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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
FM6B090TW
FM6B090TW
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Siemens
90
600
FM6B100TW
FM6B100TW
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Siemens
100
600
FM6B125TW
FM6B125TW
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Siemens
125
600
FM6B150TW
FM6B150TW
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From
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Siemens
150
600
FM6B175TW
FM6B175TW
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Siemens
175
600
FM6B200TW
FM6B200TW
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Siemens
200
600
FM6B225TW
FM6B225TW
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Siemens
225
600
FM6B250TC3W
FM6B250TC3W
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Siemens
250
600
FM6B250TW
FM6B250TW
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Siemens
250
600
FMKB175TW
FMKB175TW
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Siemens
175
1000
FMKB200TW
FMKB200TW
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Siemens
200
1000
FMKB225TW
FMKB225TW
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Siemens
225
1000
FMKB250TC3W
FMKB250TC3W
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Siemens
250
1000
FMKB250TW
FMKB250TW
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Siemens
250
1000
FXD62B070NAV
FXD62B070NAV
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Siemens
70
600
FXD62B080NAV
FXD62B080NAV
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Siemens
80
600
FXD62B090NAV
FXD62B090NAV
Limited Stock
From
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Siemens
90
600
FXD62B100NAV
FXD62B100NAV
Limited Stock
From
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Siemens
100
600
FXD62B110NAV
FXD62B110NAV
Limited Stock
From
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Siemens
110
600
FXD62B125NAV
FXD62B125NAV
Limited Stock
From
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Siemens
125
600
FXD62B150NAV
FXD62B150NAV
Limited Stock
From
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Siemens
150
600
FXD62B175NAV
FXD62B175NAV
Limited Stock
From
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Siemens
175
600
FXD62B200NAV
FXD62B200NAV
Limited Stock
From
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Siemens
200
600
FXD62B225NAV
FXD62B225NAV
Limited Stock
From
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Siemens
225
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.