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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.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
Voltage
NEF433070
NEF433070
In Stock
From
$314.99
American
70
480
NFS4350
NFS4350
In Stock
From
$49.60
Federal Pacific
50
240
NFS4370
NFS4370
In Stock
From
$219.06
FPE
70
240
ICP631007
ICP631007
In Stock
From
$102.36
FPE
7
600
3B100LB
3B100LB
In Stock
From
$370.13
FPE
100
240
ICP631003
ICP631003
Limited Stock
From
Get Price
FPE
3
600
ICP631015
ICP631015
In Stock
From
$341.09
Federal Pacific
15
600
L3P15
L3P15
In Stock
From
$69.98
American
15
240
NFJ621150
NFJ621150
In Stock
From
$27.29
American
150
600
NFS4315
NFS4315
In Stock
From
$103.85
Federal Pacific
15
240
NFS4320
NFS4320
In Stock
From
$105.16
Federal Pacific
20
240
NFS4330
NFS4330
In Stock
From
$125.72
Federal Pacific
30
240
NFS4340
NFS4340
In Stock
From
$209.32
Federal Pacific
40
240
NB50
NB50
In Stock
From
$72.22
FPE
50
120
3P30X
3P30X
Limited Stock
From
Get Price
Federal Pacific
30
240
3P25X
3P25X
Limited Stock
From
Get Price
FPE
25
240
3P35X
3P35X
Limited Stock
From
Get Price
FPE
35
240
3P50X
3P50X
Limited Stock
From
Get Price
FPE
50
240
3P70X
3P70X
Limited Stock
From
Get Price
Federal Pacific
70
240
NFJ431150
NFJ431150
Limited Stock
From
Get Price
FPE
150
480
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.