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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
HDA36030AEBKUSYP
HDA36030AEBKUSYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEBKYP
HDA36030AEBKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESD
HDA36030AESD
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESDYP
HDA36030AESDYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESH
HDA36030AESH
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESHYP
HDA36030AESHYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESJ
HDA36030AESJ
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESJYP
HDA36030AESJYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESK
HDA36030AESK
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESKYP
HDA36030AESKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESL
HDA36030AESL
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESLYP
HDA36030AESLYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESN
HDA36030AESN
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESNYP
HDA36030AESNYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESP
HDA36030AESP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESPYP
HDA36030AESPYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESR
HDA36030AESR
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESRYP
HDA36030AESRYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESV
HDA36030AESV
In Stock
From
$1,179.92
Square D
30
600
HDA36030AESVYP
HDA36030AESVYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUA
HDA36030AEUA
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUAYP
HDA36030AEUAYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUD
HDA36030AEUD
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUDYP
HDA36030AEUDYP
In Stock
From
$1,179.92
Square D
30
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.