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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
B1E1C10
B1E1C10
In Stock
From
$13.30
Noark Electric
10
277
B1H3C10
B1H3C10
In Stock
From
$55.97
Noark Electric
10
480
B1N2C32
B1N2C32
In Stock
From
$44.74
Noark Electric
32
240
M2N150T3L
M2N150T3L
In Stock
From
$991.37
Noark Electric
150
600
B1A1D13
B1A1D13
In Stock
From
$7.42
Noark Electric
13
240
B1E1B1.6
B1E1B1.6
In Stock
From
$10.94
Noark Electric
1.6
277
B1E1B8
B1E1B8
In Stock
From
$19.29
Noark Electric
8
277
B1E2D32
B1E2D32
In Stock
From
$21.88
Noark Electric
32
480
B1E3B30
B1E3B30
In Stock
From
$32.04
Noark Electric
30
480
B1H1B0.5
B1H1B0.5
In Stock
From
$17.28
Noark Electric
0.5
277
B1H1C3
B1H1C3
In Stock
From
$22.99
Noark Electric
3
277
B1H1C4
B1H1C4
In Stock
From
$17.84
Noark Electric
4
277
B1H1C6
B1H1C6
In Stock
From
$37.52
Noark Electric
6
277
B1H1C8
B1H1C8
In Stock
From
$11.86
Noark Electric
8
277
B1H2D15
B1H2D15
In Stock
From
$34.30
Noark Electric
15
480
B1H3C1
B1H3C1
In Stock
From
$60.31
Noark Electric
1
480
B1H3C2
B1H3C2
In Stock
From
$51.26
Noark Electric
2
480
B1H3C4
B1H3C4
In Stock
From
$61.61
Noark Electric
4
480
B1H3C8
B1H3C8
In Stock
From
$31.31
Noark Electric
8
480
B1N1C4
B1N1C4
In Stock
From
$10.67
Noark Electric
4
240
B1NQ1B2
B1NQ1B2
In Stock
From
$10.22
Noark Electric
2
240
B1NQ1C3
B1NQ1C3
In Stock
From
$10.79
Noark Electric
3
240
B1NQ2D30T
B1NQ2D30T
In Stock
From
$65.84
Noark Electric
30
240
B1NQ2D50T
B1NQ2D50T
In Stock
From
$49.02
Noark Electric
50
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.