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
Amperage
Voltage
Q23030CT2
Q23030CT2
In Stock
From
$17.19
Siemens
30
240
Q235
Q235
In Stock
From
$20.48
Siemens
35
240
Q24030CT2
Q24030CT2
In Stock
From
$111.86
Siemens
40
240
Q240H
Q240H
In Stock
From
$174.12
Siemens
40
240
Q250
Q250
In Stock
From
$39.75
Siemens
50
240
Q250H
Q250H
In Stock
From
$189.05
Siemens
50
240
Q260
Q260
In Stock
From
$20.63
Siemens
60
240
Q26000S01
Q26000S01
In Stock
From
$132.37
Siemens
60
240
Q260H
Q260H
In Stock
From
$375.24
Siemens
60
240
Q270H
Q270H
In Stock
From
$230.36
Siemens
70
240
Q280
Q280
In Stock
From
$38.66
Siemens
80
240
Q280H
Q280H
In Stock
From
$158.96
Siemens
80
240
Q280HH
Q280HH
In Stock
From
$123.29
Siemens
80
240
Q29000S01
Q29000S01
In Stock
From
$85.71
Siemens
90
240
Q290HH
Q290HH
In Stock
From
Get Price
Siemens
90
240
Q315
Q315
In Stock
From
$31.14
Siemens
15
240
Q320
Q320
In Stock
From
$59.74
Siemens
20
240
Q32500S01
Q32500S01
In Stock
From
$202.19
Siemens
25
240
Q335
Q335
In Stock
From
$194.26
Siemens
35
240
Q33500S01
Q33500S01
In Stock
From
$207.13
Siemens
35
240
Q34000S01
Q34000S01
In Stock
From
$145.47
Siemens
40
240
Q360
Q360
In Stock
From
$70.64
Siemens
60
240
Q36000S01
Q36000S01
In Stock
From
$363.31
Siemens
60
240
Q360H
Q360H
In Stock
From
$175.68
Siemens
60
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.