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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.
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Part Number
PRICE
Manufacturer
MEL36800
MEL36800
In Stock
From
$420.69
Square D
MEL436LSG21
MEL436LSG21
In Stock
From
$52.04
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MEL436LSGZ
MEL436LSGZ
In Stock
From
$69.80
Square D
MEL836G
MEL836G
In Stock
From
$141.33
Square D
MELC436LSG
MELC436LSG
In Stock
From
$46.26
Square D
MES836LS
MES836LS
In Stock
From
$78.51
Square D
MGP36800LJ
MGP36800LJ
In Stock
From
$4,444.44
Square D
MH340
MH340
In Stock
From
$100.00
Square D
MH360006M
MH360006M
In Stock
From
$88.89
Square D
MH364501253
MH364501253
In Stock
From
$0.02
Square D
MHBC-115
MHBC-115
In Stock
From
$0.02
Square D
MHF3660030DC2146
MHF3660030DC2146
In Stock
From
$896.00
Square D
MHL3610040DC1625
MHL3610040DC1625
In Stock
From
$8.53
Square D
MHL364001386
MHL364001386
In Stock
From
$624.00
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MHL368003901
MHL368003901
In Stock
From
$3,592.00
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MJL36350SKLU
MJL36350SKLU
In Stock
From
$0.02
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MXL364008041
MXL364008041
In Stock
From
$44.44
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NFHFE36220M53
NFHFE36220M53
In Stock
From
$1,187.64
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NLG36600U33X
NLG36600U33X
In Stock
From
$11.11
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NW08H3
NW08H3
In Stock
From
$8,722.68
Square D
PA32500RC
PA32500RC
In Stock
From
$7.36
Square D
PAF361200DC1433
PAF361200DC1433
In Stock
From
$3,130.76
Square D
PAF361200DC1680
PAF361200DC1680
In Stock
From
$0.02
Square D
PGA36060CU44A
PGA36060CU44A
In Stock
From
$11,259.21
Square D
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.