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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
BQ2H030
BQ2H030
Limited Stock
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Siemens
30
240
BQ2H03000S07
BQ2H03000S07
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Siemens
30
240
BQ2H03001
BQ2H03001
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Siemens
30
240
BQ2H030F
BQ2H030F
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Siemens
30
240
BQ2H030L
BQ2H030L
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Siemens
30
240
BQ2H030M
BQ2H030M
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Siemens
30
240
BQ2H030QL
BQ2H030QL
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Siemens
30
240
BQ2H030QX
BQ2H030QX
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Siemens
30
240
BQ2H030Y
BQ2H030Y
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Siemens
30
240
BQ2H035
BQ2H035
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Siemens
35
240
BQ2H040
BQ2H040
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Siemens
40
240
BQ2H04000S07
BQ2H04000S07
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Siemens
40
240
BQ2H04001
BQ2H04001
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Siemens
40
240
BQ2H040F
BQ2H040F
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Siemens
40
240
BQ2H040L
BQ2H040L
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Siemens
40
240
BQ2H040M
BQ2H040M
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Siemens
40
240
BQ2H040QX
BQ2H040QX
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Siemens
40
240
BQ2H040Y
BQ2H040Y
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Siemens
40
240
BQ2H045L
BQ2H045L
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Siemens
45
240
BQ2H050
BQ2H050
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Siemens
50
240
BQ2H05000S07
BQ2H05000S07
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Siemens
50
240
BQ2H05001
BQ2H05001
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From
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Siemens
50
240
BQ2H050F
BQ2H050F
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From
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Siemens
50
240
BQ2H050L
BQ2H050L
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Siemens
50
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.