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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
JA3S-A3-EB-01-D-A-20-2
JA3S-A3-EB-01-D-A-20-2
In Stock
From
$191.70
Eaton
JAIS-A38-AA-04-W-L
JAIS-A38-AA-04-W-L
In Stock
From
$10.78
Eaton
KPR3A
KPR3A
In Stock
From
$66.25
Eaton
LGH3630NNW02
LGH3630NNW02
In Stock
From
$5,421.52
Eaton
MBH316
MBH316
Limited Stock
From
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Eaton
MCH210
MCH210
Limited Stock
From
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Eaton
MCH363
MCH363
Limited Stock
From
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Eaton
MDH232
MDH232
Limited Stock
From
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Eaton
MDH310
MDH310
Limited Stock
From
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Eaton
MDL150
MDL150
Limited Stock
From
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Eaton
MDL163
MDL163
Limited Stock
From
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Eaton
MFL1003
MFL1003
Limited Stock
From
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Eaton
NA400T
NA400T
In Stock
From
$369.56
Eaton
NS2-200-NA
NS2-200-NA
In Stock
From
$1,988.29
Eaton
NZM 14-1000 S
NZM 14-1000 S
In Stock
From
$1,475.67
Eaton
NZM7-100N
NZM7-100N
In Stock
From
$280.44
Eaton
NZM7-100S
NZM7-100S
Limited Stock
From
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Eaton
NZM7-63N
NZM7-63N
In Stock
From
$206.67
Eaton
NZM7-63N-CNA
NZM7-63N-CNA
In Stock
From
$118.97
Eaton
PBSM-402/003-MW
PBSM-402/003-MW
Limited Stock
From
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Eaton
PDG3XRCD4P600
PDG3XRCD4P600
In Stock
From
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Eaton
PFIM-80/4/01-MW
PFIM-80/4/01-MW
Limited Stock
From
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Eaton
PKNM-6/1N/C/003-MW
PKNM-6/1N/C/003-MW
Limited Stock
From
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Eaton
PKZM0-16/SC
PKZM0-16/SC
In Stock
From
$107.09
Eaton
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.