1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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
HH83XB415
HH83XB415
In Stock
From
$515.10
United Technologies
HH83XB447
HH83XB447
In Stock
From
$512.08
United Technologies
HH83XB324
HH83XB324
In Stock
From
$283.87
United Technologies
HH83XB356
HH83XB356
In Stock
From
$228.65
United Technologies
HH83XB366
HH83XB366
In Stock
From
$79.17
United Technologies
HH83XB416
HH83XB416
In Stock
From
$390.60
United Technologies
HH83XB437
HH83XB437
In Stock
From
$288.02
United Technologies
HH83XB446
HH83XB446
In Stock
From
$426.09
United Technologies
HH83XB464
HH83XB464
In Stock
From
$826.75
United Technologies
HH83XE633
HH83XE633
In Stock
From
$169.40
United Technologies
HH83XE666
HH83XE666
In Stock
From
$217.15
United Technologies
HH83XB421
HH83XB421
In Stock
From
$505.00
United Technologies
HH83ZB008
HH83ZB008
In Stock
From
$7.81
United Technologies
HH83ZH001
HH83ZH001
In Stock
From
$93.93
United Technologies
HH83B456
HH83B456
In Stock
From
$58.27
United Technologies
HH83XB479
HH83XB479
In Stock
From
$185.84
United Technologies
HH83XB611
HH83XB611
In Stock
From
$320.79
United Technologies
HH83XD261
HH83XD261
In Stock
From
$192.18
United Technologies
HH83XE637
HH83XE637
In Stock
From
$928.32
United Technologies
HH83XA461
HH83XA461
In Stock
From
$1,539.24
United Technologies
HH83XA550
HH83XA550
In Stock
From
$2,188.67
United Technologies
HH83XB296
HH83XB296
In Stock
From
$328.49
United Technologies
HH83XB468
HH83XB468
In Stock
From
$239.77
United Technologies
HH83XC509
HH83XC509
In Stock
From
$2,064.44
United Technologies
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.