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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.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
LLS36600U31X
LLS36600U31X
Limited Stock
From
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Square D
600
600
LRL36000S60X
LRL36000S60X
Limited Stock
From
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Square D
600
600
LRL36250U33X
LRL36250U33X
Limited Stock
From
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Schneider Electric
250
600
MGA268002
MGA268002
Limited Stock
From
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Schneider Electric
800
600
MGL36350AASA
MGL36350AASA
Limited Stock
From
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Schneider Electric
350
600
MGM36450
MGM36450
Limited Stock
From
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Square D
450
600
MJF36450
MJF36450
Limited Stock
From
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Schneider Electric
450
600
NB100N
NB100N
Limited Stock
From
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Merlin Gerin
100
690
NS1000H
NS1000H
Limited Stock
From
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Merlin Gerin
1000
690
NS1250L
NS1250L
Limited Stock
From
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Merlin Gerin
1250
690
NS1250NA
NS1250NA
Limited Stock
From
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Merlin Gerin
1250
440
NS1600L
NS1600L
Limited Stock
From
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Merlin Gerin
1600
690
NS2500H
NS2500H
Limited Stock
From
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Merlin Gerin
2500
690
NS2500N
NS2500N
Limited Stock
From
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Merlin Gerin
2500
690
NS3200N
NS3200N
Limited Stock
From
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Schneider Electric
3200
690
NSC100S3100MAN
NSC100S3100MAN
Limited Stock
From
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Schneider Electric
100
690
NSE100E
NSE100E
Limited Stock
From
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Schneider Electric
100
690
NSE160H4160
NSE160H4160
Limited Stock
From
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Schneider Electric
160
480
NSE160N
NSE160N
Limited Stock
From
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Schneider Electric
160
690
NSE160N3125ELA
NSE160N3125ELA
Limited Stock
From
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Schneider Electric
125
480
NSE400N
NSE400N
Limited Stock
From
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Schneider Electric
400
690
NSE630N
NSE630N
Limited Stock
From
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Schneider Electric
630
690
NSE630S
NSE630S
Limited Stock
From
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Schneider Electric
630
690
NSX100NA
NSX100NA
Limited Stock
From
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Schneider Electric
100
690
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.