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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
135
135
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Federal Pacific
35
120
140
140
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American
40
120
CJJ436175
CJJ436175
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Federal Pioneer
175
600
CJL3250EF
CJL3250EF
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Federal Pioneer
250
600
NAGF220
NAGF220
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Federal Pioneer
20
240
NB231050
NB231050
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Federal Pioneer
50
240
NB232090
NB232090
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Federal Pioneer
90
240
NB232100
NB232100
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Federal Pioneer
100
240
NB3P90
NB3P90
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Federal Pioneer
90
240
NC1P15
NC1P15
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Federal Pacific
15
120
NC235
NC235
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Federal Pacific
35
240
NC30
NC30
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Federal Pacific
30
120
CK31200N-4P
CK31200N-4P
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Federal Pacific
1200
600
015FED
015FED
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Federal Pioneer
15
120
020FED
020FED
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Federal Pioneer
20
120
0230FED
0230FED
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Federal Pioneer
30
240
0240FED
0240FED
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Federal Pioneer
40
240
025FED
025FED
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Federal Pioneer
25
120
045
045
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Federal Pacific
45
120
050
050
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Federal Pioneer
50
120
120
120
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Federal Pacific
20
120
125
125
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Federal Pacific
25
120
15FED
15FED
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Federal Pioneer
15
120
NAGF1533
NAGF1533
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Federal Pioneer
15
120
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.