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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
HDA36100AESD
HDA36100AESD
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESDYP
HDA36100AESDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESH
HDA36100AESH
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESHYP
HDA36100AESHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESJ
HDA36100AESJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESJYP
HDA36100AESJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESK
HDA36100AESK
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESKYP
HDA36100AESKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESL
HDA36100AESL
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESLYP
HDA36100AESLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESN
HDA36100AESN
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESNYP
HDA36100AESNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESP
HDA36100AESP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESPYP
HDA36100AESPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESR
HDA36100AESR
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESRYP
HDA36100AESRYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESV
HDA36100AESV
In Stock
From
$1,782.47
Square D
100
600
HDA36100AESVYP
HDA36100AESVYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AEUA
HDA36100AEUA
In Stock
From
$1,782.47
Square D
100
600
HDA36100AEUAYP
HDA36100AEUAYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AEUD
HDA36100AEUD
In Stock
From
$1,782.47
Square D
100
600
HDA36100AEUDYP
HDA36100AEUDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AEUH
HDA36100AEUH
In Stock
From
$1,782.47
Square D
100
600
HDA36100AEUHYP
HDA36100AEUHYP
In Stock
From
$1,782.47
Square D
100
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.