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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
48A3769G29
48A3769G29
In Stock
From
$159.25
Westinghouse
48A3769G31
48A3769G31
In Stock
From
$196.34
Westinghouse
4975D71G56
4975D71G56
In Stock
From
$176.08
Westinghouse
4975D71G59
4975D71G59
In Stock
From
$159.42
Westinghouse
4979D06G17
4979D06G17
In Stock
From
$60.92
Westinghouse
4991D35G45
4991D35G45
In Stock
From
$93.08
Westinghouse
504C747G05
504C747G05
In Stock
From
$176.08
Westinghouse
504C747G07
504C747G07
In Stock
From
$122.49
Westinghouse
504C747G18
504C747G18
In Stock
From
$119.62
Westinghouse
545125
545125
In Stock
From
$11.27
Westinghouse
5682D24G29
5682D24G29
In Stock
From
$628.29
Westinghouse
63E2543
63E2543
In Stock
From
$304.40
Westinghouse
656D222G02
656D222G02
In Stock
From
$91.29
Westinghouse
656D222G04
656D222G04
In Stock
From
$360.57
Westinghouse
656D223G02
656D223G02
In Stock
From
$37.77
Westinghouse
70E1881
70E1881
In Stock
From
$241.14
Westinghouse
70E3040
70E3040
In Stock
From
$183.73
Westinghouse
731A898G04
731A898G04
In Stock
From
$438.33
Westinghouse
77802-18BXA
77802-18BXA
In Stock
From
$836.99
Westinghouse
999-005
999-005
In Stock
From
$22.42
Westinghouse
999-009
999-009
In Stock
From
$37.81
Westinghouse
E3050C
E3050C
In Stock
From
$134.35
Westinghouse
EA2012
EA2012
In Stock
From
$31.42
Westinghouse
EB3090V
EB3090V
In Stock
From
$249.81
Westinghouse
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.