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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
MP370Y
MP370Y
Limited Stock
From
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Murray Corporation
70
240
MP380AS
MP380AS
Limited Stock
From
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Murray Corporation
80
240
MP380F
MP380F
Limited Stock
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Murray Corporation
80
240
MP380M
MP380M
Limited Stock
From
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Murray Corporation
80
240
MP380ST24V
MP380ST24V
Limited Stock
From
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Murray Corporation
80
240
MP380Y
MP380Y
Limited Stock
From
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Murray Corporation
80
240
MP390AS
MP390AS
Limited Stock
From
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Murray Corporation
90
240
MP390F
MP390F
Limited Stock
From
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Murray Corporation
90
240
MP390M
MP390M
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Murray Corporation
90
240
MP390Y
MP390Y
Limited Stock
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Murray Corporation
90
240
MP2100KMAS
MP2100KMAS
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From
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Murray Corporation
100
240
MP2100KMF
MP2100KMF
Limited Stock
From
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Murray Corporation
100
240
MP2100KMM
MP2100KMM
Limited Stock
From
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Murray Corporation
100
240
MP2100KMST
MP2100KMST
Limited Stock
From
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Murray Corporation
100
240
MP2100KMST24V
MP2100KMST24V
Limited Stock
From
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Murray Corporation
100
240
MP2100KMY
MP2100KMY
Limited Stock
From
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Murray Corporation
100
240
MP2110KMAS
MP2110KMAS
Limited Stock
From
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Murray Corporation
110
240
MP2110KMF
MP2110KMF
Limited Stock
From
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Murray Corporation
110
240
MP2110KMM
MP2110KMM
Limited Stock
From
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Murray Corporation
110
240
MP2110KMST
MP2110KMST
Limited Stock
From
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Murray Corporation
110
240
MP2110KMST24V
MP2110KMST24V
Limited Stock
From
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Murray Corporation
110
240
MP2110KMY
MP2110KMY
Limited Stock
From
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Murray Corporation
110
240
MP2125KMAS
MP2125KMAS
Limited Stock
From
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Murray Corporation
125
240
MP2125KMF
MP2125KMF
Limited Stock
From
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Murray Corporation
125
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.