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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
HFXD63B100L
HFXD63B100L
In Stock
From
$903.52
Siemens
100
600
HFXD63B110
HFXD63B110
In Stock
From
$3,730.34
Siemens
110
600
HFXD63B110L
HFXD63B110L
In Stock
From
Get Price
Siemens
110
600
HFXD63B125L
HFXD63B125L
In Stock
From
$1,060.44
Siemens
125
600
HFXD63B175L
HFXD63B175L
In Stock
From
$962.82
Siemens
175
600
HFXD63B200L
HFXD63B200L
In Stock
From
$746.97
Siemens
200
600
HFXD63B225L
HFXD63B225L
In Stock
From
$830.99
Siemens
225
600
HFXD63B250L
HFXD63B250L
In Stock
From
$912.08
Siemens
250
600
HHFXD63B150
HHFXD63B150
In Stock
From
$1,700.50
Siemens
150
600
HLXD63B250
HLXD63B250
In Stock
From
$1,127.72
Siemens
250
600
HLXD63B300
HLXD63B300
In Stock
From
$1,362.45
Siemens
300
600
HLXD63B400
HLXD63B400
In Stock
From
$2,251.01
Siemens
400
600
QJH22B090
QJH22B090
In Stock
From
$276.48
Siemens
90
240
QJH22B225
QJH22B225
In Stock
From
$325.58
Siemens
225
240
QJH23B090
QJH23B090
In Stock
From
$835.95
Siemens
90
240
QRH22B125
QRH22B125
In Stock
From
$352.17
Siemens
125
240
QRH22B125L
QRH22B125L
In Stock
From
$592.09
Siemens
125
240
QRH22B150
QRH22B150
In Stock
From
$359.53
Siemens
150
240
QRH22B150L
QRH22B150L
In Stock
From
$692.21
Siemens
150
240
QRH22B175L
QRH22B175L
In Stock
From
$366.73
Siemens
175
240
QRH22B225
QRH22B225
In Stock
From
$346.89
Siemens
225
240
QRH22B225L
QRH22B225L
In Stock
From
$607.37
Siemens
225
240
QRH22B250L
QRH22B250L
In Stock
From
$383.99
Siemens
250
240
QRH23B250L
QRH23B250L
In Stock
From
$389.03
Siemens
250
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.