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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
RC3820RT
RC3820RT
In Stock
From
$12.54
Zinsco
-
-
QFP24-150-2
QFP24-150-2
In Stock
From
$101.40
Challenger
-
-
QB115
QB115
In Stock
From
$4.20
Zinsco
-
-
ZEF433-015
ZEF433-015
In Stock
From
$100.24
Zinsco
-
-
QFP24200
QFP24200
In Stock
From
$229.68
Zinsco
-
-
QL50
QL50
In Stock
From
$2.22
Zinsco
-
-
QL24-300
QL24-300
In Stock
From
$166.67
Zinsco
-
-
ZEF431030
ZEF431030
In Stock
From
$45.30
Zinsco
-
-
QFL32200
QFL32200
In Stock
From
Get Price
Zinsco
-
-
QB24320
QB24320
In Stock
From
Get Price
Zinsco
-
-
QFL24200-2
QFL24200-2
In Stock
From
Get Price
Zinsco
-
-
QL15
QL15
In Stock
From
Get Price
Zinsco
-
-
Q243080
Q243080
Limited Stock
From
Get Price
Zinsco
80
240
QB2125
QB2125
Limited Stock
From
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Zinsco
125
240
QB243050
QB243050
Limited Stock
From
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Zinsco
50
240
QB243060
QB243060
Limited Stock
From
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Zinsco
60
240
QB243100
QB243100
Limited Stock
From
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Zinsco
100
240
QCAL110SS
QCAL110SS
Limited Stock
From
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Thomas & Betts
110
240
QCB70
QCB70
Limited Stock
From
Get Price
Zinsco
70
240
QL2424400
QL2424400
Limited Stock
From
Get Price
Zinsco
400
240
VPKUBIZ1520
VPKUBIZ1520
Limited Stock
From
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Connecticut Electric
20
240
VPKUBIZ0220
VPKUBIZ0220
Limited Stock
From
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Connecticut Electric
20
240
Q2430100THD
Q2430100THD
Limited Stock
From
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Zinsco
100
240
Q243070THD
Q243070THD
Limited Stock
From
Get Price
Zinsco
70
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.