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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
RC3830
RC3830
In Stock
From
$64.90
Zinsco
30
240
BQ240
BQ240
In Stock
From
$100.92
Sylvania
40
240
HAGF15
HAGF15
In Stock
From
$32.64
Challenger
15
120
HAGF20
HAGF20
In Stock
From
$8.74
Challenger
20
120
QC-40
QC-40
In Stock
From
$40.45
Sylvania
40
240
RC3815
RC3815
In Stock
From
$20.48
Zinsco
15
240
RC3850
RC3850
In Stock
From
$64.20
Zinsco
50
240
RC38AL-40
RC38AL-40
In Stock
From
$50.47
Sylvania
40
240
SEH3C015
SEH3C015
In Stock
From
$422.80
Sylvania
15
480
SEH3C060
SEH3C060
In Stock
From
$351.38
Challenger
60
480
SEH3C070
SEH3C070
In Stock
From
$108.66
Sylvania
70
480
SEH3C125
SEH3C125
In Stock
From
$533.14
Challenger
125
480
SEH3C150
SEH3C150
In Stock
From
$431.69
Sylvania
150
480
BQ260
BQ260
In Stock
From
$0.02
Sylvania
60
240
HAGF215
HAGF215
In Stock
From
$234.62
Sylvania
15
120
HAGF220
HAGF220
In Stock
From
$52.85
Sylvania
20
120
HAGF230
HAGF230
In Stock
From
$60.30
Sylvania
30
120
HAGF240
HAGF240
In Stock
From
$9.97
Sylvania
40
120
HAGF30
HAGF30
In Stock
From
$8.42
Zinsco
30
120
QC-15
QC-15
In Stock
From
$30.62
Sylvania
15
240
QFB125-2
QFB125-2
In Stock
From
$321.57
Zinsco
125
240
QFB24200-2
QFB24200-2
In Stock
From
$112.06
Challenger
200
240
QFP125-3
QFP125-3
In Stock
From
$647.52
Zinsco
125
240
QFP150-2
QFP150-2
In Stock
From
$167.35
Zinsco
150
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.