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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
GSB631PC16
GSB631PC16
In Stock
From
$21.57
Carlo Gavazzi
GSB631PC20
GSB631PC20
In Stock
From
$21.57
Carlo Gavazzi
GMB632PC3
GMB632PC3
In Stock
From
$94.23
Carlo Gavazzi
GMB632PC4
GMB632PC4
In Stock
From
$133.82
Carlo Gavazzi
GMB632PC50
GMB632PC50
In Stock
From
$99.19
Carlo Gavazzi
GMB63H1PC5
GMB63H1PC5
In Stock
From
$26.14
Carlo Gavazzi
GMB63H2PC3
GMB63H2PC3
In Stock
From
$129.92
Carlo Gavazzi
GMB63H3PC20
GMB63H3PC20
In Stock
From
$103.22
Carlo Gavazzi
GSB631PB6
GSB631PB6
In Stock
From
$13.97
Carlo Gavazzi
GSB631PC10
GSB631PC10
In Stock
From
$11.67
Carlo Gavazzi
GSB631PC50
GSB631PC50
In Stock
From
$9.24
Carlo Gavazzi
GSB632PC16
GSB632PC16
In Stock
From
$33.86
Carlo Gavazzi
GSB632PC20
GSB632PC20
In Stock
From
$47.06
Carlo Gavazzi
GSB632PC32
GSB632PC32
In Stock
From
$24.20
Carlo Gavazzi
GSB632PC6
GSB632PC6
In Stock
From
$44.23
Carlo Gavazzi
GSB633PB2
GSB633PB2
In Stock
From
$80.14
Carlo Gavazzi
GSB633PB4
GSB633PB4
In Stock
From
$54.70
Carlo Gavazzi
GSB634PB1
GSB634PB1
In Stock
From
$63.70
Carlo Gavazzi
GSB634PB10
GSB634PB10
In Stock
From
$70.78
Carlo Gavazzi
GSB634PB16
GSB634PB16
In Stock
From
$70.78
Carlo Gavazzi
GSB634PB2
GSB634PB2
In Stock
From
$70.78
Carlo Gavazzi
GSB634PB20
GSB634PB20
In Stock
From
$70.78
Carlo Gavazzi
GSB634PB25
GSB634PB25
In Stock
From
$70.78
Carlo Gavazzi
GSB634PB3
GSB634PB3
In Stock
From
$70.78
Carlo Gavazzi
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.