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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
M1N30T3L
M1N30T3L
In Stock
From
$467.94
Noark Electric
30
600
B1H3C3
B1H3C3
In Stock
From
$102.34
Noark Electric
3
480
M1S80T3L
M1S80T3L
In Stock
From
$194.96
Noark Electric
80
600
M2N225T3L
M2N225T3L
In Stock
From
$960.50
Noark Electric
225
600
M4S500T3L
M4S500T3L
In Stock
From
$1,843.34
Noark Electric
500
600
B1E1B16
B1E1B16
In Stock
From
$10.94
Noark Electric
16
277
B1E1B30
B1E1B30
In Stock
From
$62.14
Noark Electric
30
277
B1E2B13
B1E2B13
In Stock
From
$26.53
Noark Electric
13
480
B1E2B25
B1E2B25
In Stock
From
$28.40
Noark Electric
25
480
B1E2B30
B1E2B30
In Stock
From
$27.27
Noark Electric
30
480
B1E2B4
B1E2B4
In Stock
From
$24.29
Noark Electric
4
480
B1E2B5
B1E2B5
In Stock
From
$21.10
Noark Electric
5
480
B1E2C8
B1E2C8
In Stock
From
$25.63
Noark Electric
8
480
B1E3B15
B1E3B15
In Stock
From
$37.89
Noark Electric
15
480
B1E3B50
B1E3B50
In Stock
From
$33.65
Noark Electric
50
480
B1E3B63
B1E3B63
In Stock
From
$32.04
Noark Electric
63
480
B1E3D13
B1E3D13
In Stock
From
$38.39
Noark Electric
13
480
B1H1B1.6
B1H1B1.6
In Stock
From
$20.17
Noark Electric
1.6
277
B1H1B2
B1H1B2
In Stock
From
$23.22
Noark Electric
2
277
B1H1B8
B1H1B8
In Stock
From
$20.56
Noark Electric
8
277
B1H1D0.5
B1H1D0.5
In Stock
From
$20.97
Noark Electric
0.5
277
B1H1D2
B1H1D2
In Stock
From
$18.25
Noark Electric
2
277
B1H2B0.5
B1H2B0.5
In Stock
From
$33.77
Noark Electric
0.5
480
B1H2B1
B1H2B1
In Stock
From
$39.11
Noark Electric
1
480
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.