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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
JJA36250YP
JJA36250YP
In Stock
From
$2,277.23
Square D
250
600
LJA36400U54XEHACSOYH2
LJA36400U54XEHACSOYH2
In Stock
From
$8,511.15
Square D
400
600
M9P22640
M9P22640
Limited Stock
From
Get Price
Schneider Electric
-
-
MG60123
MG60123
In Stock
From
$115.14
Schneider Electric
-
-
MGN61501
MGN61501
In Stock
From
$135.09
Schneider Electric
-
-
MGN61522
MGN61522
In Stock
From
$169.17
Schneider Electric
-
-
MGN61523
MGN61523
In Stock
From
$39.39
Schneider Electric
-
-
MGN61524
MGN61524
In Stock
From
$223.06
Schneider Electric
-
-
QO115C
QO115C
In Stock
From
$19.20
Schneider Electric
-
-
QO120PAFGF
QO120PAFGF
In Stock
From
$66.79
Square D
-
-
QOU1101200
QOU1101200
In Stock
From
$79.34
Schneider Electric
-
-
QOU1201200
QOU1201200
In Stock
From
$77.41
Schneider Electric
-
-
12-718031-11
12-718031-11
In Stock
From
$866.79
Schneider Electric
250
600
60105
60105
In Stock
From
Get Price
Schneider Electric
4
240
60134
60134
In Stock
From
$39.47
Schneider Electric
0.5
240
60160
60160
In Stock
From
Get Price
Schneider Electric
8
240
60176
60176
In Stock
From
$62.84
Schneider Electric
8
240
60178
60178
In Stock
From
$37.90
Square D
13
240
60181
60181
In Stock
From
$22.97
Schneider Electric
25
240
60184
60184
In Stock
From
$112.10
Schneider Electric
1
240
60189
60189
In Stock
From
Get Price
Square D
5
240
60200
60200
Limited Stock
From
Get Price
Schneider Electric
0.5
240
60236
60236
In Stock
From
$57.12
Square D
2
240
60248
60248
In Stock
From
$22.72
Square D
25
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.