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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
EF3M150L
EF3M150L
Limited Stock
From
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Siemens
150
600
EH1A003
EH1A003
Limited Stock
From
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Siemens
3
277
EH1A003L
EH1A003L
Limited Stock
From
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ITE
3
277
EH1A005
EH1A005
Limited Stock
From
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Siemens
5
277
EH1A005L
EH1A005L
Limited Stock
From
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Siemens
5
277
EH1A010
EH1A010
Limited Stock
From
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Siemens
10
277
EH1A010L
EH1A010L
Limited Stock
From
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Siemens
10
277
EH1A015
EH1A015
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ITE
15
277
EH1A015L
EH1A015L
Limited Stock
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ITE
15
277
EH1A020
EH1A020
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ITE
20
277
EH1A020L
EH1A020L
Limited Stock
From
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Siemens
20
277
EH1A025
EH1A025
Limited Stock
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ITE
25
277
EH1A025L
EH1A025L
Limited Stock
From
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Siemens
25
277
EH1A030
EH1A030
Limited Stock
From
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Siemens
30
277
EH1A030L
EH1A030L
Limited Stock
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Siemens
30
277
EH1A035
EH1A035
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ITE
35
277
EH1A035L
EH1A035L
Limited Stock
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ITE
35
277
EH1A040
EH1A040
Limited Stock
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ITE
40
277
EH1A040L
EH1A040L
Limited Stock
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ITE
40
277
EH1A045
EH1A045
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ITE
45
277
EH1A045L
EH1A045L
Limited Stock
From
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ITE
45
277
EH1A050
EH1A050
Limited Stock
From
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ITE
50
277
EH1A050L
EH1A050L
Limited Stock
From
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ITE
50
277
EH1A060
EH1A060
Limited Stock
From
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Siemens
60
277
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.