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
HDA36040BEUJYP
HDA36040BEUJYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUK
HDA36040BEUK
In Stock
From
$911.98
Square D
40
600
HDA36040BEUKYP
HDA36040BEUKYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUN
HDA36040BEUN
In Stock
From
$911.98
Square D
40
600
HDA36040BEUNYP
HDA36040BEUNYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUO
HDA36040BEUO
In Stock
From
$911.98
Square D
40
600
HDA36040BEUOYP
HDA36040BEUOYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUP
HDA36040BEUP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUPYP
HDA36040BEUPYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUR
HDA36040BEUR
In Stock
From
$911.98
Square D
40
600
HDA36040BEURYP
HDA36040BEURYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEUS
HDA36040BEUS
In Stock
From
$911.98
Square D
40
600
HDA36040BEUSYP
HDA36040BEUSYP
In Stock
From
$911.98
Square D
40
600
HDA36040BEYP
HDA36040BEYP
In Stock
From
$911.98
Square D
40
600
HDA36040BH
HDA36040BH
In Stock
From
$911.98
Square D
40
600
HDA36040BHSD
HDA36040BHSD
In Stock
From
$911.98
Square D
40
600
HDA36040BHSDYP
HDA36040BHSDYP
In Stock
From
$911.98
Square D
40
600
HDA36040BHSH
HDA36040BHSH
In Stock
From
$911.98
Square D
40
600
HDA36040BHSHYP
HDA36040BHSHYP
In Stock
From
$911.98
Square D
40
600
HDA36040BHSJ
HDA36040BHSJ
In Stock
From
$911.98
Square D
40
600
HDA36040BHSJYP
HDA36040BHSJYP
In Stock
From
$911.98
Square D
40
600
HDA36040BHSK
HDA36040BHSK
In Stock
From
$911.98
Square D
40
600
HDA36040BHSKYP
HDA36040BHSKYP
In Stock
From
$911.98
Square D
40
600
HDA36040BHSL
HDA36040BHSL
In Stock
From
$911.98
Square D
40
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.