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
NB231100
NB231100
In Stock
From
$886.24
Federal Pacific
100
240
NB232020H
NB232020H
In Stock
From
$892.92
Federal Pacific
20
240
NB280
NB280
In Stock
From
$24.83
American
80
240
NB2P125
NB2P125
In Stock
From
$800.74
Federal Pacific
125
240
NB2P60
NB2P60
In Stock
From
$53.97
American
60
240
NB2P70
NB2P70
In Stock
From
$90.47
Federal Pacific
70
240
NB315
NB315
In Stock
From
$164.92
Federal Pacific
15
240
NB3P40
NB3P40
In Stock
From
$278.01
Federal Pacific
40
240
NB90
NB90
In Stock
From
$123.98
American
90
240
NBGF15
NBGF15
In Stock
From
$33.33
American
15
120
NBGF20
NBGF20
In Stock
From
$91.27
American
20
120
NBGF25
NBGF25
In Stock
From
$171.58
American
25
120
NC0220
NC0220
In Stock
From
$41.14
Federal Pacific
20
240
NE223070
NE223070
In Stock
From
$204.68
Federal Pacific
70
240
NEF431020
NEF431020
In Stock
From
$157.76
American
20
480
NEF431090
NEF431090
In Stock
From
$449.95
American
90
480
NEF433020R
NEF433020R
In Stock
From
$48.60
American
20
480
NEF433060
NEF433060
In Stock
From
$1,182.85
American
60
480
NEF434040
NEF434040
In Stock
From
$637.28
American
40
480
NEF434050
NEF434050
In Stock
From
$389.25
American
50
480
NF621090
NF621090
In Stock
From
$160.44
American
90
600
NF631015R
NF631015R
In Stock
From
$124.42
Federal Pacific
15
600
NF631040R
NF631040R
In Stock
From
$35.88
American
40
600
NF631070
NF631070
In Stock
From
$791.26
Federal Pacific
70
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.