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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
BQ2B020L
BQ2B020L
Limited Stock
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Siemens
20
240
BQ2B025L
BQ2B025L
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Siemens
25
240
BQ2B030H00S01
BQ2B030H00S01
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Siemens
30
240
BQ2B035H00S01
BQ2B035H00S01
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Siemens
35
240
BQ2B035L
BQ2B035L
Limited Stock
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Siemens
35
240
BQ2B045L
BQ2B045L
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Siemens
45
240
BQ2B050H00S01
BQ2B050H00S01
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Siemens
50
240
BQ2B070H00S01
BQ2B070H00S01
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From
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Siemens
70
240
BQ2B070L
BQ2B070L
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From
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Siemens
70
240
BQ2B080H00S01
BQ2B080H00S01
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Siemens
80
240
BQ2B080L
BQ2B080L
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Siemens
80
240
BQ2B100H00S01
BQ2B100H00S01
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Siemens
100
240
BQ2B125H00S01
BQ2B125H00S01
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Siemens
125
240
ED61B080L
ED61B080L
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Siemens
80
600
HNX3B800
HNX3B800
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Siemens
800
600
NGG3B070
NGG3B070
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Siemens
70
600
B15500S01
B15500S01
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Siemens
55
240
B155H00S01
B155H00S01
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Siemens
55
240
B280HH00S01
B280HH00S01
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Siemens
80
240
BQ1B01500S07
BQ1B01500S07
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From
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Siemens
15
120
BQ1B015H00S01
BQ1B015H00S01
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From
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Siemens
15
120
BQ1B02001
BQ1B02001
Limited Stock
From
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Siemens
20
120
BQ1B020F
BQ1B020F
Limited Stock
From
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Siemens
20
120
BQ1B020HY
BQ1B020HY
Limited Stock
From
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Siemens
20
120
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.