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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
Q24020CT2NC
Q24020CT2NC
In Stock
From
$70.32
Siemens
40
240
Q24040CT2NC
Q24040CT2NC
In Stock
From
$72.76
Siemens
40
240
QA115AFCN
QA115AFCN
In Stock
From
$40.62
Siemens
15
120
QF130
QF130
In Stock
From
$77.00
Siemens
30
120
QF230AH
QF230AH
In Stock
From
$170.07
Siemens
30
240
QF240
QF240
In Stock
From
Get Price
Siemens
40
240
QF250AH
QF250AH
In Stock
From
$300.82
Siemens
50
240
QJ22B060H
QJ22B060H
In Stock
From
$549.30
Siemens
60
240
QJ22B060HL
QJ22B060HL
In Stock
From
$372.26
Siemens
60
240
QJ22B060L
QJ22B060L
In Stock
From
$356.93
Siemens
60
240
QJ22B070HL
QJ22B070HL
In Stock
From
$376.02
Siemens
70
240
QJ22B070L
QJ22B070L
In Stock
From
$322.72
Siemens
70
240
QJ22B100L
QJ22B100L
In Stock
From
$205.71
Siemens
100
240
QJ22B125HL
QJ22B125HL
In Stock
From
$515.95
Siemens
125
240
QJ22B125L
QJ22B125L
In Stock
From
$432.11
Siemens
125
240
QJ22B150HL
QJ22B150HL
In Stock
From
$439.08
Siemens
150
240
QJ22B150L
QJ22B150L
In Stock
From
$481.60
Siemens
150
240
QJ22B175HL
QJ22B175HL
In Stock
From
$409.58
Siemens
175
240
QJ22B175L
QJ22B175L
In Stock
From
$372.07
Siemens
175
240
QJ22B200L
QJ22B200L
In Stock
From
$661.07
Siemens
200
240
QJ22B225AL
QJ22B225AL
In Stock
From
$305.87
Siemens
225
240
QJ22M060HL
QJ22M060HL
In Stock
From
$359.95
Siemens
60
240
QJ22M070HL
QJ22M070HL
In Stock
From
$355.46
Siemens
70
240
QJ22M080HL
QJ22M080HL
In Stock
From
$327.53
Siemens
80
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.