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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
K20A
K20A
In Stock
From
$53.46
ABB
20
480
K63A
K63A
In Stock
From
$114.68
ABB
63
480
K63A-2P
K63A-2P
In Stock
From
$82.26
ABB
63
480
PLU702M-K20
PLU702M-K20
In Stock
From
$332.29
ABB
20
240
S202-D63
S202-D63
Limited Stock
From
Get Price
ABB
63
480
S203-C63
S203-C63
In Stock
From
$137.22
ABB
63
480
S281UC-K10
S281UC-K10
Limited Stock
From
Get Price
ABB
10
230
S281UC-K20
S281UC-K20
In Stock
From
$45.45
ABB
20
230
S281UC-K50
S281UC-K50
In Stock
From
$60.90
ABB
50
230
S281UC-K63
S281UC-K63
In Stock
From
$78.07
ABB
63
230
S282UC-K2
S282UC-K2
In Stock
From
$99.19
ABB
2
400
SH203-C32
SH203-C32
Limited Stock
From
Get Price
ABB
32
440
ST201M-B10
ST201M-B10
In Stock
From
$58.40
ABB
10
277
ST201M-C3
ST201M-C3
In Stock
From
$38.63
ABB
3
277
ST201M-C4
ST201M-C4
In Stock
From
$70.37
ABB
4
277
ST201M-C6
ST201M-C6
In Stock
From
$37.25
ABB
6
277
ST201M-D1
ST201M-D1
In Stock
From
$19.77
ABB
1
277
ST201M-K16
ST201M-K16
In Stock
From
$43.09
ABB
16
277
ST201M-K5
ST201M-K5
In Stock
From
$34.18
ABB
5
277
ST202M-B20
ST202M-B20
In Stock
From
$80.64
ABB
20
277
ST202M-K13
ST202M-K13
In Stock
From
$205.92
ABB
13
277
ST202M-K16
ST202M-K16
In Stock
From
$55.22
ABB
16
277
ST203M-K16
ST203M-K16
In Stock
From
$169.75
ABB
16
277
SU201M-C2
SU201M-C2
In Stock
From
$43.22
ABB
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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.