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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
MPA115AF
MPA115AF
Limited Stock
From
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Murray Corporation
15
120
MP2200KH
MP2200KH
Limited Stock
From
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Murray Corporation
200
240
MP315KHAS
MP315KHAS
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Murray Corporation
15
240
MP315KHF
MP315KHF
Limited Stock
From
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Murray Corporation
15
240
MP315KHM
MP315KHM
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Murray Corporation
15
240
MP315KHST
MP315KHST
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From
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Murray Corporation
15
240
MP315KHST24V
MP315KHST24V
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Murray Corporation
15
240
MP315KHY
MP315KHY
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Murray Corporation
15
240
MP330KHAS
MP330KHAS
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Murray Corporation
30
240
MP330KHF
MP330KHF
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Murray Corporation
30
240
MP330KHM
MP330KHM
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From
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Murray Corporation
30
240
MP330KHST
MP330KHST
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From
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Murray Corporation
30
240
MP330KHST24V
MP330KHST24V
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From
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Murray Corporation
30
240
MP330KHY
MP330KHY
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From
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Murray Corporation
30
240
MB120EG
MB120EG
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Murray Corporation
20
240
MB130EG
MB130EG
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Murray Corporation
30
240
MB220EG
MB220EG
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Murray Corporation
20
240
MB230EG
MB230EG
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Murray Corporation
30
240
MM1520
MM1520
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From
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Murray Corporation
20
120
MP120DFH
MP120DFH
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From
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Murray Corporation
20
120
MP120DFM
MP120DFM
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From
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Murray Corporation
20
120
MP155
MP155
Limited Stock
From
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Murray Corporation
55
120
MP215AFCH
MP215AFCH
Limited Stock
From
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Murray Corporation
15
240
MP220230
MP220230
Limited Stock
From
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Murray Corporation
30
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.