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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
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Manufacturer
Amperage
Voltage
JGS325035W
JGS325035W
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JGU316032W
JGU316032W
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JGU316033W
JGU316033W
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-
JGU316035W
JGU316035W
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-
JGU316036W
JGU316036W
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JGU325032W
JGU325032W
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-
-
JGU325035W
JGU325035W
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JGU325036W
JGU325036W
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JJA261751YP
JJA261751YP
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Square D
-
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NB125 BASE
NB125 BASE
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NFK3B125L
NFK3B125L
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PJA36120U44AAFLEX
PJA36120U44AAFLEX
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Square D
1200
600
SJD6A400LIG
SJD6A400LIG
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-
SJD6A400LSI
SJD6A400LSI
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TBFP125-3
TBFP125-3
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3VA1196-3EF32-0AA0
3VA1196-3EF32-0AA0
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Siemens
-
-
3VA2220-7MS32-0AA0
3VA2220-7MS32-0AA0
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Siemens
-
-
3VA2225-5KP42-0AA0
3VA2225-5KP42-0AA0
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Siemens
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-
C60HD-D4
C60HD-D4
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Schneider Electric
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EM12-T00-000-GND-40A
EM12-T00-000-GND-40A
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E-T-A Circuit Breakers
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S252-C20
S252-C20
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ABB
-
-
S252-K3
S252-K3
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ABB
-
-
S263-D2
S263-D2
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ABB
-
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S274-K2A
S274-K2A
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ABB
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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.