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
EF3B090
EF3B090
In Stock
From
$852.17
ITE
90
600
EF3B090L
EF3B090L
In Stock
From
$487.16
Siemens
90
600
EF3B100L
EF3B100L
In Stock
From
$474.83
Siemens
100
600
EF3B110
EF3B110
In Stock
From
$1,739.74
ITE
110
600
EF3B110L
EF3B110L
In Stock
From
$1,514.29
Siemens
110
600
EF3B125
EF3B125
In Stock
From
$2,868.92
Siemens
125
600
EF3B125L
EF3B125L
In Stock
From
$1,375.83
ITE
125
600
EF3H150
EF3H150
In Stock
From
$1,073.60
Siemens
150
600
EF3L050
EF3L050
In Stock
From
$510.00
Siemens
50
600
EF3L050Z
EF3L050Z
In Stock
From
$734.84
Siemens
50
600
EF3S100
EF3S100
In Stock
From
$870.06
Siemens
100
600
EF3S100L
EF3S100L
In Stock
From
$452.41
ITE
100
600
EF3S150
EF3S150
In Stock
From
$912.43
ITE
150
600
EF3S150L
EF3S150L
In Stock
From
$950.23
ITE
150
600
EH1B015L
EH1B015L
In Stock
From
$29.40
Siemens
15
277
EH1B020L
EH1B020L
In Stock
From
$40.23
ITE
20
277
EH1B025
EH1B025
In Stock
From
$15.85
Siemens
25
277
EH1B025L
EH1B025L
In Stock
From
$15.85
Siemens
25
277
EH1B035
EH1B035
In Stock
From
$195.03
ITE
35
277
EH1B070
EH1B070
Limited Stock
From
Get Price
ITE
70
277
EH1B100
EH1B100
In Stock
From
$65.02
Siemens
100
277
EH2B025
EH2B025
In Stock
From
$289.11
Siemens
25
480
EH2B035
EH2B035
In Stock
From
$342.95
ITE
35
480
EH2B070
EH2B070
In Stock
From
$721.41
ITE
70
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.