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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
ED63B090NAV
ED63B090NAV
In Stock
From
$833.36
Siemens
90
600
ED63B100NAV
ED63B100NAV
In Stock
From
$556.75
Siemens
100
600
ED63B125NAV
ED63B125NAV
In Stock
From
$791.80
Siemens
125
600
FD62F250
FD62F250
In Stock
From
$462.42
Siemens
250
600
FD63T175
FD63T175
In Stock
From
$630.40
Siemens
175
600
FXD63B070L
FXD63B070L
In Stock
From
$5,113.67
Siemens
70
600
HB3B015
HB3B015
In Stock
From
$186.37
Siemens
15
240
HB3B020
HB3B020
In Stock
From
$193.83
Siemens
20
240
HB3B030
HB3B030
In Stock
From
$76.77
Siemens
30
240
HB3B090
HB3B090
In Stock
From
$1,338.52
Siemens
90
240
HEB1B025B
HEB1B025B
In Stock
From
$122.24
Siemens
25
277
HEB2B040B
HEB2B040B
In Stock
From
$230.01
Siemens
40
600
HEB2B100B
HEB2B100B
In Stock
From
$357.88
Siemens
100
600
HEB3B020
HEB3B020
In Stock
From
$689.41
Siemens
20
600
HEB3B040
HEB3B040
In Stock
From
$1,670.13
Siemens
40
600
HFD62F250
HFD62F250
In Stock
From
$591.58
Siemens
250
600
HFD63B150
HFD63B150
In Stock
From
$1,159.33
Siemens
150
600
HFK3T100L
HFK3T100L
In Stock
From
$5,335.55
Siemens
100
600
HFXD63S250A
HFXD63S250A
In Stock
From
$512.33
Siemens
250
600
HGB3K060B
HGB3K060B
In Stock
From
$1,291.36
Siemens
60
600
HGB3K100B
HGB3K100B
In Stock
From
$966.50
Siemens
100
600
HHED62B020
HHED62B020
In Stock
From
$255.88
Siemens
20
600
HHED63B020L
HHED63B020L
In Stock
From
$859.11
Siemens
20
600
HHED63B040
HHED63B040
In Stock
From
$543.89
Siemens
40
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.