Eaton JGU4125FAG Complete MCB - UL Listed 600V
Part Number: JGU4125FAG
Quick Summary
Eaton JGU4125FAG complete molded case circuit breaker protects industrial control panels. In tight spaces and high-demand environments, panel protection and wiring can be a challenge; this MCCB offers reliable short‑circuit protection in a compact form. It carries IEC rated, UL Listed, and CSA Certified marks, with CE compliance and a rugged four‑pole Series G frame for 125 A at 600 Vac. For engineers and procurement teams, the combination of fixed thermal, adjustable magnetic trip, and metric mounting simplifies installation while meeting industry standards and improving lifecycle costs.
Product Information
Extended Description
JGU4125FAG Eaton: Eaton Series G molded case circuit breaker, JG-frame, JG, Fixed thermal, adj. magnetic trip, Four-pole, 125A, 600 Vac, 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, 50 kAIC at 600 Vac, Line/load, Metric, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
JGU4125FAG
UPC
786685127033
Product Length/Depth
3.57 in
Product Height
5.34 in
Product Width
5.34 in
Product Weight
8 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
CE Marked
Certifications
IEC Rated UL Listed CSA Certified
Type
Complete breaker
Amperage Rating
125 A
Voltage rating
600 Vac
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Protection
0% protected neutral pole
Rating
80% rated
Series
Series G
Terminals
Line and load
Frame
JG
Frequency rating
50/60 Hz
Mounting hardware
Metric
Interrupt rating
200 kAIC at 240 Vac 150 kAIC at 480 Vac 50 kAIC at 600 Vac
Number of poles
Four-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
High performance operating handles for Series G circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: Four‑pole, JG frame with line/load terminals delivers clean, predictable fault isolation and simplifies wiring in control panels and distribution boards. This reduces commissioning time and enhances panel reliability in machine builds and industrial automation applications. Feature → Business Impact → Application: Fixed thermal with adjustable magnetic trip (T185) enables precise short‑circuit protection and selective coordination, minimizing nuisance trips and protecting costly equipment such as motors and drives in 50/60 Hz systems. Feature → Business Impact → Application: High interrupt ratings—200 kAIC at 240 Vac, 150 kAIC at 480 Vac, 50 kAIC at 600 Vac—permit handling of high fault currents typical in manufacturing facilities and data centers, improving system uptime. Feature → Business Impact → Application: 125 A at 600 Vac with metric mounting and line/load terminals supports quick installation in standard panel rails and reduces hardware variety, boosting installation efficiency across OEMs. Feature → Business Impact → Application: Global compliance with CE Marked, UL Listed, and CSA Certified marks ensures traceable quality and regulatory acceptance for cross-border projects, supported by a one‑year warranty policy for risk reduction. These attributes collectively translate to lower lifecycle costs, easier maintenance, and greater peace of mind for mission‑critical applications.
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FAQs
The JGU4125FAG is designed for Series G molded case panels with metric mounting hardware and line/load terminals. Verify panel space for a four-pole device, secure mounting with metric hardware, and connect line and load conductors to the appropriate terminals. Ensure the supply is de-energized, consult the installation drawing, and follow CE/UL/CSA wiring practices for safe integration.
This breaker is rated for 125 A and 600 Vac, with a T185 trip type. It provides fixed thermal protection and adjustable magnetic trip, capable of interrupt ratings up to 200 kAIC at 240 Vac, 150 kAIC at 480 Vac, and 50 kAIC at 600 Vac, enabling selective coordination and robust fault handling in 50/60 Hz systems.
Yes. The four-pole, 125 A, 600 Vac rating, along with adjustable magnetic trip, supports motor protection and feeder circuits. Its Series G design and high interrupt ratings help manage motor start-up transients and protect drives, conveyors, and machine controls in typical manufacturing environments.
The JGU4125FAG is CE Marked and UL Listed with CSA Certification, and IEC Rated. These marks confirm conformance to international safety and performance standards, easing adoption for global projects and reducing regulatory risks in multi-region deployments.
Eaton provides a one-year warranty from installation or eighteen months from shipment (whichever comes first). Combined with a broad ecosystem of service centers and readily available replacement parts, this MCCB offers predictable maintenance costs, minimized downtime, and a favorable total cost of ownership in control panel applications.