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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
5SN2303
5SN2303
Limited Stock
From
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Siemens
-
-
5SN3-G32A
5SN3-G32A
In Stock
From
$65.84
Siemens
-
-
5SN3206
5SN3206
In Stock
From
$174.52
Siemens
-
-
5SN3301
5SN3301
In Stock
From
$107.38
Siemens
-
-
5SN3302
5SN3302
In Stock
From
$83.32
Siemens
-
-
5SN3315
5SN3315
Limited Stock
From
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Siemens
-
-
5SN5316-8
5SN5316-8
In Stock
From
$99.33
Siemens
-
-
5SN5316-8F
5SN5316-8F
In Stock
From
$34.44
Siemens
-
-
5SN5350
5SN5350
In Stock
From
$97.61
Siemens
-
-
5SN6325
5SN6325
In Stock
From
$287.07
Siemens
-
-
5SZ3-440-3A
5SZ3-440-3A
Limited Stock
From
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Siemens
-
-
5SZ6466
5SZ6466
Limited Stock
From
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Siemens
-
-
5TL1163-1
5TL1163-1
Limited Stock
From
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Siemens
-
-
5TL1363-1
5TL1363-1
Limited Stock
From
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Siemens
-
-
B215GF
B215GF
In Stock
From
$188.24
Siemens
15
240
B220GF
B220GF
In Stock
From
$225.34
Siemens
20
240
B220GFHH
B220GFHH
In Stock
From
$333.11
Siemens
20
240
B230GF
B230GF
In Stock
From
$225.67
Siemens
30
240
B230GFH
B230GFH
In Stock
From
$387.73
Siemens
30
240
B230GFHH
B230GFHH
In Stock
From
$339.85
Siemens
30
240
B270GFHH
B270GFHH
In Stock
From
Get Price
Siemens
70
240
BQ3-M090H
BQ3-M090H
In Stock
From
$287.79
Siemens
-
-
EB3100S&F-2
EB3100S&F-2
In Stock
From
$224.45
Siemens
-
-
EQ-P9412
EQ-P9412
In Stock
From
$27.92
Siemens
-
-
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.