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
CK31000EE
CK31000EE
In Stock
From
$1,829.40
Federal Horizon
1000
600
CK31000H
CK31000H
In Stock
From
$1,815.78
Federal Horizon
1000
600
CK31000HH
CK31000HH
In Stock
From
$1,797.64
Federal Horizon
1000
600
CK3400EE
CK3400EE
In Stock
From
$3,186.23
Federal Pioneer
400
600
CK3400N-4P
CK3400N-4P
In Stock
From
$4,140.86
Federal Horizon
400
600
020
020
In Stock
From
$22.39
Federal Pacific
20
120
0225FED
0225FED
In Stock
From
$38.74
Federal Pioneer
25
240
0235FED
0235FED
In Stock
From
$59.16
Federal Pioneer
35
240
025
025
Limited Stock
From
Get Price
Federal Pacific
25
120
035
035
In Stock
From
$85.57
Federal Pacific
35
120
115
115
In Stock
From
$2.40
Federal Pacific
15
120
NAGF20
NAGF20
In Stock
From
$153.58
Federal Pioneer
20
120
NAGF30
NAGF30
In Stock
From
$135.59
Federal Pacific
30
120
NB221030
NB221030
In Stock
From
$84.09
Federal Pioneer
30
240
NB221040
NB221040
In Stock
From
$97.36
Federal Pioneer
40
240
NB221060
NB221060
In Stock
From
$371.08
Federal Pioneer
60
240
NB221070
NB221070
In Stock
From
$68.12
Federal Pioneer
70
240
NB221090
NB221090
In Stock
From
$73.09
Federal Pioneer
90
240
NB232015
NB232015
In Stock
From
$204.13
Federal Pioneer
15
240
NB232030
NB232030
In Stock
From
$216.79
Federal Pioneer
30
240
NB232040
NB232040
In Stock
From
$639.45
Federal Pioneer
40
240
NB232050
NB232050
In Stock
From
$1,613.02
Federal Pioneer
50
240
NB250
NB250
In Stock
From
$90.50
Federal Pioneer
50
240
NB2P100
NB2P100
In Stock
From
$652.56
Federal Pioneer
100
240
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.