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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
5SP4391-7
5SP4391-7
In Stock
From
$440.75
Siemens
100
400
5SY4102-7
5SY4102-7
In Stock
From
$40.14
Siemens
2
400
5SY4104-7
5SY4104-7
In Stock
From
$20.42
Siemens
4
400
5SY4111-7
5SY4111-7
In Stock
From
$45.80
Siemens
6
400
5SY4202-7
5SY4202-7
In Stock
From
$71.04
Siemens
2
400
5SY4204-7
5SY4204-7
In Stock
From
$144.79
Siemens
4
400
5SY4210-7
5SY4210-7
In Stock
From
$109.47
Siemens
10
400
5SY5102-7
5SY5102-7
In Stock
From
$92.27
Siemens
2
400
5SY5106-7
5SY5106-7
In Stock
From
$38.37
Siemens
6
400
5SY5116-7
5SY5116-7
In Stock
From
$91.80
Siemens
16
400
5SY5125-7
5SY5125-7
Limited Stock
From
Get Price
Siemens
25
400
5SY5210-7
5SY5210-7
In Stock
From
$330.27
Siemens
10
400
5SY5216-7
5SY5216-7
In Stock
From
$331.74
Siemens
16
400
A15NI
A15NI
In Stock
From
$24.49
Wadsworth
15
120
A220NI
A220NI
In Stock
From
$69.61
Wadsworth
20
240
A230
A230
In Stock
From
$39.62
Thomas & Betts
30
240
A230NI
A230NI
In Stock
From
$101.40
Wadsworth
30
240
A240
A240
In Stock
From
$48.19
Thomas & Betts
40
240
A240NI
A240NI
In Stock
From
$161.80
Wadsworth
40
240
B3100Y
B3100Y
In Stock
From
$130.86
Siemens
100
240
BAB2020D
BAB2020D
In Stock
From
$141.39
Eaton
20
240
BAB3060HT
BAB3060HT
In Stock
From
$197.96
Eaton
60
240
BABF1020
BABF1020
In Stock
From
$125.55
Cutler Hammer
20
240
BD1515
BD1515
In Stock
From
$19.85
Eaton
15
120
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.