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
KD2200
KD2200
In Stock
From
$1,609.96
Cutler Hammer
200
600
KD2350
KD2350
In Stock
From
$1,186.38
Cutler Hammer
350
600
KD2400F
KD2400F
In Stock
From
$858.64
Cutler Hammer
400
600
KD3400KX02Y18
KD3400KX02Y18
In Stock
From
$1,818.65
Eaton
400
600
KES3400ALSIG
KES3400ALSIG
In Stock
From
$6,429.15
Eaton
-
600
KT3350T
KT3350T
In Stock
From
$372.66
Eaton
-
600
KW3400F
KW3400F
In Stock
From
$2,270.12
Eaton
400
690
LCL3400F
LCL3400F
In Stock
From
$1,697.12
Eaton
400
600
LD2600
LD2600
In Stock
From
$1,774.25
Cutler Hammer
600
600
LD4600F
LD4600F
In Stock
From
$5,643.00
Eaton
600
600
LG3450
LG3450
In Stock
From
$4,770.61
Eaton
450
600
LG3500
LG3500
In Stock
From
$3,920.07
Westinghouse
500
600
LGC3600FAW
LGC3600FAW
In Stock
From
$3,964.79
Eaton
600
600
LW3500
LW3500
In Stock
From
$3,111.30
Westinghouse
500
690
MDL2800
MDL2800
In Stock
From
$2,291.45
Westinghouse
800
600
MDL2800F
MDL2800F
In Stock
From
$1,020.83
Eaton
800
600
MDLB2800W
MDLB2800W
In Stock
From
$2,793.68
Cutler Hammer
800
600
MDLB3800T33W
MDLB3800T33W
In Stock
From
$2,955.36
Eaton
800
600
ND212T33W
ND212T33W
In Stock
From
$2,154.59
Westinghouse
1200
600
ND312T106W
ND312T106W
In Stock
From
$7,338.27
Eaton
1200
600
ND312T33W
ND312T33W
In Stock
From
$8,786.12
Eaton
1200
600
ND312T36W
ND312T36W
In Stock
From
$6,089.17
Eaton
1200
600
ND312T52W
ND312T52W
In Stock
From
$7,809.82
Eaton
1200
600
ND312T57W
ND312T57W
In Stock
From
$4,921.54
Cutler Hammer
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.