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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
5SL6632-7
5SL6632-7
Limited Stock
From
Get Price
Siemens
32
400
5SN-1320
5SN-1320
In Stock
From
$39.44
Siemens
20
380
5SN1-332
5SN1-332
In Stock
From
$38.08
Siemens
32
380
5SN1306
5SN1306
In Stock
From
$22.69
Siemens
6
380
5SN1310
5SN1310
In Stock
From
$29.44
Siemens
10
-
5SN1316
5SN1316
In Stock
From
$29.79
Siemens
16
-
5SN1G2A
5SN1G2A
In Stock
From
$35.27
Siemens
2
380
5SN2-2-NG-04
5SN2-2-NG-04
Limited Stock
From
Get Price
Siemens
4
-
5SN71010-KB30
5SN71010-KB30
In Stock
From
$69.99
Siemens
1
415
5SN7104-0KB30
5SN7104-0KB30
In Stock
From
$59.29
Siemens
4
415
5SN7106-0KB30
5SN7106-0KB30
In Stock
From
$44.25
Siemens
6
415
5SN7110-0KB30
5SN7110-0KB30
In Stock
From
$27.22
Siemens
10
415
5SN7206-0KB30
5SN7206-0KB30
In Stock
From
$5.05
Siemens
6
380
5SN7216-0KB30
5SN7216-0KB30
In Stock
From
$16.62
Siemens
16
380
5SN9-G8A
5SN9-G8A
Limited Stock
From
Get Price
Siemens
8
415
5SN9102-0KB30
5SN9102-0KB30
In Stock
From
$97.72
Siemens
2
380
5SN9106-0KB30
5SN9106-0KB30
In Stock
From
$128.29
Siemens
6
380
5SX3/4
5SX3/4
In Stock
From
$6.43
Siemens
4
400
5SX7/8
5SX7/8
In Stock
From
$56.56
Siemens
8
400
5SZ3246-0KA30
5SZ3246-0KA30
In Stock
From
$61.01
Siemens
-
-
B220AFH
B220AFH
In Stock
From
$87.01
Siemens
-
-
BL-350
BL-350
In Stock
From
$237.91
Siemens
-
-
BL215
BL215
In Stock
From
$36.74
Siemens
-
-
BL240
BL240
In Stock
From
$22.17
Siemens
-
-
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.