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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
MGN61334
MGN61334
In Stock
From
$118.48
Schneider Electric
1
277
MGN61350
MGN61350
In Stock
From
$22.67
Square D
6
480
MGN61357
MGN61357
In Stock
From
$25.34
Schneider Electric
2
480
NC0225
NC0225
In Stock
From
$17.15
Schneider Electric
25
240
NFHLE36200
NFHLE36200
In Stock
From
$2,305.62
Schneider Electric
200
690
NFHLE36250
NFHLE36250
In Stock
From
$3,359.36
Merlin Gerin
250
690
NFNFE46100N10
NFNFE46100N10
In Stock
From
$407.93
Merlin Gerin
100
690
NFNFE46160N16
NFNFE46160N16
In Stock
From
$643.67
Merlin Gerin
160
690
NFNLE46160N16
NFNLE46160N16
In Stock
From
$2,058.65
Square D
160
690
NJHM36400E20
NJHM36400E20
In Stock
From
$3,350.00
Square D
400
600
NJLFE36630F63
NJLFE36630F63
Limited Stock
From
Get Price
Merlin Gerin
630
690
NJNLE46400E20
NJNLE46400E20
In Stock
From
$2,808.47
Schneider Electric
400
690
NRJF36200CU44A
NRJF36200CU44A
In Stock
From
$8,861.71
Merlin Gerin
2000
600
NSC100B3020N
NSC100B3020N
In Stock
From
$105.32
Schneider Electric
20
690
OSMC65H1D3
OSMC65H1D3
In Stock
From
$11.86
Schneider Electric
3
480
OSMC65H2D1
OSMC65H2D1
In Stock
From
$9.40
Schneider Electric
1
480
OSMC65H2D2
OSMC65H2D2
In Stock
From
$9.50
Schneider Electric
2
480
OSMC65H3D2
OSMC65H3D2
In Stock
From
$36.10
Schneider Electric
2
480
QBA221102
QBA221102
In Stock
From
$594.00
Square D
110
240
QBL22200LW
QBL22200LW
In Stock
From
Get Price
Square D
200
240
QOB130EPD2100
QOB130EPD2100
In Stock
From
$163.75
Schneider Electric
30
120
S143B
S143B
In Stock
From
$2,483.09
Schneider Electric
-
600
S144B
S144B
In Stock
From
$2,512.32
Schneider Electric
-
600
1C125
1C125
In Stock
From
$323.96
Schneider Electric
125
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.