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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
5SX21405
5SX21405
In Stock
From
$19.50
Siemens
40
400
5SX5203-7
5SX5203-7
Limited Stock
From
Get Price
Siemens
3
400
5SX5204-7
5SX5204-7
In Stock
From
$36.17
Siemens
4
400
5SY4163-8
5SY4163-8
Limited Stock
From
Get Price
Siemens
63
400
5SY6201-7
5SY6201-7
In Stock
From
$83.95
Siemens
1
400
5SY6203-7
5SY6203-7
In Stock
From
$59.51
Siemens
3
400
5SY6204-7
5SY6204-7
In Stock
From
$139.59
Siemens
4
400
5SY6206-6
5SY6206-6
Limited Stock
From
Get Price
Siemens
6
400
5SY6206-7
5SY6206-7
In Stock
From
$99.01
Siemens
6
400
5SY6210-6
5SY6210-6
Limited Stock
From
Get Price
Siemens
10
400
5SY6215-7
5SY6215-7
In Stock
From
$124.35
Siemens
1.6
400
5SY6506-6
5SY6506-6
Limited Stock
From
Get Price
Siemens
6
230
5SY6510-6
5SY6510-6
In Stock
From
$42.34
Siemens
10
230
5SY6516-6
5SY6516-6
In Stock
From
$31.50
Siemens
16
230
5SY6516-7
5SY6516-7
Limited Stock
From
Get Price
Siemens
16
400
5SY6520-7
5SY6520-7
Limited Stock
From
Get Price
Siemens
20
400
5SY7210-6
5SY7210-6
Limited Stock
From
Get Price
Siemens
10
400
5SY7216-6
5SY7216-6
Limited Stock
From
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Siemens
16
400
5TE7162
5TE7162
In Stock
From
$71.64
Siemens
-
-
BF125H
BF125H
In Stock
From
$83.58
Siemens
25
120
BF1B030
BF1B030
In Stock
From
Get Price
Siemens
30
120
BF220
BF220
In Stock
From
$600.00
Siemens
20
240
BF230H
BF230H
In Stock
From
$739.63
Siemens
30
240
BG3B020
BG3B020
In Stock
From
$168.15
Siemens
20
240
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.