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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
MP170ST24V
MP170ST24V
Limited Stock
From
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Murray Corporation
70
120
MP170Y
MP170Y
Limited Stock
From
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Murray Corporation
70
120
MP280AS
MP280AS
Limited Stock
From
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Murray Corporation
80
240
MP280F
MP280F
Limited Stock
From
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Murray Corporation
80
240
MP280M
MP280M
Limited Stock
From
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Murray Corporation
80
240
MP280ST24V
MP280ST24V
Limited Stock
From
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Murray Corporation
80
240
MP280Y
MP280Y
Limited Stock
From
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Murray Corporation
80
240
MP290AS
MP290AS
Limited Stock
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Murray Corporation
90
240
MP290F
MP290F
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Murray Corporation
90
240
MP290M
MP290M
Limited Stock
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Murray Corporation
90
240
MP290ST24V
MP290ST24V
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From
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Murray Corporation
90
240
MP290Y
MP290Y
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Murray Corporation
90
240
MP120EGH
MP120EGH
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Murray Corporation
20
120
MP120GFH
MP120GFH
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Murray Corporation
20
120
MP2100KHAS
MP2100KHAS
Limited Stock
From
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Murray Corporation
100
240
MP2100KHF
MP2100KHF
Limited Stock
From
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Murray Corporation
100
240
MP2100KHM
MP2100KHM
Limited Stock
From
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Murray Corporation
100
240
MP2100KHST
MP2100KHST
Limited Stock
From
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Murray Corporation
100
240
MP2100KHST24V
MP2100KHST24V
Limited Stock
From
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Murray Corporation
100
240
MP2100KHY
MP2100KHY
Limited Stock
From
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Murray Corporation
100
240
MP2110KHAS
MP2110KHAS
Limited Stock
From
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Murray Corporation
110
240
MP2110KHF
MP2110KHF
Limited Stock
From
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Murray Corporation
110
240
MP2110KHM
MP2110KHM
Limited Stock
From
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Murray Corporation
110
240
MP2110KHST
MP2110KHST
Limited Stock
From
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Murray Corporation
110
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.