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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.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
Voltage
S273-K6
S273-K6
In Stock
From
$59.37
ABB
-
-
S273-K63
S273-K63
In Stock
From
$17.21
ABB
-
-
S273-K6A
S273-K6A
In Stock
From
$22.29
ABB
-
-
S273-K6NA
S273-K6NA
In Stock
From
$28.64
ABB
-
-
S273-KS15
S273-KS15
In Stock
From
$37.81
ABB
-
-
S273-NA K10A
S273-NA K10A
Limited Stock
From
Get Price
ABB
-
-
S273B6
S273B6
Limited Stock
From
Get Price
ABB
-
-
S274-C10
S274-C10
Limited Stock
From
Get Price
ABB
-
-
S274-C15
S274-C15
Limited Stock
From
Get Price
ABB
-
-
S274-C32
S274-C32
Limited Stock
From
Get Price
ABB
-
-
S274-K-16
S274-K-16
In Stock
From
$94.42
ABB
-
-
S274-K-16A
S274-K-16A
In Stock
From
$93.27
ABB
-
-
S281-B6
S281-B6
Limited Stock
From
Get Price
ABB
-
-
S281-K-10-NA
S281-K-10-NA
In Stock
From
$9.87
ABB
-
-
S281-K0.5
S281-K0.5
Limited Stock
From
Get Price
ABB
-
-
S281-K0.75
S281-K0.75
In Stock
From
$20.72
ABB
-
-
S281-K16A
S281-K16A
In Stock
From
$13.87
ABB
-
-
S281-K1A
S281-K1A
In Stock
From
$9.34
ABB
-
-
S281-K20A
S281-K20A
In Stock
From
$20.55
ABB
20
400
S281-K32A
S281-K32A
Limited Stock
From
Get Price
ABB
-
-
S281-K4A
S281-K4A
In Stock
From
$11.67
ABB
-
-
S281-K6A
S281-K6A
In Stock
From
$12.25
ABB
-
-
S281-K8A
S281-K8A
In Stock
From
$40.04
ABB
-
-
S281-NA-B20
S281-NA-B20
Limited Stock
From
Get Price
ABB
-
-
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.