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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
NP031120
NP031120
In Stock
From
$0.02
Federal Pacific
-
-
FPE5300-B2*-G1-1.0
FPE5300-B2*-G1-1.0
In Stock
From
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Federal Pacific
-
-
HEJ223150
HEJ223150
In Stock
From
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Federal Pacific
-
-
NA310
NA310
In Stock
From
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Federal Pacific
-
-
NBH2125
NBH2125
In Stock
From
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Federal Pacific
-
-
NM6311000R
NM6311000R
In Stock
From
$0.02
Federal Pacific
-
-
NM63800
NM63800
In Stock
From
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Federal Pacific
-
-
CK31200E
CK31200E
Limited Stock
From
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Federal Pioneer
1200
600
CK31200EE
CK31200EE
Limited Stock
From
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Federal Pioneer
1200
600
CK31200N
CK31200N
Limited Stock
From
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Federal Pioneer
1200
600
CK31200NN
CK31200NN
Limited Stock
From
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Federal Horizon
1200
600
CK3800N
CK3800N
Limited Stock
From
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Federal Horizon
800
600
CK3800NN
CK3800NN
Limited Stock
From
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Federal Horizon
800
600
NEF427125
NEF427125
Limited Stock
From
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Federal Pacific
125
480
NEF433080
NEF433080
Limited Stock
From
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Federal Pacific
80
480
NEJ233100
NEJ233100
Limited Stock
From
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Federal Pacific
100
240
NM631600R
NM631600R
Limited Stock
From
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Federal Pacific
600
600
135
135
Limited Stock
From
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Federal Pacific
35
120
HF631060
HF631060
Limited Stock
From
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Federal Pacific
60
600
NB231060
NB231060
Limited Stock
From
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American
60
240
NB231080
NB231080
Limited Stock
From
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Federal Pacific
80
240
NB350
NB350
Limited Stock
From
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Federal Pacific
50
240
NB350H
NB350H
Limited Stock
From
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Federal Pacific
50
240
NB360
NB360
Limited Stock
From
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American
60
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.