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Insulated Case Circuit Breaker

For circuit breaker applications in commercial and industrial power distribution systems, insulated case circuit breakers are among the most critical components for reliable overcurrent protection and system safety. Insulated case circuit breakers provide adjustable trip settings and high interrupting capacity while offering compact installation in panelboards and switchboards. Electrical.com carries an extensive selection of insulated 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, industrial facilities, data centers, and healthcare infrastructure applications.
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Part Number
PRICE
Manufacturer
Amperage
MS31W08
MS31W08
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General Electric
800
MS31W08-A
MS31W08-A
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General Electric
800
MS31W10
MS31W10
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General Electric
1000
MS31W10-A
MS31W10-A
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General Electric
1000
MS31W12
MS31W12
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General Electric
1250
MS31W16
MS31W16
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General Electric
1600
MS31W16-A
MS31W16-A
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General Electric
1600
MS31W20
MS31W20
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General Electric
2000
MS31W25
MS31W25
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General Electric
2500
MS32F32
MS32F32
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General Electric
3200
MS32F32-A
MS32F32-A
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General Electric
3200
MS32W25
MS32W25
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General Electric
2500
MS32W25-A
MS32W25-A
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General Electric
2500
MS32W32
MS32W32
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General Electric
3200
MS32W40
MS32W40
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General Electric
4000
MS4L2F40-A
MS4L2F40-A
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General Electric
4000
MS4L2M32-A
MS4L2M32-A
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General Electric
3200
TPS203Y20E2
TPS203Y20E2
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General Electric
2000
175029349200102
175029349200102
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General Electric
3000
GA32M1XXXXX2XXXL3XX4
GA32M1XXXXX2XXXL3XX4
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General Electric
3200
SHB1G111A
SHB1G111A
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General Electric
200
SHB1G111B
SHB1G111B
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General Electric
200
SHB1G111C
SHB1G111C
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General Electric
200
SHB1G112A
SHB1G112A
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General Electric
200

Electrical.com stocks the largest inventory of insulated case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified circuit breakers available for immediate shipment. From low voltage to medium voltage applications, we have the insulated case breakers you need when others say no. Our comprehensive insulated case circuit breaker inventory spans all amperage ratings, voltage classes, and frame sizes 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 insulated case circuit breakers serve critical applications across industrial power distribution systems, manufacturing facilities, commercial buildings, data centers, utility substations, process control installations, and heavy industrial equipment.


Whether you're maintaining legacy electrical systems with obsolete insulated case breaker models or sourcing current production breakers for new installations and upgrades, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need insulated 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.