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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
CP30-HU-2P-5A
CP30-HU-2P-5A
In Stock
From
$17.36
Mitsubishi
CP30BA1P1M20AA
CP30BA1P1M20AA
In Stock
From
$21.04
Mitsubishi
MB30-SS
MB30-SS
In Stock
From
$8.17
Mitsubishi
MB50-CW
MB50-CW
Limited Stock
From
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Mitsubishi
NF-SF-3050
NF-SF-3050
In Stock
From
$24.24
Mitsubishi
NF100-SWU3P30A
NF100-SWU3P30A
In Stock
From
$166.59
Mitsubishi
NF125-SW-3P-60A
NF125-SW-3P-60A
Limited Stock
From
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Mitsubishi
NF250-CV3P150A
NF250-CV3P150A
Limited Stock
From
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Mitsubishi
NF250-SV-3P-150A
NF250-SV-3P-150A
Limited Stock
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Mitsubishi
NF30-FAU-3P-5A
NF30-FAU-3P-5A
In Stock
From
$40.77
Mitsubishi
NF30-SB-3P
NF30-SB-3P
In Stock
From
$38.49
Mitsubishi
NF30-SB-3P-20A
NF30-SB-3P-20A
In Stock
From
$39.32
Mitsubishi
NF30-SW-2P-20A
NF30-SW-2P-20A
Limited Stock
From
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Mitsubishi
NF30-SW-3P-20A
NF30-SW-3P-20A
Limited Stock
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Mitsubishi
NF32-SW-2P-20A
NF32-SW-2P-20A
Limited Stock
From
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Mitsubishi
NF400-CS
NF400-CS
In Stock
From
$359.94
Mitsubishi
NF50-CB-3P-40A
NF50-CB-3P-40A
Limited Stock
From
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Mitsubishi
NF50-SMU-1-1
NF50-SMU-1-1
In Stock
From
$32.74
Mitsubishi
NF50-SS-3P-30A
NF50-SS-3P-30A
In Stock
From
$67.67
Mitsubishi
NF50-SW-3P-10A
NF50-SW-3P-10A
Limited Stock
From
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Mitsubishi
NF50-SWU2-020
NF50-SWU2-020
In Stock
From
$37.10
Mitsubishi
NF60-CP-3P
NF60-CP-3P
In Stock
From
$122.85
Mitsubishi
NF63-CVF2P10A
NF63-CVF2P10A
In Stock
From
$38.49
Mitsubishi
NF63-SV3P15A
NF63-SV3P15A
Limited Stock
From
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Mitsubishi
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.