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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
HDA36020AESHYP
HDA36020AESHYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESJ
HDA36020AESJ
In Stock
From
$801.77
Square D
20
600
HDA36020AESJYP
HDA36020AESJYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESK
HDA36020AESK
In Stock
From
$801.77
Square D
20
600
HDA36020AESKYP
HDA36020AESKYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESL
HDA36020AESL
In Stock
From
$801.77
Square D
20
600
HDA36020AESLYP
HDA36020AESLYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESN
HDA36020AESN
In Stock
From
$801.77
Square D
20
600
HDA36020AESNYP
HDA36020AESNYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESP
HDA36020AESP
In Stock
From
$801.77
Square D
20
600
HDA36020AESPYP
HDA36020AESPYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESR
HDA36020AESR
In Stock
From
$801.77
Square D
20
600
HDA36020AESRYP
HDA36020AESRYP
In Stock
From
$801.77
Square D
20
600
HDA36020AESV
HDA36020AESV
In Stock
From
$801.77
Square D
20
600
HDA36020AESVYP
HDA36020AESVYP
In Stock
From
$801.77
Square D
20
600
HDA36020AEUA
HDA36020AEUA
In Stock
From
$801.77
Square D
20
600
HDA36020AEUAYP
HDA36020AEUAYP
In Stock
From
$801.77
Square D
20
600
HDA36020AEUD
HDA36020AEUD
In Stock
From
$801.77
Square D
20
600
HDA36020AEUDYP
HDA36020AEUDYP
In Stock
From
$801.77
Square D
20
600
HDA36020AEUH
HDA36020AEUH
In Stock
From
$801.77
Square D
20
600
HDA36020AEUHYP
HDA36020AEUHYP
In Stock
From
$801.77
Square D
20
600
HDA36020AEUJ
HDA36020AEUJ
In Stock
From
$801.77
Square D
20
600
HDA36020AEUJYP
HDA36020AEUJYP
In Stock
From
$801.77
Square D
20
600
HDA36020AEUK
HDA36020AEUK
In Stock
From
$801.77
Square D
20
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.