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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
LGB1K080
LGB1K080
Limited Stock
From
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Siemens
80
347
LGB1K090
LGB1K090
Limited Stock
From
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Siemens
90
347
LGB1K100
LGB1K100
Limited Stock
From
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Siemens
100
347
LGB1K110
LGB1K110
Limited Stock
From
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Siemens
110
347
LGB1K125
LGB1K125
Limited Stock
From
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Siemens
125
347
LGG1B015
LGG1B015
Limited Stock
From
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Siemens
15
347
LGG1B020
LGG1B020
Limited Stock
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Siemens
20
347
LGG1B025
LGG1B025
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Siemens
25
347
LGG1B030
LGG1B030
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Siemens
30
347
LGG1B035
LGG1B035
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Siemens
35
347
LGG1B040
LGG1B040
Limited Stock
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Siemens
40
347
LGG1B045
LGG1B045
Limited Stock
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Siemens
45
347
LGG1B050
LGG1B050
Limited Stock
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Siemens
50
347
LGG1B060
LGG1B060
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Siemens
60
347
LGG1B070
LGG1B070
Limited Stock
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Siemens
70
347
LGG1B080
LGG1B080
Limited Stock
From
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Siemens
80
347
LGG1B090
LGG1B090
Limited Stock
From
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Siemens
90
347
LGG1B100
LGG1B100
Limited Stock
From
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Siemens
100
347
LGG1B110
LGG1B110
Limited Stock
From
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Siemens
110
347
LGG1B125
LGG1B125
Limited Stock
From
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Siemens
125
347
LQ15N
LQ15N
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Zinsco
15
240
LQ20N
LQ20N
Limited Stock
From
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Zinsco
20
240
LV429252
LV429252
Limited Stock
From
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Schneider Electric
-
-
LV429253
LV429253
Limited Stock
From
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Schneider Electric
-
-
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.