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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
29810
29810
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Merlin Gerin
100
690
29812
29812
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Merlin Gerin
40
690
30710
30710
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Merlin Gerin
160
690
30712
30712
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Merlin Gerin
100
690
30713
30713
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Schneider Electric
80
690
30714
30714
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From
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Merlin Gerin
63
690
30715
30715
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Schneider Electric
40
690
31710
31710
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Merlin Gerin
250
690
31711
31711
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Merlin Gerin
200
690
31712
31712
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Merlin Gerin
160
690
31713
31713
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Merlin Gerin
125
690
31714
31714
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Merlin Gerin
100
690
31716
31716
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Merlin Gerin
63
690
31717
31717
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Merlin Gerin
40
690
MGN60884
MGN60884
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Merlin Gerin
32
415
MGN60886
MGN60886
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Merlin Gerin
50
415
NJHF46150E20
NJHF46150E20
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Schneider Electric
150
600
NJHF46150F40
NJHF46150F40
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Merlin Gerin
150
600
NJHF46250E20
NJHF46250E20
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Square D
250
600
NJHF46250F40
NJHF46250F40
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Square D
250
600
NJHF46400E20
NJHF46400E20
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Schneider Electric
400
600
NJHF46400F40
NJHF46400F40
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From
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Merlin Gerin
400
600
NJHF46600E20
NJHF46600E20
Limited Stock
From
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Merlin Gerin
600
600
NJHF46600F60
NJHF46600F60
Limited Stock
From
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Merlin Gerin
600
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.