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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
FS360040A
FS360040A
In Stock
From
$194.79
Thomas & Betts
40
600
FS360090A
FS360090A
In Stock
From
$169.98
Thomas & Betts
90
600
FS360100A
FS360100A
In Stock
From
$320.00
Thomas & Betts
100
600
GFB215
GFB215
In Stock
From
$21.49
Thomas & Betts
15
240
JS360175A
JS360175A
In Stock
From
$589.46
Thomas & Betts
175
600
LSB220400E
LSB220400E
In Stock
From
$1,867.94
Cutler Hammer
400
240
LSB320350E
LSB320350E
In Stock
From
$563.61
Thomas & Betts
350
240
Q15
Q15
In Stock
From
$17.66
Siemens
15
120
Q35
Q35
In Stock
From
$18.36
Siemens
35
240
Q40
Q40
In Stock
From
$12.71
Siemens
40
120
Q50
Q50
In Stock
From
$22.41
Siemens
50
120
QB20
QB20
In Stock
From
$40.95
Thomas & Betts
20
120
QB50
QB50
In Stock
From
$20.46
Zinsco
50
120
QB60
QB60
In Stock
From
$149.88
Zinsco
60
120
QB70
QB70
In Stock
From
$74.40
Zinsco
70
240
QC-15
QC-15
In Stock
From
$30.62
Sylvania
15
240
QC-15-TB
QC-15-TB
In Stock
From
$19.75
Thomas & Betts
15
240
QCAL60
QCAL60
In Stock
From
$78.42
Zinsco
60
240
QCB15
QCB15
In Stock
From
$49.99
Zinsco
15
240
QCB50
QCB50
In Stock
From
$175.35
Thomas & Betts
50
240
R381515
R381515
In Stock
From
$40.08
Zinsco
15
240
R382015
R382015
In Stock
From
$41.34
Zinsco
20
240
R3850
R3850
In Stock
From
$55.86
Zinsco
50
240
R3860
R3860
Limited Stock
From
Get Price
Zinsco
60
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.