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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
BQ1B020HL
BQ1B020HL
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Siemens
20
120
BQ1B020HM
BQ1B020HM
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Siemens
20
120
BQ1B020HQX
BQ1B020HQX
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Siemens
20
120
BQ1B03001
BQ1B03001
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Siemens
30
120
BQ1B030M
BQ1B030M
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Siemens
30
120
BQ1B030QLD
BQ1B030QLD
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Siemens
30
240
BQ1B030QX
BQ1B030QX
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Siemens
30
120
BQ1B030QXD
BQ1B030QXD
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Siemens
30
120
BQ2H015
BQ2H015
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Siemens
15
240
BQ2H01500S07
BQ2H01500S07
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Siemens
15
240
BQ2H01501
BQ2H01501
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Siemens
15
240
BQ2H015F
BQ2H015F
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Siemens
15
240
BQ2H015L
BQ2H015L
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Siemens
15
240
BQ2H015M
BQ2H015M
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Siemens
15
240
BQ2H015QX
BQ2H015QX
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Siemens
15
240
BQ2H015Y
BQ2H015Y
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Siemens
15
240
BQ2H02000S07
BQ2H02000S07
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Siemens
20
240
BQ2H02001
BQ2H02001
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Siemens
20
240
BQ2H020F
BQ2H020F
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Siemens
20
240
BQ2H020L
BQ2H020L
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From
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Siemens
20
240
BQ2H020M
BQ2H020M
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From
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Siemens
20
240
BQ2H020QL
BQ2H020QL
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From
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Siemens
20
240
BQ2H020QX
BQ2H020QX
Limited Stock
From
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Siemens
20
240
BQ2H020Y
BQ2H020Y
Limited Stock
From
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Siemens
20
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.