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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
NJJ221200
NJJ221200
In Stock
From
$1,205.28
Federal Pacific
200
240
NJJ221225
NJJ221225
In Stock
From
$1,747.49
Federal Pacific
225
240
NJJ221250
NJJ221250
In Stock
From
$1,205.28
Federal Pacific
250
240
NJJ221300
NJJ221300
In Stock
From
$1,814.40
Federal Pacific
300
240
NJJ221350
NJJ221350
In Stock
From
$1,400.41
Federal Pacific
350
240
NJJ221400
NJJ221400
In Stock
From
$1,403.66
Federal Pacific
400
240
NJJ221400NA
NJJ221400NA
In Stock
From
$1,396.74
Federal Pacific
400
240
NJJ221500
NJJ221500
In Stock
From
$1,406.42
Federal Pacific
500
240
NJJ221500NA
NJJ221500NA
In Stock
From
$661.34
Federal Pacific
500
240
NJJ221600
NJJ221600
In Stock
From
$1,164.04
Federal Pacific
600
240
NJJ221600NA
NJJ221600NA
In Stock
From
$656.58
Federal Pacific
600
240
NJJ232100
NJJ232100
In Stock
From
$615.55
Federal Pacific
100
240
NJJ232125
NJJ232125
In Stock
From
$431.18
Federal Pacific
125
240
NJJ232150
NJJ232150
In Stock
From
$615.04
Federal Pacific
150
240
NJJ232175
NJJ232175
In Stock
From
$607.95
Federal Pacific
175
240
NJJ232200
NJJ232200
In Stock
From
$1,297.84
Federal Pacific
200
240
NJJ232225
NJJ232225
In Stock
From
$1,357.84
Federal Pacific
225
240
NJJ232250
NJJ232250
In Stock
From
$1,357.29
Federal Pacific
250
240
NJJ232300
NJJ232300
In Stock
From
$453.88
Federal Pacific
300
240
NJJ232350
NJJ232350
In Stock
From
$624.00
Federal Pacific
350
240
NJJ232400
NJJ232400
In Stock
From
$1,344.35
Federal Pacific
400
240
NJJ232400NA
NJJ232400NA
In Stock
From
$624.30
Federal Pacific
400
240
NJJ232500
NJJ232500
In Stock
From
$791.03
Federal Pacific
500
240
NJJ232600
NJJ232600
In Stock
From
$1,058.58
Federal Pacific
600
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.