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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
F3B030
F3B030
In Stock
From
$14.62
ITE
30
600
F3B035
F3B035
In Stock
From
$524.83
ITE
35
600
F3B040
F3B040
In Stock
From
$180.54
Gould
40
600
F3B050
F3B050
In Stock
From
$114.02
ITE
50
600
F3B050M
F3B050M
In Stock
From
$389.19
Siemens
50
600
F3B060
F3B060
In Stock
From
$817.62
ITE
60
600
F3B070
F3B070
In Stock
From
$449.13
Siemens
70
600
F3B090
F3B090
In Stock
From
$524.91
ITE
90
600
F3B100
F3B100
In Stock
From
$981.72
ITE
100
600
F3B100M
F3B100M
In Stock
From
$784.98
Siemens
100
600
F62F250
F62F250
In Stock
From
$412.99
ITE
250
600
FFF3M250
FFF3M250
In Stock
From
$649.17
Siemens
250
415
FJ3S225
FJ3S225
In Stock
From
$231.94
ITE
225
600
HE43B035
HE43B035
In Stock
From
$248.59
ITE
35
480
HE62B015
HE62B015
In Stock
From
$6.55
ITE
15
600
HE62B100
HE62B100
In Stock
From
$0.03
ITE
100
600
HGB3B100
HGB3B100
In Stock
From
$981.31
Siemens
-
-
HKB3B100
HKB3B100
In Stock
From
$3,585.29
Siemens
1000
600
HKB3B600
HKB3B600
In Stock
From
$2,772.42
Siemens
600
600
HKB3B700
HKB3B700
In Stock
From
$5,434.13
ITE
700
600
HKB3B800
HKB3B800
In Stock
From
$1,777.03
ITE
800
600
HKB3B900
HKB3B900
In Stock
From
$10,198.87
Siemens
900
600
HL2B450
HL2B450
In Stock
From
$1,976.61
Siemens
450
600
HL2B500
HL2B500
In Stock
From
$1,045.80
Siemens
500
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.