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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
HSJK-3-C-350
HSJK-3-C-350
In Stock
From
$139.60
Challenger
HSJK-3-C-600
HSJK-3-C-600
In Stock
From
$139.60
Challenger
HSJK-3-F-600
HSJK-3-F-600
In Stock
From
$75.42
Challenger
NZM6-63
NZM6-63
In Stock
From
$1,030.42
Eaton
05B7383G15
05B7383G15
In Stock
From
$90.26
Eaton
BRPSURGE
BRPSURGE
In Stock
From
$86.24
Eaton
CD3-Z390-2
CD3-Z390-2
In Stock
From
$106.75
Eaton
QCRSPACER
QCRSPACER
In Stock
From
$47.67
Eaton
SPCL2C16
SPCL2C16
In Stock
From
$22.82
Eaton
SPHM4RM0005
SPHM4RM0005
In Stock
From
$44.55
Eaton
1494D08H09
1494D08H09
In Stock
From
$208.81
Eaton
331-A305JN
331-A305JN
In Stock
From
$42.91
Eaton
CD3-A3-AB-W-70-480AC-3
CD3-A3-AB-W-70-480AC-3
In Stock
From
$360.17
Eaton
FDB3100LS08
FDB3100LS08
In Stock
From
$1,822.92
Eaton
GHQ1035
GHQ1035
In Stock
From
Get Price
Eaton
GI 125-30A
GI 125-30A
In Stock
From
$43.12
Eaton
HKD65K
HKD65K
In Stock
From
Get Price
Eaton
KD1-2
KD1-2
In Stock
From
$7.97
Eaton
KD1-2R5
KD1-2R5
In Stock
From
$14.60
Eaton
KD1-7
KD1-7
In Stock
From
$16.73
Eaton
SPCL1C01
SPCL1C01
In Stock
From
$15.40
Eaton
SPCL2C00
SPCL2C00
In Stock
From
$63.45
Eaton
WMZS1C00
WMZS1C00
In Stock
From
$53.06
Eaton
WMZS3C00
WMZS3C00
In Stock
From
$48.96
Eaton
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.