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
HJL36150C
HJL36150C
In Stock
From
$5,271.72
Schneider Electric
150
600
HJM36150
HJM36150
In Stock
From
$603.54
Schneider Electric
150
600
HJM36150U31X
HJM36150U31X
In Stock
From
$1,348.20
Schneider Electric
150
600
HJM3M400
HJM3M400
In Stock
From
$4,257.90
Siemens
400
600
HJN36100
HJN36100
In Stock
From
$196.84
Schneider Electric
100
600
HJP36020
HJP36020
In Stock
From
$936.20
Square D
20
600
HJP36030
HJP36030
In Stock
From
$983.65
Schneider Electric
30
600
HJP36040
HJP36040
In Stock
From
$657.61
Schneider Electric
40
600
HJP36060U31X
HJP36060U31X
In Stock
From
$533.34
Square D
60
600
HJP36060U53X
HJP36060U53X
In Stock
From
$614.70
Schneider Electric
60
600
HJP36070
HJP36070
In Stock
From
$703.98
Schneider Electric
70
600
HJP36125
HJP36125
In Stock
From
$1,082.81
Square D
125
600
HJS3S400
HJS3S400
In Stock
From
$4,320.00
Siemens
400
600
HJW2250F
HJW2250F
In Stock
From
$4,927.41
Eaton
250
690
HJX3B350
HJX3B350
In Stock
From
$7,403.45
Siemens
350
600
HJX3T250
HJX3T250
In Stock
From
$10,318.00
Siemens
250
600
HJX3T400
HJX3T400
In Stock
From
$6,657.72
Siemens
400
600
HJXD62B300
HJXD62B300
In Stock
From
$967.61
Siemens
300
600
HJXD63B200H
HJXD63B200H
In Stock
From
$1,483.70
Siemens
200
600
HJXD63B300HL
HJXD63B300HL
In Stock
From
$2,803.46
Siemens
300
600
HJXD63B350
HJXD63B350
In Stock
From
$1,677.86
Siemens
350
600
HJXD63B350L
HJXD63B350L
In Stock
From
$3,729.46
Siemens
350
600
HJXD63M300
HJXD63M300
In Stock
From
$2,803.46
Siemens
300
600
HK3F120
HK3F120
In Stock
From
$1,432.30
ITE
1200
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.