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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
S204U-K60
S204U-K60
Limited Stock
From
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ABB
60
240
S204U-K8
S204U-K8
Limited Stock
From
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ABB
8
240
S281-Z25
S281-Z25
Limited Stock
From
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ABB
25
230
S281-Z32
S281-Z32
Limited Stock
From
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ABB
32
230
S281-Z4
S281-Z4
Limited Stock
From
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ABB
4
230
S281-Z40
S281-Z40
Limited Stock
From
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ABB
40
230
S281-Z50
S281-Z50
Limited Stock
From
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ABB
50
230
S281-Z6
S281-Z6
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From
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ABB
6
230
S281-Z63
S281-Z63
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From
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ABB
63
230
S281-Z8
S281-Z8
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From
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ABB
8
230
S281B100
S281B100
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ABB
100
230
S281C100
S281C100
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ABB
100
230
S281C80
S281C80
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ABB
80
230
S281UC-Z0.5
S281UC-Z0.5
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From
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ABB
0.5
500
S281UC-Z1
S281UC-Z1
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ABB
1
500
S281UC-Z1.6
S281UC-Z1.6
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From
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ABB
1.6
500
S281UC-Z2
S281UC-Z2
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ABB
2
500
S281UC-Z20
S281UC-Z20
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From
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ABB
20
500
S281UC-Z25
S281UC-Z25
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From
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ABB
25
500
S281UC-Z3
S281UC-Z3
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From
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ABB
3
500
S281UC-Z40
S281UC-Z40
Limited Stock
From
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ABB
40
500
S281UC-Z50
S281UC-Z50
Limited Stock
From
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ABB
50
500
S281UC-Z6
S281UC-Z6
Limited Stock
From
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ABB
6
500
S281UC-Z63
S281UC-Z63
Limited Stock
From
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ABB
63
500
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.