Eaton JGS3125FAGA1 Molded Case Circuit Breaker - UL Listed
Part Number: JGS3125FAGA1
Quick Summary
Eaton JGS3125FAGA1 molded case circuit breaker is a reliable protection device for industrial power distribution and control panels. In demanding machines and panel builds, nuisance trips and miscoordination cost uptime and maintenance time. UL Listed certification ensures safety and reliability, and Eaton can confirm additional certifications on request. This three-pole MCCB features fixed thermal protection with an adjustable magnetic trip (T185), Line and load terminals, and is designed for 50/60 Hz service. Its rugged construction supports compact panel layouts and easy field wiring, delivering clear business value through improved protection coordination and reduced downtime in critical processes.
Product Information
Extended Description
JGS3125FAGA1 Eaton: Eaton Series G molded case circuit breaker, JG-frame, JG, Fixed thermal, adjustable magnetic trip, Three-pole, 125A, 600 Vac, 85 kAIC at 240 Vac, 35 kAIC at 480 Vac, 18 kAIC at 600 Vac, Line and load, 1A-1B w/ right pigtail, 50/60 Hz
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
JGS3125FAGA1
UPC
786685928722
Product Length/Depth
9.25 in
Product Height
5 in
Product Width
5 in
Product Weight
6 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
Contact Manufacturer
Certifications
UL Listed
Type
Fixed adjustable
Amperage Rating
125 A
Voltage rating
600 Vac
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Auxiliary switch
1A-1B with right pigtail
Series
Series G
Terminals
Line and load
Frame
JG
Frequency rating
50/60 Hz
Interrupt rating
85 kAIC at 240 Vac 35 kAIC at 480 Vac 18 kAIC at 600 Vac
Number of poles
Three-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
NG and ND-Frame molded case circuit breakers
NG and ND-Frame molded case circuit breakers
NG and ND-Frame molded case circuit breakers
125 A amperage rating at 600 Vac provides robust protection for high-current circuits, reducing equipment damage and downtime while enabling reliable power distribution in heavy-load applications. This is a Series G, JG-frame complete breaker with a fixed thermal, adjustable magnetic trip (T185) that supports precise coordination; the result is fewer nuisance trips and better selective protection in multi‑circuit panels. The three-pole configuration with line and load terminals supports true three-phase protection for motors and machinery, improving efficiency and safety in industrial environments. The auxiliary switch 1A-1B with a right pigtail enables remote signaling and interlock possibilities, enhancing control and automation reliability. With 50/60 Hz compatibility and a 9.25 inch depth, 5 inch height and width footprint, installation is straightforward in standard MCCB enclosures, optimizing panel space without compromising performance. Interrupt ratings of 85 kAIC at 240 Vac, 35 kAIC at 480 Vac, and 18 kAIC at 600 Vac ensure fast, safe fault interruption in diverse supply conditions, supporting compliance with safety standards while driving lower maintenance costs over the life of the installation. UL Listed certification and the Series G design reinforce reliability for mission-critical applications such as machine control panels, process lines, and distribution boards, while the rugged construction helps withstand industrial environments. These features collectively deliver measurable improvements in protection coordination, energy efficiency, and overall system uptime for panel builders and maintenance teams seeking dependable MCCB performance.
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FAQs
This unit is designed for Eaton Series G molded case circuit breakers with the JG frame. It uses line and load terminals and fits standard MCCB enclosures, suitable for 50/60 Hz power systems and three-phase applications in industrial panels.
Amperage rating is 125 A with a voltage rating of 600 Vac. The interrupt ratings are 85 kAIC at 240 Vac, 35 kAIC at 480 Vac, and 18 kAIC at 600 Vac. It features fixed thermal protection and an adjustable magnetic trip (T185) for precise overcurrent protection.
Yes. The JGS3125FAGA1 provides three-pole protection, adjustable magnetic trip to accommodate motor starting currents, and an auxiliary switch for remote signaling, making it well-suited for motor control centers and machine panels.
The breaker is UL Listed, ensuring compliance with standard safety requirements. Eaton can confirm additional certifications on request, and the product documentation provides the relevant approval references for your compliance needs.
Warranty follows Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. Breaker service centers and authorized distributors provide ongoing support, spare parts, and replacements as needed.