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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
B250R00S01
B250R00S01
In Stock
From
$96.73
Siemens
50
240
B260R00S01
B260R00S01
In Stock
From
$64.70
Siemens
60
240
B270R00S01
B270R00S01
In Stock
From
$88.97
Siemens
70
240
B280R00S01
B280R00S01
In Stock
From
$105.37
Siemens
80
240
B290R00S01
B290R00S01
In Stock
From
$93.32
Siemens
90
240
B31000S01
B31000S01
In Stock
From
$69.93
Siemens
10
240
BQ2B050QDL
BQ2B050QDL
In Stock
From
$125.90
Siemens
-
240
BQ2H020
BQ2H020
Limited Stock
From
Get Price
Siemens
20
240
BQ2H030
BQ2H030
In Stock
From
$108.11
Siemens
30
240
BQ2S060
BQ2S060
In Stock
From
$42.25
Siemens
60
240
BQD360BP
BQD360BP
In Stock
From
$500.32
Siemens
-
-
ET4060
ET4060
In Stock
From
$31.18
ITE
20
600
HB1B015
HB1B015
In Stock
From
$76.55
Siemens
15
120
HB2B015
HB2B015
In Stock
From
$74.49
Siemens
15
240
HB2B025
HB2B025
In Stock
From
$90.44
Siemens
25
240
HB2B060
HB2B060
In Stock
From
$122.77
Siemens
60
240
HB2B070
HB2B070
In Stock
From
$167.66
Siemens
70
240
HB2B100
HB2B100
In Stock
From
$177.32
Siemens
100
240
NGB1B015
NGB1B015
In Stock
From
$59.96
Siemens
15
347
NGB1B025
NGB1B025
In Stock
From
$99.52
Siemens
25
347
NGB1B030
NGB1B030
In Stock
From
$48.74
Siemens
30
347
NGB1B035
NGB1B035
In Stock
From
$194.00
Siemens
35
347
NGB1B040V
NGB1B040V
In Stock
From
$86.19
Siemens
40
347
NGB1B045B
NGB1B045B
In Stock
From
$115.77
Siemens
45
347
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.