Eaton JGS8125AAG Complete MCCB - UL Listed, IEC Rated
Part Number: JGS8125AAG
Quick Summary
The Eaton JGS8125AAG is a complete molded case circuit breaker designed for panel protection in industrial electrical systems. It helps engineers prevent nuisance trips by offering adjustable thermal and magnetic trip options for precise coordination. This Series G MCCB carries IEC Rated, CSA Certified, and UL Listed certifications, ensuring compliance across international panels and safety standards. In addition to protection, it supports metric mounting and line-and-load terminals for simplified installation. By choosing this breaker, electrical teams can improve uptime, reduce maintenance costs, and meet stringent regulatory requirements while maintaining compatibility with standard MCCB accessories and Eaton support tools.
Product Information
Extended Description
JGS8125AAG Eaton: Eaton Series G molded case circuit breaker, JG-frame, JG, Adjustable thermal, adjustable magnetic trip, Four-pole, 125A, 600 Vac, 85 kAIC at 240 Vac, 40 kAIC at 415 Vac, 35 kAIC at 480 Vac, 18 kAIC at 600 Vac, Line and load, Metric
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
JGS8125AAG
UPC
782114889169
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 CSA Certified UL Listed
Type
Complete breaker
Amperage Rating
125 A
Voltage rating
600 Vac
Trip Type
Adjustable thermal, adjustable magnetic
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
JG
Mounting hardware
Metric
Interrupt rating
35 kAIC at 480 Vac 18 kAIC at 600 Vac 85 kAIC at 240 Vac 40 kAIC at 415 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
125 A at 600 VAC four-pole JG frame with line and load terminals provides robust panel protection and simplifies installation, reducing wiring errors and commissioning time. The adjustable thermal and magnetic trip delivers precise coordination, lowering nuisance trips and extending motor life; this translates to higher productivity and fewer unscheduled downtime in production lines. Four-pole construction ensures proper neutral protection in multi-wire circuits, improving safety and compliance in controlled equipment environments. Interrupt ratings of 85 kAIC at 240 VAC, 40 kAIC at 415 VAC, 35 kAIC at 480 VAC, and 18 kAIC at 600 VAC give designers headroom for short-circuit events, supporting dependable power distribution in demanding applications. The compact JG frame and metric mounting hardware enable versatile panel layouts and easier retrofits in existing enclosures, while CE marking and global certifications simplify cross-border deployments. Compatible with Eaton MCCB accessories and service tools, it helps control panels achieve better selective coordination and lifecycle cost reduction.
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FAQs
For optimal installation, plan for four-pole wiring with line and load terminals and use metric mounting hardware to fit standard enclosures. Verify panel clearance and torque specifications, and allow space for the adjustable trip mechanism. Consider accessory compatibility with Eaton MCCB plug-ins and ensure mounting aligns with the JG frame to maintain correct cooling and regulatory clearance.
Key specs include a 125 A amperage rating, 600 VAC voltage rating, and four-pole configuration. Trip type is adjustable thermal and adjustable magnetic. Interrupt ratings are 85 kAIC at 240 VAC, 40 kAIC at 415 VAC, 35 kAIC at 480 VAC, and 18 kAIC at 600 VAC, providing solid fault protection across operating voltages.
Yes. The adjustable thermal and magnetic trip allows precise coordination with downstream protection devices, helping to prevent nuisance trips while ensuring rapid isolation of faulty motor circuits. Its four-pole design and Series G architecture support improved control panel selectivity, reducing downstream impacts and improving overall system reliability.
The JGS8125AAG carries UL Listed, IEC Rated, and CSA Certified marks, along with CE compliance. These certifications confirm compliance with global electrical protection standards, simplify cross-border procurement, and support safety and reliability requirements for industrial control panels and machinery applications.
Eaton provides a warranty under policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, follow manufacturer service guidelines, schedule periodic insulation and trip setting checks, and maintain a stock of common spares. Rely on Eaton service centers and product literature for updated diagnostic and replacement recommendations.