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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
B1N2B20R
B1N2B20R
Limited Stock
From
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Noark Electric
20
240
B1N2B25
B1N2B25
Limited Stock
From
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Noark Electric
25
240
B1N2B25R
B1N2B25R
Limited Stock
From
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Noark Electric
25
240
B1N2B3
B1N2B3
Limited Stock
From
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Noark Electric
3
240
B1N2B30
B1N2B30
Limited Stock
From
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Noark Electric
30
240
B1N2B30R
B1N2B30R
Limited Stock
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Noark Electric
30
240
B1N2B32
B1N2B32
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Noark Electric
32
240
B1N2B32R
B1N2B32R
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From
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Noark Electric
32
240
B1N2B35R
B1N2B35R
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Noark Electric
35
240
B1N2B3R
B1N2B3R
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From
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Noark Electric
3
240
B1N2B4
B1N2B4
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Noark Electric
4
240
B1N2B40
B1N2B40
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Noark Electric
40
240
B1N2B40R
B1N2B40R
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From
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Noark Electric
40
240
B1N2B4R
B1N2B4R
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From
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Noark Electric
4
240
B1N2B5
B1N2B5
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Noark Electric
5
240
B1N2B50
B1N2B50
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From
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Noark Electric
50
240
B1N2B5R
B1N2B5R
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Noark Electric
5
240
B1N2B6
B1N2B6
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Noark Electric
6
240
B1N2B60
B1N2B60
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Noark Electric
60
240
B1N2B63
B1N2B63
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Noark Electric
63
240
B1N2B6R
B1N2B6R
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From
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Noark Electric
6
240
B1N2B8
B1N2B8
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From
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Noark Electric
8
240
B1N2B8R
B1N2B8R
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From
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Noark Electric
8
240
B1N2C0.5
B1N2C0.5
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Noark Electric
0.5
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.