Eaton JGX3125FAG Complete MCCB - UL Listed CSA Certified
Part Number: JGX3125FAG
Quick Summary
The Eaton JGX3125FAG complete molded case circuit breaker protects electrical power and control circuits with reliability in industrial panels. This three-pole unit is designed for 125 A operation in 600 Vac systems, featuring fixed thermal and adjustable magnetic trip to guard motors and power lines. Engineers often face challenges coordinating protection devices across panels, risking nuisance trips or insufficient fault clearance. The JGX3125FAG carries CSA Certified, UL Listed, and IEC Rated certifications, with CE marking for global compliance, reinforcing safety and interoperability. By aligning Series G performance with metric mounting and line/load terminals, it streamlines installation, reduces panel clutter, and supports scalable protection schemes for modernization projects.
Product Information
Extended Description
JGX3125FAG Eaton: Eaton Series G molded case circuit breaker, JG-frame, JG, Fixed thermal, adjustable magnetic trip, Three-pole, 125A, 600 Vac, 200 kAIC at 240 Vac, 200 kAIC at 480 Vac, 50 kAIC at 600 Vac, Line and load, Metric, 50/60 Hz, 80% rated
Product Name
Eaton Series G complete molded case circuit breaker
Catalog Number
JGX3125FAG
UPC
786685126678
Product Length/Depth
3.57 in
Product Height
4.13 in
Product Width
4.13 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
CE Marked
Certifications
CSA Certified UL Listed IEC Rated
Type
Complete breaker
Amperage Rating
125 A
Voltage rating
600 Vac
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
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 50 kAIC at 600 Vac 200 kAIC at 480 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
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
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 three-pole amperage rating with a JG frame design provides robust fault protection for motor circuits, delivering improved uptime and reduced wear on downstream components. Business impact: precise tripping preserves equipment while minimizing unplanned downtime; application: controls and power distribution in packaging, robotics, and machine-building lines. 600 Vac voltage rating across 50/60 Hz supports global applications, enabling a single MCCB to serve diverse markets and simplifying procurement. Impact: lowered inventory variety and faster sourcing; application: control panels and distribution boards in international facilities. 200 kAIC interrupt rating at 240 Vac and 480 Vac (and 50 kAIC at 600 Vac) boosts short-circuit resilience, reducing arc duration and safeguarding feeders. Impact: aligns with high-short-circuit environments; application: heavy machinery and process lines requiring strong protection. Line and load terminals with metric mounting hardware enable faster installation and secure terminal integrity. Impact: easier field wiring, compact footprint, and reliable clamping force; application: panel-building and equipment racks with tight spaces. Trip Type T185 with fixed thermal and adjustable magnetic trip supports selective coordination and motor protection strategies. Impact: precise coordination with upstream breakers and soft-start devices; application: servo drives and pumps where controlled motor protection is critical. Compliance and safety are reinforced by UL Listed, CSA Certified, IEC Rated, and CE Marked documentation, reducing procurement risk. Impact: streamlined audits and cross-border approvals; application: multinational manufacturing lines and OEM assemblies. Series G complete breaker design with line/load terminals and 80% rated capability ensures predictable performance under partial-load conditions. Impact: energy efficiency and consistent protection in 125 A circuits; application: control panels, machine automation, and distribution panels across industries.
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FAQs
Installation is streamlined by the metric mounting hardware and line/load terminals designed for Series G complete breakers. Ensure the panel supports three-pole 125 A protection and that the mounting footprint matches the JG frame. Use the provided documentation (catalogs and specs) to verify clearances and exact torque values for secure, code-compliant wiring.
The T185 trip type combines fixed thermal protection with an adjustable magnetic trip to provide reliable overload and short-circuit protection. This enables selective coordination with upstream devices and tailored protection for motor loads, reducing nuisance trips while maintaining fast fault clearance in line with industry standards.
Yes. It is rated for 125 A and 600 Vac, with a high interrupt rating suitable for motor protection and distribution circuits. Its 50/60 Hz compatibility and three-pole configuration make it an appropriate choice for control panels and machinery fed from 600 Vac power networks.
The JGX3125FAG carries CSA Certified, UL Listed, and IEC Rated certifications, plus CE Marking. These certifications confirm adherence to safety and performance standards across multiple regions, simplifying supplier qualification, installation audits, and cross-border procurement for global plants.
With a durable build, clear line/load terminals, and standard mounting, maintenance intervals are straightforward, reducing inspection time. The reliable trip system and compliant ratings minimize unplanned downtime, improving asset availability and lowering total cost of ownership for automation projects.