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
HHFD62F250
HHFD62F250
In Stock
From
$408.33
Siemens
HLK3B600MA2REX6
HLK3B600MA2REX6
In Stock
From
$710.40
Siemens
HMX3E800
HMX3E800
In Stock
From
$111.11
Siemens
JK3B400
JK3B400
In Stock
From
$55.56
Siemens
LA3200A
LA3200A
In Stock
From
$1,666.67
Siemens
LA600B
LA600B
In Stock
From
$888.89
Siemens
LAF600B
LAF600B
In Stock
From
$888.89
Siemens
LL2B300
LL2B300
In Stock
From
$55.56
Siemens
NFK3B200L
NFK3B200L
In Stock
From
$2,000.00
Siemens
NGSJ250
NGSJ250
In Stock
From
$592.98
Siemens
S1224L1200
S1224L1200
In Stock
From
$9.09
Siemens
SEQ12100SM-TW
SEQ12100SM-TW
In Stock
From
$25.80
Siemens
SEQ32100SM-TW
SEQ32100SM-TW
In Stock
From
$51.58
Siemens
SHP3B160G05
SHP3B160G05
In Stock
From
$555.56
Siemens
SPD6A160LI
SPD6A160LI
In Stock
From
$5,884.05
Siemens
3VF6211-3BK44-0AN1
3VF6211-3BK44-0AN1
In Stock
From
Get Price
Siemens
3VA4125-4ED54-0AA0
3VA4125-4ED54-0AA0
In Stock
From
Get Price
Siemens
5SY41
5SY41
In Stock
From
Get Price
Siemens
ET7003
ET7003
In Stock
From
Get Price
Siemens
HMX3D800
HMX3D800
In Stock
From
Get Price
Siemens
5SJ31067
5SJ31067
Limited Stock
From
Get Price
Siemens
5SJ31257
5SJ31257
Limited Stock
From
Get Price
Siemens
5SU3
5SU3
Limited Stock
From
Get Price
Siemens
CF3M015
CF3M015
In Stock
From
Get Price
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.