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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
B1N1D40R
B1N1D40R
Limited Stock
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Noark Electric
40
240
B1N1D4R
B1N1D4R
Limited Stock
From
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Noark Electric
4
240
B1N1D50
B1N1D50
Limited Stock
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Noark Electric
50
240
B1N1D5R
B1N1D5R
Limited Stock
From
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Noark Electric
5
240
B1N1D60
B1N1D60
Limited Stock
From
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Noark Electric
60
240
B1N1D63
B1N1D63
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Noark Electric
63
240
B1N1D6R
B1N1D6R
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From
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Noark Electric
6
240
B1N1D8R
B1N1D8R
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From
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Noark Electric
8
240
B1N2B0.5
B1N2B0.5
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Noark Electric
0.5
240
B1N2B0.5R
B1N2B0.5R
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Noark Electric
0.5
240
B1N2B1
B1N2B1
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Noark Electric
1
240
B1N2B1.6
B1N2B1.6
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Noark Electric
1.6
240
B1N2B1.6R
B1N2B1.6R
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Noark Electric
1.6
240
B1N2B10
B1N2B10
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Noark Electric
10
240
B1N2B10R
B1N2B10R
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Noark Electric
10
240
B1N2B13
B1N2B13
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Noark Electric
13
240
B1N2B13R
B1N2B13R
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Noark Electric
13
240
B1N2B15
B1N2B15
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Noark Electric
15
240
B1N2B15R
B1N2B15R
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Noark Electric
15
240
B1N2B16
B1N2B16
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Noark Electric
16
240
B1N2B16R
B1N2B16R
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Noark Electric
16
240
B1N2B1R
B1N2B1R
Limited Stock
From
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Noark Electric
1
240
B1N2B2
B1N2B2
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Noark Electric
2
240
B1N2B20
B1N2B20
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Noark Electric
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.