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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
NGB2K060
NGB2K060
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Siemens
60
600
NGB2K070
NGB2K070
Limited Stock
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Siemens
70
600
NGB2K080
NGB2K080
Limited Stock
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Siemens
80
600
NGB2K090
NGB2K090
Limited Stock
From
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Siemens
90
600
NGB2K100
NGB2K100
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Siemens
100
600
NGB2K110
NGB2K110
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Siemens
110
600
NGB2K125
NGB2K125
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Siemens
125
600
NGB3K015
NGB3K015
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Siemens
15
600
NGB3K025
NGB3K025
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Siemens
25
600
NGB3K035
NGB3K035
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Siemens
35
600
NGB3K040
NGB3K040
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Siemens
40
600
NGB3K045
NGB3K045
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Siemens
45
600
NGB3K060
NGB3K060
Limited Stock
From
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Siemens
60
600
NGB3K070
NGB3K070
Limited Stock
From
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Siemens
70
600
NGB3K090
NGB3K090
Limited Stock
From
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Siemens
90
600
NGB3K100
NGB3K100
Limited Stock
From
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Siemens
100
600
NGB3K110
NGB3K110
Limited Stock
From
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Siemens
110
600
NGB3K125
NGB3K125
Limited Stock
From
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Siemens
125
600
NGG3B045B
NGG3B045B
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From
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Siemens
45
600
NH360700AB
NH360700AB
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Cutler Hammer
700
600
NH360800AB
NH360800AB
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From
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Cutler Hammer
800
600
NH360900AB
NH360900AB
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From
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Cutler Hammer
900
600
NH361000AB
NH361000AB
Limited Stock
From
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Cutler Hammer
1000
600
NH361200AB
NH361200AB
Limited Stock
From
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Cutler Hammer
1200
600
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.