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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
FAZN-C20
FAZN-C20
In Stock
From
$5.39
Eaton
20
480
FD3150SK
FD3150SK
In Stock
From
$1,976.81
Eaton
150
600
FD4150WA06
FD4150WA06
In Stock
From
$2,023.24
Eaton
150
600
FDB1030
FDB1030
In Stock
From
$329.21
Eaton
30
347
FDB1040
FDB1040
In Stock
From
$141.87
Eaton
40
347
FDB1060
FDB1060
In Stock
From
$63.21
Eaton
60
347
FDB2125S
FDB2125S
In Stock
From
$2.66
Eaton
125
600
FDB3040S
FDB3040S
In Stock
From
$370.19
Eaton
40
600
FDB3060S
FDB3060S
In Stock
From
$279.45
Eaton
60
600
FDB3070S
FDB3070S
Limited Stock
From
Get Price
Eaton
70
600
FDB3090S
FDB3090S
In Stock
From
$5.56
Eaton
90
600
FDB3100S
FDB3100S
In Stock
From
$502.39
Eaton
100
600
GBH1030
GBH1030
In Stock
From
$18.37
Eaton
30
-
GBH1040
GBH1040
In Stock
From
$147.42
Eaton
40
-
GBH1050
GBH1050
In Stock
From
$64.73
Eaton
50
-
GBH1100
GBH1100
In Stock
From
$90.12
Eaton
100
-
GFXB140B2
GFXB140B2
In Stock
From
$67.19
Eaton
40
120
HFDDC3020
HFDDC3020
Limited Stock
From
Get Price
Eaton
20
600
HFDDC3030
HFDDC3030
In Stock
From
$2.69
Eaton
30
600
HFDDC3150D17
HFDDC3150D17
In Stock
From
$3,049.97
Eaton
150
600
HM2P250K5W
HM2P250K5W
In Stock
From
$159.70
Eaton
250
-
KD3400KWA06
KD3400KWA06
In Stock
From
$333.33
Eaton
400
600
MN360800A
MN360800A
In Stock
From
$3,829.75
Eaton
800
600
NZM6B-63/ZM6A-15-NA
NZM6B-63/ZM6A-15-NA
Limited Stock
From
Get Price
Eaton
15
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.