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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.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
3VF3112-1ML41-0AA0
3VF3112-1ML41-0AA0
Limited Stock
From
Get Price
Siemens
-
-
3VF3211-1BU41-0AA0
3VF3211-1BU41-0AA0
Limited Stock
From
Get Price
Siemens
-
-
3VF3211-1BW41-0AC2
3VF3211-1BW41-0AC2
In Stock
From
$319.65
Siemens
-
-
3VF3211-1FU41-0AA0
3VF3211-1FU41-0AA0
In Stock
From
$530.65
Siemens
-
-
3VF4211-10K41-0AA0
3VF4211-10K41-0AA0
In Stock
From
$1.66
Siemens
-
-
3VF4231-1DF41-0A00
3VF4231-1DF41-0A00
In Stock
From
$1,870.97
Siemens
-
-
3VF4231-2DF41-1DA0
3VF4231-2DF41-1DA0
In Stock
From
$635.57
Siemens
-
-
3VL4140-1VM30-0AA0
3VL4140-1VM30-0AA0
In Stock
From
$3,565.30
Siemens
-
-
3VL7712-3AA36-0AA0
3VL7712-3AA36-0AA0
In Stock
From
$15,301.50
Siemens
-
-
3VL90008AQ60
3VL90008AQ60
In Stock
From
$402.59
Siemens
-
-
5SL4101-6
5SL4101-6
Limited Stock
From
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Siemens
6
230
5SL4216-8
5SL4216-8
Limited Stock
From
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Siemens
16
400
5SL6305-7
5SL6305-7
Limited Stock
From
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Siemens
4
400
5SN1-G10A
5SN1-G10A
In Stock
From
$14.01
Siemens
10
380
5SN1-SP-325
5SN1-SP-325
Limited Stock
From
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Siemens
25
-
5SN1325
5SN1325
In Stock
From
$13.90
Siemens
25
-
5SN1325-8F
5SN1325-8F
In Stock
From
$21.77
Siemens
25
380
5SN1NG4A
5SN1NG4A
In Stock
From
$28.52
Siemens
4
-
5SN2-301
5SN2-301
In Stock
From
$32.84
Siemens
1
-
5SN2-340
5SN2-340
In Stock
From
$56.69
Siemens
40
415
5SN2-350
5SN2-350
In Stock
From
$58.46
Siemens
50
415
5SN6325
5SN6325
In Stock
From
$176.30
Siemens
-
-
5SN7116-0KB30
5SN7116-0KB30
In Stock
From
$74.34
Siemens
16
415
5SN7120-0KB30
5SN7120-0KB30
In Stock
From
$27.06
Siemens
20
415
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.