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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
Amperage
Voltage
LA3640036M
LA3640036M
Limited Stock
From
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Square D
400
600
LGF36600U31X
LGF36600U31X
In Stock
From
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Schneider Electric
600
600
LHL3640030DC1627
LHL3640030DC1627
In Stock
From
$2,154.48
Square D
400
600
LJA36400U43XACBDSAYH1
LJA36400U43XACBDSAYH1
In Stock
From
$888.89
Square D
400
600
LJA36400U43XEHYH3
LJA36400U43XEHYH3
In Stock
From
$8,511.15
Square D
400
600
LJA36400U44XEHYH4
LJA36400U44XEHYH4
In Stock
From
$8,511.15
Square D
400
600
LJA36400U44XEHYP
LJA36400U44XEHYP
In Stock
From
$8,511.15
Square D
400
600
LJA36600U44XEHYH4
LJA36600U44XEHYH4
In Stock
From
$8,511.15
Square D
600
600
LJA36600U44XENYO
LJA36600U44XENYO
In Stock
From
$4,680.54
Square D
600
600
MG17459
MG17459
In Stock
From
$95.81
Schneider Electric
60
240
MGL26600
MGL26600
In Stock
From
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Schneider Electric
600
600
PGF36080
PGF36080
In Stock
From
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Square D
800
600
PLF34120U33AABSKMA
PLF34120U33AABSKMA
In Stock
From
$3,547.93
Square D
1200
480
Q2B32150H
Q2B32150H
In Stock
From
$87.26
Square D
150
240
QHB1201021
QHB1201021
In Stock
From
$371.68
Schneider Electric
20
120
QOB3505238
QOB3505238
In Stock
From
$123.39
Square D
50
-
25733
25733
In Stock
From
$16.97
Schneider Electric
40
480
25839
25839
Limited Stock
From
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Schneider Electric
1
240
25853
25853
Limited Stock
From
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Merlin Gerin
2
440
25858
25858
Limited Stock
From
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Schneider Electric
20
440
25859
25859
Limited Stock
From
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Merlin Gerin
25
440
25863
25863
In Stock
From
$9.09
Merlin Gerin
63
440
25866
25866
Limited Stock
From
Get Price
Merlin Gerin
2
440
25879
25879
Limited Stock
From
Get Price
Merlin Gerin
2
440
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.