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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
CHFCAF115CS
CHFCAF115CS
In Stock
From
$103.29
Eaton
-
240
CJD63B200L
CJD63B200L
In Stock
From
$2,320.19
Siemens
200
600
CJD63B225
CJD63B225
In Stock
From
$3,935.26
Siemens
225
600
CJD63B225L
CJD63B225L
In Stock
From
$2,852.61
Siemens
225
600
CJD63B250L
CJD63B250L
In Stock
From
$3,781.66
Siemens
250
600
CJD63B300L
CJD63B300L
In Stock
From
$3,867.68
Siemens
300
600
CJD63B350
CJD63B350
In Stock
From
$2,456.53
Siemens
350
600
CJD63B350L
CJD63B350L
In Stock
From
$3,399.88
Siemens
350
600
CJD63B400
CJD63B400
In Stock
From
$2,252.25
Siemens
400
600
CJD63B400L
CJD63B400L
In Stock
From
$3,443.29
Siemens
400
600
CKD3100
CKD3100
In Stock
From
$167.52
Westinghouse
100
600
CKD3100W
CKD3100W
In Stock
From
$607.30
Eaton
100
600
CKD3100X
CKD3100X
In Stock
From
$607.30
Eaton
100
600
CKD3100Y
CKD3100Y
In Stock
From
$1,187.20
Westinghouse
100
600
CKD3125W
CKD3125W
In Stock
From
$934.01
Eaton
125
600
CKD3125X
CKD3125X
In Stock
From
$2,208.59
Westinghouse
125
600
CKD3125Y
CKD3125Y
In Stock
From
$934.01
Eaton
125
600
CKD3150
CKD3150
In Stock
From
Get Price
Eaton
150
600
CKD3150W
CKD3150W
In Stock
From
Get Price
Eaton
150
600
CKD3150X
CKD3150X
In Stock
From
Get Price
Eaton
150
600
CKD3150Y
CKD3150Y
In Stock
From
$1,337.42
Westinghouse
150
600
CKD3175
CKD3175
In Stock
From
$1,675.92
Westinghouse
175
600
CKD3175W
CKD3175W
In Stock
From
$1,321.10
Cutler Hammer
175
600
CKD3175X
CKD3175X
In Stock
From
$1,321.10
Cutler Hammer
175
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.