Eaton JGEDC3125FAW PV Guard MCCB - UL 489, 125 A, 600 Vac
Part Number: JGEDC3125FAW
Quick Summary
Eaton PV Guard JGEDC3125FAW is a solar-ready molded case circuit breaker designed for PV protection and DC/AC switching in commercial solar installations. Engineers often struggle to select a device that safely handles both 600 Vac AC and 250 Vdc DC circuits while delivering reliable overcurrent protection. With UL 489 certification and a robust JG frame, this breaker provides proven safety compliance and dependable performance under PV fault conditions. Its fixed thermal and adjustable magnetic trip, combined with a three-pole configuration, supports scalable PV arrays and streamlines installation within Eaton’s MCCB ecosystem. By choosing this solution, projects gain reduced downtime, improved system reliability, and a clearer path to regulatory compliance in solar protection strategies.
Product Information
Extended Description
JGEDC3125FAW Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, JG-frame, JG, Complete breaker, Fixed thermal, adjustable magnetic trip type, Three-pole, 125A, 600 Vac, 250 Vdc, 35 kAIC at 600 Vac, Without terminals, Vdc
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
JGEDC3125FAW
UPC
786685494142
Product Length/Depth
3.57 in
Product Height
4.13 in
Product Width
4.13 in
Product Weight
6.5 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.
Certifications
UL 489
Amperage Rating
125 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Terminals
Without terminals
Frame
JG
Class
Vdc
Interrupt rating
35 kAIC at 600 Vac
Number of poles
Three-pole
PVGard solar circuit breakers product aid
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Value of Circuit Breakers for PV Systems and Eaton PVGard Solar Circuit Breakers
Eaton Specification Sheet - JGEDC3125FAW
Eaton Specification Sheet - JGEDC3125FAW
125 A amperage rating delivers appropriate protection for mid-size PV inverters and feeder circuits, reducing conductor damage and downtime while enabling precise coordination with upstream protection. This feature translates to lower maintenance costs and safer disconnection in fault events for PV systems that experience transient overcurrents during cloud transients or switching. The 3-pole, JG frame design ensures balanced phase protection and straightforward integration into standard MCCB enclosures, supporting clean, code-compliant installations in commercial solar projects. The 600 Vac / 250 Vdc voltage rating allows simultaneous AC mains and DC PV-side protection, simplifying interconnection schemes and diminishing the need for separate DC MCCBs. A 35 kAIC interrupt rating at 600 Vac provides aggressive fault clearing for high-fault scenarios, enhancing system safety and reducing arc exposure during faults. The T185 trip type offers predictable, industry-standard response, helping engineers meet fast-clearing requirements for PV arrays. Finally, the absence of terminals affords installation flexibility when pairing with compatible lugs or bus assemblies, enabling compact, cost-effective wiring and simplified field assembly in constrained electrical rooms. Compliance with UL 489 reinforces confidence in safety, reliability, and maintenance planning for PV protection devices while supporting long-term asset performance and predictable ROI. In practice, this MCCB harmonizes with PVGard components to deliver a cohesive, high-performance protection strategy for solar installations, contributing to improved system uptime and regulatory alignment in utility-scale and commercial projects.
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FAQs
The JGEDC3125FAW uses a three-pole JG frame designed for standard MCCB enclosures and supports integration with compatible lugs or bus assemblies, enabling straightforward wiring in commercial solar installations. It is sized for 125 A applications and accommodates both AC and DC protection needs in a single device, reducing wiring complexity and space requirements on the panelboard.
This breaker is rated for 600 Vac and 250 Vdc, with a 35 kAIC interrupt rating at 600 Vac, delivering robust fault termination across both AC and DC domains. The T185 trip mechanism provides predictable response times, ensuring rapid disconnection during fault events and helping to meet PV system protection standards.
Yes. With a 125 A rating, three-pole configuration, and DC-rated capability (250 Vdc), the JGEDC3125FAW is suitable for protecting DC PV strings and related components while coordinating with AC protections downstream. The absence of terminals means it relies on compatible external connections within a protected enclosure for flexible DC wiring layouts.
The JGEDC3125FAW is UL 489 certified, ensuring compliance with recognized safety standards for molded case circuit breakers used in protection and control applications. This certification supports reliability expectations, field acceptance, and ongoing maintenance planning in industrial and electrical installations.
Eaton provides a standard warranty policy of one year from installation or eighteen months from shipment, whichever occurs first. For PV protection, this translates to predictable coverage during initial commissioning and early operation, helping justify lifecycle maintenance planning, spare-part readiness, and total cost of ownership assessments for solar projects.