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
LB3300
LB3300
In Stock
From
$1,536.44
Westinghouse
300
600
LB3350
LB3350
In Stock
From
$782.32
Westinghouse
350
600
LB3400FS
LB3400FS
Limited Stock
From
Get Price
Westinghouse
400
600
LB3400NW
LB3400NW
In Stock
From
$1,116.38
Westinghouse
400
600
LBB3400
LBB3400
In Stock
From
$717.63
Westinghouse
400
600
MCG3800F
MCG3800F
In Stock
From
$2,350.69
Westinghouse
800
600
GB3100
GB3100
In Stock
From
Get Price
Cutler Hammer
100
240
GHB2020B3
GHB2020B3
In Stock
From
$340.90
Eaton
20
277
1313573
1313573
In Stock
From
$1,094.03
Westinghouse
350
600
2610D83G04
2610D83G04
In Stock
From
$8,815.27
Westinghouse
1000
600
314C531G19
314C531G19
In Stock
From
$706.68
Westinghouse
15
600
314C531G20
314C531G20
In Stock
From
$188.30
Westinghouse
20
600
314C531G24
314C531G24
In Stock
From
$734.96
Westinghouse
40
600
314C531G26
314C531G26
In Stock
From
$779.36
Westinghouse
70
600
314C531G28
314C531G28
In Stock
From
Get Price
Westinghouse
100
600
BA2015
BA2015
In Stock
From
$13.44
Westinghouse
-
240
BA3015H
BA3015H
In Stock
From
$55.00
Westinghouse
30
240
BA3020H
BA3020H
In Stock
From
$126.14
Cutler Hammer
20
240
BA3040H
BA3040H
In Stock
From
$47.55
Westinghouse
40
240
BA3070H
BA3070H
In Stock
From
$151.89
Westinghouse
70
240
BJ3225
BJ3225
In Stock
From
$518.77
Bryant
225
240
BQLT15230
BQLT15230
In Stock
From
$142.78
Eaton
30
240
BR120AFGF
BR120AFGF
In Stock
From
$90.38
Cutler Hammer
20
120
BR215AF
BR215AF
In Stock
From
$49.50
Westinghouse
15
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.