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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.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
MD3800WK
MD3800WK
Limited Stock
From
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Cutler Hammer
800
600
MDSC3800F
MDSC3800F
Limited Stock
From
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Cutler Hammer
800
600
NGH212033E
NGH212033E
Limited Stock
From
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Eaton
1200
480
NH360700A
NH360700A
Limited Stock
From
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Cutler Hammer
700
600
NH360800A
NH360800A
Limited Stock
From
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Cutler Hammer
800
600
NH360900A
NH360900A
Limited Stock
From
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Cutler Hammer
900
600
NS36120YA
NS36120YA
Limited Stock
From
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Cutler Hammer
1200
600
QCGFT1015W1
QCGFT1015W1
Limited Stock
From
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Cutler Hammer
30
240
QCGFT1015W2
QCGFT1015W2
Limited Stock
From
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Cutler Hammer
30
240
QCHGFT2015
QCHGFT2015
Limited Stock
From
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Cutler Hammer
15
240
QCHGFT2020
QCHGFT2020
Limited Stock
From
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Cutler Hammer
20
240
QCHGFT2025
QCHGFT2025
Limited Stock
From
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Cutler Hammer
25
240
QCHGFT2030
QCHGFT2030
Limited Stock
From
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Cutler Hammer
30
240
QHCW3015H
QHCW3015H
Limited Stock
From
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Eaton
15
240
QHPW3015H
QHPW3015H
Limited Stock
From
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Cutler Hammer
15
240
QHPW3020H
QHPW3020H
Limited Stock
From
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Cutler Hammer
20
240
QHPX3015H
QHPX3015H
Limited Stock
From
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Cutler Hammer
15
240
QHPX3020H
QHPX3020H
Limited Stock
From
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Cutler Hammer
20
240
QHPX3025H
QHPX3025H
Limited Stock
From
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Cutler Hammer
25
240
QHPX3030H
QHPX3030H
Limited Stock
From
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Cutler Hammer
30
240
QHPX3035H
QHPX3035H
Limited Stock
From
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Cutler Hammer
35
240
QHPX3040H
QHPX3040H
Limited Stock
From
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Cutler Hammer
40
240
QHPX3045H
QHPX3045H
Limited Stock
From
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Cutler Hammer
45
240
QHPX3050H
QHPX3050H
Limited Stock
From
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Cutler Hammer
50
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.