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
Amperage
Voltage
F3B080
F3B080
In Stock
From
$196.94
Gould
80
600
JKL2B275
JKL2B275
In Stock
From
Get Price
Siemens
275
600
JXD63F400
JXD63F400
In Stock
From
Get Price
Siemens
400
600
Q220AFCN
Q220AFCN
In Stock
From
$204.93
Siemens
-
-
SHND6A120LSIGH
SHND6A120LSIGH
In Stock
From
$17,815.22
Siemens
1200
600
SJL63N400G
SJL63N400G
In Stock
From
Get Price
Siemens
400
600
SKMF3B800
SKMF3B800
In Stock
From
Get Price
Siemens
800
600
SLD6B400LI
SLD6B400LI
In Stock
From
$4,591.72
Siemens
400
600
31230
31230
In Stock
From
$2.00
Siemens
-
-
31240
31240
In Stock
From
$182.67
Siemens
-
-
3VA4125-6ED14-0AA0
3VA4125-6ED14-0AA0
In Stock
From
$248.59
Siemens
-
-
3VA4130-6ED14-0AA0
3VA4130-6ED14-0AA0
In Stock
From
$246.00
Siemens
-
-
3VA4135-5ED14-0AA0
3VA4135-5ED14-0AA0
In Stock
From
$259.42
Siemens
-
-
3VA4135-6ED14-0AA0
3VA4135-6ED14-0AA0
In Stock
From
$253.84
Siemens
-
-
3VA4140-5ED14-0AA0
3VA4140-5ED14-0AA0
In Stock
From
$212.80
Siemens
-
-
3VA4180-6ED24-0AA0
3VA4180-6ED24-0AA0
In Stock
From
$529.74
Siemens
-
-
3VA5111-6ED36-0AA0
3VA5111-6ED36-0AA0
In Stock
From
$1,255.63
Siemens
-
-
3VA5130-5ED21-0AA0
3VA5130-5ED21-0AA0
In Stock
From
$478.21
Siemens
-
-
3VA5135-6ED36-0AA0
3VA5135-6ED36-0AA0
In Stock
From
$782.75
Siemens
-
-
3VA5140-6ED36-0AA0
3VA5140-6ED36-0AA0
In Stock
From
$767.23
Siemens
-
-
3VA5170-6ED36-0AA0
3VA5170-6ED36-0AA0
In Stock
From
$944.48
Siemens
-
-
3VA5190-6ED36-0AA0
3VA5190-6ED36-0AA0
In Stock
From
$1,003.22
Siemens
-
-
3VA5322-6EC31-0AA0
3VA5322-6EC31-0AA0
In Stock
From
$2,340.00
Siemens
-
-
3VA5330-6EC31-2AA0
3VA5330-6EC31-2AA0
In Stock
From
$1,431.83
Siemens
-
-
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.