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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
HJA360156
HJA360156
In Stock
From
$701.86
Square D
15
600
HJA360206
HJA360206
In Stock
From
$1,187.67
Square D
20
600
HJA360406
HJA360406
In Stock
From
$3,002.28
Square D
40
600
HJA36040SA
HJA36040SA
In Stock
From
$1,949.59
Square D
40
600
HJA36040YP
HJA36040YP
In Stock
From
$1,949.59
Square D
40
600
HJA36050YP
HJA36050YP
In Stock
From
$1,198.22
Square D
50
600
HJA36060U53X
HJA36060U53X
In Stock
From
$1,021.54
Square D
60
600
HJA36060YP
HJA36060YP
In Stock
From
$1,224.22
Square D
60
600
HJA36070SA
HJA36070SA
In Stock
From
$569.06
Square D
70
600
HJA36070YP
HJA36070YP
In Stock
From
$989.04
Square D
70
600
HJA36080YP
HJA36080YP
In Stock
From
$758.24
Square D
80
600
HJA36090SA
HJA36090SA
In Stock
From
$1,590.00
Square D
90
600
HJA36090YP
HJA36090YP
In Stock
From
$954.37
Square D
90
600
HJA36100SA
HJA36100SA
In Stock
From
$2,470.66
Square D
100
600
HJA36100YP
HJA36100YP
In Stock
From
$815.25
Square D
100
600
HJA36125SA
HJA36125SA
In Stock
From
$701.21
Square D
125
600
HJA36125YP
HJA36125YP
In Stock
From
$1,683.03
Square D
20
600
HJA36150SA
HJA36150SA
In Stock
From
$3,191.86
Square D
150
600
HJA36150U33X
HJA36150U33X
In Stock
From
$1,945.71
Square D
150
600
HJA36150U53X
HJA36150U53X
In Stock
From
$3,032.27
Square D
150
600
HJD3070W
HJD3070W
In Stock
From
$3,295.16
Westinghouse
70
600
HJD3090W
HJD3090W
In Stock
From
$950.05
Eaton
90
600
HJD3100W
HJD3100W
In Stock
From
$2,799.37
Cutler Hammer
100
600
HJD3150W
HJD3150W
In Stock
From
$1,755.84
Cutler Hammer
150
600
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.