1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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.
SORT BY
Part Number
PRICE
Manufacturer
HH83XB452
HH83XB452
Limited Stock
From
Get Price
Eaton
JA1-A2-A-0015-02E
JA1-A2-A-0015-02E
Limited Stock
From
Get Price
Eaton
JA1S-A0AB01DAW
JA1S-A0AB01DAW
Limited Stock
From
Get Price
Eaton
JA1S-D2-A-0010-02E
JA1S-D2-A-0010-02E
Limited Stock
From
Get Price
Eaton
JA1S-D3-A-0002-02E
JA1S-D3-A-0002-02E
Limited Stock
From
Get Price
Eaton
MGL403
MGL403
Limited Stock
From
Get Price
Eaton
NZM6-100/ZM6-100
NZM6-100/ZM6-100
Limited Stock
From
Get Price
Eaton
NZM9-250/ZM9-250
NZM9-250/ZM9-250
Limited Stock
From
Get Price
Eaton
NZMS4-100-1000-OBI
NZMS4-100-1000-OBI
Limited Stock
From
Get Price
Eaton
PKZM0-6.3/SP
PKZM0-6.3/SP
Limited Stock
From
Get Price
Eaton
PLHT-C125/3
PLHT-C125/3
Limited Stock
From
Get Price
Eaton
PLHT-D80/3
PLHT-D80/3
Limited Stock
From
Get Price
Eaton
PLS6-C16/3-MW
PLS6-C16/3-MW
Limited Stock
From
Get Price
Eaton
SPCL2C04
SPCL2C04
Limited Stock
From
Get Price
Eaton
SPCL3C10
SPCL3C10
Limited Stock
From
Get Price
Eaton
SPHM1RM0040
SPHM1RM0040
Limited Stock
From
Get Price
Eaton
SPHM1RM008
SPHM1RM008
Limited Stock
From
Get Price
Eaton
SPHM2HM0R75
SPHM2HM0R75
Limited Stock
From
Get Price
Eaton
SPHM4HM0015
SPHM4HM0015
Limited Stock
From
Get Price
Eaton
SPHM4RM0010
SPHM4RM0010
Limited Stock
From
Get Price
Eaton
SPHM4RM0025
SPHM4RM0025
Limited Stock
From
Get Price
Eaton
103MB3
103MB3
Limited Stock
From
Get Price
Eaton
138876
138876
Limited Stock
From
Get Price
Eaton
A305-JN
A305-JN
Limited Stock
From
Get Price
Eaton
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.