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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
S283-K20
S283-K20
In Stock
From
$49.10
ABB
20
400
S283-K25W
S283-K25W
In Stock
From
$55.44
ABB
25
277
S283-K4W
S283-K4W
In Stock
From
$82.60
ABB
4
277
S283-Z32
S283-Z32
In Stock
From
$111.25
ABB
32
400
S3B225TW
S3B225TW
In Stock
From
$1,628.70
ABB
225
240
S3B225TW-2
S3B225TW-2
In Stock
From
$27.18
ABB
225
240
S3H090TW
S3H090TW
In Stock
From
$184.57
ABB
90
600
S3H150TW
S3H150TW
In Stock
From
$3,038.75
ABB
150
600
S3H225TW
S3H225TW
Limited Stock
From
Get Price
ABB
225
600
S3L010MW
S3L010MW
In Stock
From
$552.68
ABB
10
600
S3L050MW
S3L050MW
In Stock
From
$900.00
ABB
50
600
S3L150TW
S3L150TW
In Stock
From
$2,164.28
ABB
150
600
S3N-2P-70A
S3N-2P-70A
In Stock
From
$499.14
ABB
70
600
S3N-2P-80A
S3N-2P-80A
In Stock
From
$919.31
ABB
80
600
S3N-3P-200A
S3N-3P-200A
In Stock
From
$1,242.75
ABB
200
600
S3N003MW
S3N003MW
In Stock
From
$393.65
ABB
3
600
S3N005MW
S3N005MW
In Stock
From
$161.81
ABB
5
600
S3N010MW
S3N010MW
In Stock
From
$338.44
ABB
10
600
S3N020TW-2
S3N020TW-2
In Stock
From
$50.70
ABB
20
600
S3N025MW
S3N025MW
In Stock
From
$400.80
ABB
25
600
S3N050TW-2
S3N050TW-2
In Stock
From
$374.40
ABB
50
600
S3N060TW-2
S3N060TW-2
In Stock
From
$136.14
ABB
60
600
S3N070TW-2
S3N070TW-2
In Stock
From
$357.14
ABB
70
600
S3N080TW
S3N080TW
In Stock
From
$771.34
ABB
80
600
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.