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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
HED43B125
HED43B125
In Stock
From
$636.88
Siemens
125
480
HFXD63B070
HFXD63B070
In Stock
From
$1,552.72
Siemens
70
600
HFXD63B125
HFXD63B125
In Stock
From
$1,116.43
Siemens
125
600
HFXD63B150
HFXD63B150
In Stock
From
$875.21
Siemens
150
600
HFXD63B175
HFXD63B175
In Stock
From
$1,110.85
Siemens
175
600
HFXD63B200
HFXD63B200
In Stock
From
$1,703.35
Siemens
200
600
HFXD63B225
HFXD63B225
In Stock
From
$1,223.80
Siemens
225
600
HFXD63B250
HFXD63B250
In Stock
From
$912.33
Siemens
250
600
HHFXD63B125
HHFXD63B125
In Stock
From
$3,841.10
Siemens
125
600
HHFXD63B250
HHFXD63B250
In Stock
From
$2,477.97
Siemens
250
600
HLXD63B500
HLXD63B500
In Stock
From
$3,251.65
Siemens
500
600
HLXD63B600
HLXD63B600
In Stock
From
$1,768.82
Siemens
600
600
HLXD63B600H
HLXD63B600H
In Stock
From
$1,430.09
Siemens
600
600
NGG3B020
NGG3B020
In Stock
From
$277.89
Siemens
20
600
NXD63B100
NXD63B100
In Stock
From
$3,142.89
Siemens
1000
600
NXD63B120
NXD63B120
In Stock
From
$3,829.28
Siemens
1200
600
NXD63B900
NXD63B900
In Stock
From
$8,228.89
Siemens
900
600
QRH22B200
QRH22B200
In Stock
From
$352.17
Siemens
200
240
QRH23B150
QRH23B150
In Stock
From
$557.09
Siemens
150
240
QRH23B200
QRH23B200
In Stock
From
$746.92
Siemens
200
240
B120AFH
B120AFH
In Stock
From
$67.11
Siemens
20
120
BE120
BE120
In Stock
From
$84.61
Siemens
20
120
BE120H
BE120H
In Stock
From
$234.00
Siemens
20
120
BE215
BE215
In Stock
From
$156.78
Siemens
15
240
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.