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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
NM032250
NM032250
In Stock
From
$2,234.60
Federal Pacific
250
600
NM032300
NM032300
In Stock
From
$1,786.69
Federal Pacific
300
600
NM032350
NM032350
In Stock
From
Get Price
Federal Pacific
350
600
NM032500
NM032500
In Stock
From
$2,125.53
Federal Pacific
500
600
NM032700
NM032700
In Stock
From
$2,779.16
Federal Pacific
700
600
NM032800
NM032800
In Stock
From
$4,198.02
Federal Pacific
800
600
NM032800NA
NM032800NA
In Stock
From
$4,198.02
Federal Pacific
800
600
NM622150
NM622150
In Stock
From
$2,323.20
Federal Pacific
150
600
NM622175
NM622175
In Stock
From
$2,342.56
Federal Pacific
175
600
NM622200
NM622200
In Stock
From
$2,202.05
Federal Pacific
200
600
NM622225
NM622225
In Stock
From
$2,342.56
Federal Pacific
225
600
NM622250
NM622250
In Stock
From
$2,328.59
Federal Pacific
250
600
NM622300
NM622300
In Stock
From
$2,342.56
Federal Pacific
300
600
NM622350
NM622350
In Stock
From
$2,323.20
Federal Pacific
350
600
NM622400
NM622400
In Stock
From
$1,484.03
Federal Pacific
400
600
NM622450
NM622450
In Stock
From
$2,323.20
Federal Pacific
450
600
NM622500
NM622500
In Stock
From
$2,342.56
Federal Pacific
500
600
NM622600
NM622600
In Stock
From
$1,704.93
Federal Pacific
600
600
NM622700
NM622700
In Stock
From
$2,342.56
Federal Pacific
700
600
NM622800
NM622800
In Stock
From
$1,971.74
Federal Pacific
800
600
NM62280NA
NM62280NA
In Stock
From
$1,054.61
Federal Pacific
800
600
NM624600
NM624600
In Stock
From
$2,377.01
Federal Pacific
600
600
NM631500
NM631500
In Stock
From
$573.60
Federal Pacific
500
600
NM631800
NM631800
In Stock
From
$2,522.32
Federal Pacific
800
600
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.