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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
24692
24692
Limited Stock
From
Get Price
Merlin Gerin
40
440
24693
24693
Limited Stock
From
Get Price
Merlin Gerin
50
440
25014
25014
Limited Stock
From
Get Price
Schneider Electric
20
440
28995
28995
In Stock
From
$41.41
Schneider Electric
40
600
28998
28998
In Stock
From
$120.34
Square D
80
600
31100
31100
In Stock
From
$87.08
Schneider Electric
100
750
31105
31105
In Stock
From
$11.46
Square D
160
750
31108
31108
In Stock
From
$99.97
Square D
320
750
31137
31137
In Stock
From
$32.83
Schneider Electric
400
600
31164
31164
In Stock
From
$0.37
Square D
160
690
31181
31181
In Stock
From
$1.01
Schneider Electric
100
690
31342
31342
In Stock
From
$2.47
Square D
630
690
31343
31343
In Stock
From
$2.72
Square D
630
690
31820
31820
In Stock
From
$677.95
Merlin Gerin
250
690
A9F18240
A9F18240
In Stock
From
$50.40
Schneider Electric
40
400
A9F19210
A9F19210
In Stock
From
$33.55
Schneider Electric
10
400
A9F19363
A9F19363
In Stock
From
$66.59
Schneider Electric
63
400
A9N19801
A9N19801
Limited Stock
From
Get Price
Schneider Electric
63
400
A9N19810
A9N19810
In Stock
From
$196.57
Schneider Electric
80
400
A9N19825
A9N19825
In Stock
From
$213.63
Schneider Electric
125
400
A9N19826
A9N19826
In Stock
From
$277.55
Schneider Electric
125
400
A9R82491
A9R82491
In Stock
From
$200.24
Schneider Electric
100
230
BGA24020Y4
BGA24020Y4
In Stock
From
Get Price
Schneider Electric
20
480
BV4T012J
BV4T012J
In Stock
From
$398.20
Schneider Electric
12.5
600
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.