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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
29727
29727
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Merlin Gerin
32
690
29730
29730
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Schneider Electric
100
690
29731
29731
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Merlin Gerin
80
690
29732
29732
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Schneider Electric
63
690
29733
29733
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Merlin Gerin
40
690
29735
29735
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Merlin Gerin
16
690
29736
29736
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Merlin Gerin
50
690
29737
29737
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Merlin Gerin
32
690
29740
29740
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Merlin Gerin
100
690
29741
29741
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Merlin Gerin
80
690
29820
29820
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Merlin Gerin
100
690
29822
29822
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Merlin Gerin
40
690
30409
30409
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Merlin Gerin
160
690
30410
30410
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Schneider Electric
160
690
30411
30411
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Merlin Gerin
160
690
30720
30720
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Merlin Gerin
160
690
30722
30722
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Schneider Electric
100
690
30723
30723
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Merlin Gerin
80
690
30724
30724
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Schneider Electric
63
690
30725
30725
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Merlin Gerin
40
690
30730
30730
Limited Stock
From
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Merlin Gerin
160
690
30731
30731
Limited Stock
From
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Merlin Gerin
125
690
30732
30732
Limited Stock
From
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Schneider Electric
100
690
30733
30733
Limited Stock
From
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Merlin Gerin
80
690
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.