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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
QNBAL2015
QNBAL2015
Limited Stock
From
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Westinghouse
15
240
QNBAL2020
QNBAL2020
Limited Stock
From
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Cutler Hammer
20
240
QNBAL2025
QNBAL2025
Limited Stock
From
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Westinghouse
25
240
QNBAL2030
QNBAL2030
Limited Stock
From
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Westinghouse
30
240
QNBAL2035
QNBAL2035
Limited Stock
From
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Westinghouse
35
240
QNBAL2040
QNBAL2040
Limited Stock
From
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Westinghouse
40
240
QNBAL2050
QNBAL2050
Limited Stock
From
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Westinghouse
50
240
QNBAL2080
QNBAL2080
Limited Stock
From
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Westinghouse
80
240
QNBAL3010
QNBAL3010
Limited Stock
From
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Westinghouse
10
240
QNBAL3020
QNBAL3020
Limited Stock
From
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Westinghouse
20
240
QNBAL3030
QNBAL3030
Limited Stock
From
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Westinghouse
30
240
QNBAL3040
QNBAL3040
Limited Stock
From
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Westinghouse
40
240
QNBAL3050
QNBAL3050
Limited Stock
From
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Westinghouse
50
240
QNBAL3060
QNBAL3060
Limited Stock
From
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Westinghouse
60
240
QNBAL3070
QNBAL3070
Limited Stock
From
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Westinghouse
70
240
QNBAL3080
QNBAL3080
Limited Stock
From
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Westinghouse
80
240
QNBAL3090
QNBAL3090
Limited Stock
From
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Westinghouse
90
240
QNBAL3100
QNBAL3100
Limited Stock
From
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Westinghouse
100
240
QNBL1050
QNBL1050
Limited Stock
From
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Westinghouse
50
240
QNBL1060
QNBL1060
Limited Stock
From
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Westinghouse
60
240
QNBL1070
QNBL1070
Limited Stock
From
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Westinghouse
70
240
QNBL2005
QNBL2005
Limited Stock
From
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Westinghouse
5
240
QNBL2010
QNBL2010
Limited Stock
From
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Westinghouse
10
240
QNBL2020B
QNBL2020B
Limited Stock
From
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Westinghouse
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.