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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
31166
31166
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From
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Schneider Electric
250
690
31167
31167
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From
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Schneider Electric
250
690
31168
31168
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Square D
320
690
31169
31169
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From
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Square D
320
690
31170
31170
Limited Stock
From
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Schneider Electric
400
690
31171
31171
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From
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Schneider Electric
400
690
31174
31174
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From
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Square D
630
690
31180
31180
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From
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Schneider Electric
100
690
31182
31182
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From
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Square D
200
690
31183
31183
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From
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Square D
200
690
31184
31184
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From
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Schneider Electric
160
690
31185
31185
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From
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Schneider Electric
160
690
31186
31186
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From
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Schneider Electric
250
690
31188
31188
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Schneider Electric
320
690
31190
31190
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Square D
400
690
31191
31191
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Square D
400
690
31330
31330
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Schneider Electric
630
750
31331
31331
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Square D
800
750
31332
31332
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Square D
1000
750
31333
31333
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Square D
1000
750
31334
31334
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Schneider Electric
1250
690
31335
31335
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From
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Square D
1250
750
31336
31336
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Square D
1600
750
31337
31337
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From
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Schneider Electric
1600
750
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.