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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
2CU5L
2CU5L
In Stock
From
$68.98
Altech Corp
5
-
3VA5222-6EC31-0AA0
3VA5222-6EC31-0AA0
In Stock
From
$1,072.96
Siemens
225
600
3VA6115-6HL31-0AA0
3VA6115-6HL31-0AA0
In Stock
From
$1,907.27
Siemens
150
600
3VA6140-6HL31-0AA0
3VA6140-6HL31-0AA0
In Stock
From
$1,248.09
Siemens
40
600
3VA6340-6HN31-0AA0
3VA6340-6HN31-0AA0
In Stock
From
$2,328.62
Siemens
400
600
3VA6340-7HL31-0AA0
3VA6340-7HL31-0AA0
In Stock
From
$4,520.65
Siemens
400
600
B315HH00S01
B315HH00S01
In Stock
From
$281.85
Siemens
15
240
B325H00S01
B325H00S01
In Stock
From
$156.41
Siemens
25
240
B325HH00S01
B325HH00S01
In Stock
From
$307.50
Siemens
25
240
B335H00S01
B335H00S01
In Stock
From
$124.68
Siemens
35
240
B380HH00S01
B380HH00S01
In Stock
From
$427.38
Siemens
80
240
BAB1035S1
BAB1035S1
In Stock
From
$21.92
Eaton
35
240
BAB2010S1
BAB2010S1
In Stock
From
$48.24
Eaton
10
240
BAB2015HS
BAB2015HS
In Stock
From
$109.78
Eaton
15
240
BAB2025S1
BAB2025S1
In Stock
From
$109.88
Eaton
25
240
BAB2030HS
BAB2030HS
In Stock
From
$180.00
Eaton
30
240
BAB2090S1
BAB2090S1
In Stock
From
$102.66
Eaton
90
240
BAB2110S1
BAB2110S1
In Stock
From
$241.39
Westinghouse
110
240
BAB2125S1
BAB2125S1
In Stock
From
$251.03
Eaton
125
240
BGL36100LU
BGL36100LU
In Stock
From
$721.49
Square D
-
600
BQ1B015H
BQ1B015H
In Stock
From
$62.90
Siemens
15
120
BQ1B015L
BQ1B015L
In Stock
From
$69.54
Siemens
15
120
BQ1B025H
BQ1B025H
In Stock
From
$69.25
Siemens
25
120
BQ1B030H
BQ1B030H
In Stock
From
$64.45
Siemens
30
120
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.