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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
ATF34000
ATF34000
Limited Stock
From
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Trumbull
400
240
ATF37000
ATF37000
Limited Stock
From
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Trumbull
700
240
AT31030
AT31030
Limited Stock
From
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Trumbull
30
240
AT32035
AT32035
Limited Stock
From
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Trumbull
35
250
ATB32040
ATB32040
Limited Stock
From
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Trumbull
40
240
ATB32050
ATB32050
Limited Stock
From
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Trumbull
50
240
ATB32060
ATB32060
Limited Stock
From
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Trumbull
60
240
ATB32070WSP
ATB32070WSP
Limited Stock
From
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Trumbull
70
240
ATB32100WSP
ATB32100WSP
Limited Stock
From
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Trumbull
100
240
ATB36025
ATB36025
Limited Stock
From
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Trumbull
25
600
ATB36060
ATB36060
Limited Stock
From
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Trumbull
60
600
ATB36080
ATB36080
Limited Stock
From
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Trumbull
80
600
ATB36090
ATB36090
Limited Stock
From
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Trumbull
90
600
ATF23000WSP
ATF23000WSP
Limited Stock
From
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Trumbull
200
240
ATF37175
ATF37175
Limited Stock
From
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Trumbull
175
240
ATF37200
ATF37200
Limited Stock
From
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Trumbull
200
240
ATF37225
ATF37225
Limited Stock
From
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Trumbull
225
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.