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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
PA800RC
PA800RC
In Stock
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Square D
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PJL36100AASK
PJL36100AASK
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From
$0.02
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PLM34000S12LUYP
PLM34000S12LUYP
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Square D
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PLP34080CU31AAFBDSL
PLP34080CU31AAFBDSL
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From
$0.02
Square D
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Q1-100NT
Q1-100NT
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Square D
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Q1B-270-AC
Q1B-270-AC
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Q232200MT
Q232200MT
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Square D
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Q232225MT
Q232225MT
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Square D
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Q2L3000M8022
Q2L3000M8022
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Square D
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Q2M3225H5700
Q2M3225H5700
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Square D
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QDL32225Z
QDL32225Z
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QIL3100
QIL3100
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Square D
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QO2105WN
QO2105WN
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$0.02
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QO2305WN
QO2305WN
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$0.02
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SKA322535
SKA322535
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Square D
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EDB24030SA
EDB24030SA
Limited Stock
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Schneider Electric
30
480
EDB34045SA
EDB34045SA
Limited Stock
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Square D
45
480
LA36200
LA36200
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Square D
200
600
BDA261251
BDA261251
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Square D
125
600
LJL36250U31X
LJL36250U31X
Limited Stock
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Square D
250
600
LJL36400U31XSA
LJL36400U31XSA
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From
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Schneider Electric
400
600
PJA36040U33A
PJA36040U33A
Limited Stock
From
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Square D
400
600
PJA36060U31A
PJA36060U31A
Limited Stock
From
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Square D
600
600
PJA36100U31A
PJA36100U31A
Limited Stock
From
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Square D
1000
600
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.