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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
T4S250EW
T4S250EW
Limited Stock
From
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ABB
250
600
T4S250TW
T4S250TW
Limited Stock
From
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ABB
250
600
T4SQ080TW
T4SQ080TW
Limited Stock
From
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ABB
80
600
T4SQ100CW
T4SQ100CW
Limited Stock
From
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ABB
100
600
T4SQ100EW
T4SQ100EW
Limited Stock
From
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ABB
100
600
T4SQ150CW
T4SQ150CW
Limited Stock
From
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ABB
150
600
T4SQ150EW
T4SQ150EW
Limited Stock
From
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ABB
150
600
T4SQ250CW
T4SQ250CW
Limited Stock
From
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ABB
250
600
T4SQ250EW
T4SQ250EW
Limited Stock
From
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ABB
250
600
T4SQ250TW
T4SQ250TW
Limited Stock
From
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ABB
250
600
T4V020TW
T4V020TW
Limited Stock
From
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ABB
20
600
T4V030TW
T4V030TW
Limited Stock
From
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ABB
30
600
T4V040TW
T4V040TW
Limited Stock
From
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ABB
40
600
T4V050TW
T4V050TW
Limited Stock
From
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ABB
50
600
T4V080TW
T4V080TW
Limited Stock
From
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ABB
80
600
T4V100BW
T4V100BW
Limited Stock
From
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ABB
100
600
T4V100CW
T4V100CW
Limited Stock
From
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ABB
100
600
T4V100EW
T4V100EW
Limited Stock
From
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ABB
100
600
T4V100TW
T4V100TW
Limited Stock
From
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ABB
100
600
T4V125TW
T4V125TW
Limited Stock
From
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ABB
125
600
T4V150BW
T4V150BW
Limited Stock
From
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ABB
150
600
T4V150CW
T4V150CW
Limited Stock
From
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ABB
150
600
T4V150EW
T4V150EW
Limited Stock
From
Get Price
ABB
150
600
T4V150TW
T4V150TW
Limited Stock
From
Get Price
ABB
150
600
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.