemens
35
240
BE250H
BE250H
Limited Stock
From
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Siemens
50
240
BF220AH
BF220AH
Limited Stock
From
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Siemens
20
240
BQ2B015H00S01
BQ2B015H00S01
Limited Stock
From
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Siemens
15
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.