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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
MPA41F25W4420
MPA41F25W4420
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General Electric
2500
MPA41F25W4430
MPA41F25W4430
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General Electric
2500
MPA41F25W4440
MPA41F25W4440
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General Electric
2500
MPA41F25W4450
MPA41F25W4450
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General Electric
2500
MPA41M04
MPA41M04
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General Electric
400
MPA41M08
MPA41M08
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General Electric
800
MPA41M10
MPA41M10
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General Electric
1000
MPA41M12
MPA41M12
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General Electric
1250
MPA41M16
MPA41M16
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General Electric
1600
MPA41M20
MPA41M20
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General Electric
2000
MPA41M25
MPA41M25
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General Electric
2500
MPA41W04
MPA41W04
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General Electric
400
MPA41W08
MPA41W08
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General Electric
800
MPA41W10
MPA41W10
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General Electric
1000
MPA41W12
MPA41W12
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General Electric
1250
MPA41W16
MPA41W16
Limited Stock
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General Electric
1600
MPA41W20
MPA41W20
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From
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General Electric
2000
MPA41W25
MPA41W25
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General Electric
2500
MPA42F32
MPA42F32
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General Electric
3200
MPA42F3200010
MPA42F3200010
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General Electric
3200
MPA42F3200020
MPA42F3200020
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General Electric
3200
MPA42F3200030
MPA42F3200030
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General Electric
3200
MPA42F3200040
MPA42F3200040
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General Electric
3200
MPA42F3200050
MPA42F3200050
Limited Stock
From
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General Electric
3200

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.