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
WMZS2C04
WMZS2C04
In Stock
From
$123.47
Cutler Hammer
4
480
WMZS2C06
WMZS2C06
In Stock
From
$291.94
Cutler Hammer
6
480
WMZS2C10
WMZS2C10
In Stock
From
$334.20
Cutler Hammer
10
480
WMZS2C30
WMZS2C30
In Stock
From
$234.20
Cutler Hammer
30
480
WMZS2C50
WMZS2C50
In Stock
From
$37.67
Cutler Hammer
50
480
WMZS2C63
WMZS2C63
In Stock
From
$90.71
Cutler Hammer
63
480
WMZS2D01
WMZS2D01
In Stock
From
$16.91
Cutler Hammer
1
480
WMZS2D02
WMZS2D02
In Stock
From
$41.55
Cutler Hammer
2
480
WMZS2D03
WMZS2D03
In Stock
From
$37.34
Cutler Hammer
3
480
WMZS2D04
WMZS2D04
In Stock
From
$64.82
Cutler Hammer
4
480
WMZS2D08
WMZS2D08
In Stock
From
$37.42
Cutler Hammer
8
480
WMZS2D20
WMZS2D20
In Stock
From
$25.92
Cutler Hammer
20
480
WMZS2D25
WMZS2D25
In Stock
From
$55.70
Cutler Hammer
25
480
WMZS3C04
WMZS3C04
In Stock
From
$70.00
Cutler Hammer
4
480
WMZS3C05
WMZS3C05
In Stock
From
$43.78
Cutler Hammer
5
480
WMZS3C06
WMZS3C06
In Stock
From
$129.79
Cutler Hammer
6
480
WMZS3C10
WMZS3C10
In Stock
From
$64.97
Cutler Hammer
10
480
WMZS3C25
WMZS3C25
In Stock
From
$187.70
Cutler Hammer
25
480
WMZS3C30
WMZS3C30
In Stock
From
$53.44
Cutler Hammer
30
480
WMZS3D01
WMZS3D01
In Stock
From
$58.65
Cutler Hammer
1
480
WMZS3D03
WMZS3D03
In Stock
From
$47.09
Cutler Hammer
3
480
WMZS3D13
WMZS3D13
In Stock
From
$148.99
Cutler Hammer
13
480
WMZS3D25
WMZS3D25
In Stock
From
$192.50
Cutler Hammer
25
480
WMZS3D30
WMZS3D30
In Stock
From
$38.79
Cutler Hammer
30
480
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.