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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
HDA36125AESJYP
HDA36125AESJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESK
HDA36125AESK
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESKYP
HDA36125AESKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESL
HDA36125AESL
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESLYP
HDA36125AESLYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESN
HDA36125AESN
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESNYP
HDA36125AESNYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESP
HDA36125AESP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESPYP
HDA36125AESPYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESR
HDA36125AESR
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESRYP
HDA36125AESRYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESV
HDA36125AESV
In Stock
From
$1,646.69
Square D
125
600
HDA36125AESVYP
HDA36125AESVYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUA
HDA36125AEUA
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUAYP
HDA36125AEUAYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUD
HDA36125AEUD
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUDYP
HDA36125AEUDYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUH
HDA36125AEUH
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUHYP
HDA36125AEUHYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUJ
HDA36125AEUJ
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUJYP
HDA36125AEUJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUK
HDA36125AEUK
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUKYP
HDA36125AEUKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AEUN
HDA36125AEUN
In Stock
From
$1,646.69
Square D
125
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.