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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
MP24515
MP24515
Limited Stock
From
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Murray Corporation
45
240
MP3100KMST
MP3100KMST
Limited Stock
From
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Murray Corporation
100
240
MP315KH
MP315KH
Limited Stock
From
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Murray Corporation
15
240
MP320KM
MP320KM
Limited Stock
From
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Murray Corporation
20
240
MP340KH
MP340KH
Limited Stock
From
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Murray Corporation
40
240
MP340KM
MP340KM
Limited Stock
From
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Murray Corporation
40
240
MP350KM
MP350KM
Limited Stock
From
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Murray Corporation
50
240
MP360KM
MP360KM
Limited Stock
From
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Murray Corporation
60
240
MP370KH
MP370KH
Limited Stock
From
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Murray Corporation
70
240
MP370KM
MP370KM
Limited Stock
From
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Murray Corporation
70
240
MP380KH
MP380KH
Limited Stock
From
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Murray Corporation
80
240
MP380KM
MP380KM
Limited Stock
From
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Murray Corporation
80
240
MP390KH
MP390KH
Limited Stock
From
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Murray Corporation
90
240
MP390KM
MP390KM
Limited Stock
From
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Murray Corporation
90
240
MPD2200KM
MPD2200KM
Limited Stock
From
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Murray Corporation
200
240
MPD2200RM
MPD2200RM
Limited Stock
From
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Murray Corporation
200
240
MQJ2100KH
MQJ2100KH
Limited Stock
From
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Murray Corporation
100
240
MQJ2100KL
MQJ2100KL
Limited Stock
From
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Murray Corporation
100
240
MQJ2110KL
MQJ2110KL
Limited Stock
From
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Murray Corporation
110
240
MQJ2125KH
MQJ2125KH
Limited Stock
From
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Murray Corporation
125
240
MQJ2125KL
MQJ2125KL
Limited Stock
From
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Murray Corporation
125
240
MQJ2150KH
MQJ2150KH
Limited Stock
From
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Murray Corporation
150
240
MQJ2150KL
MQJ2150KL
Limited Stock
From
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Murray Corporation
150
240
MQJ2175KH
MQJ2175KH
Limited Stock
From
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Murray Corporation
175
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.