Eaton JGHDC3175FAW PV Guard MCCB - 3-Pole 175A UL 489
Part Number: JGHDC3175FAW
Quick Summary
PV Guard DC PV circuit breaker is designed for solar energy systems to protect DC strings and inverters. For engineers, selecting a breaker that withstands DC fault conditions, minimizes wiring complexity, and fits compact PV layouts can be challenging. This Eaton unit delivers UL 489 certified protection in a three-pole JG-frame, complete breaker with fixed thermal and adjustable magnetic trip (T185), specifically suited for DC and PV applications. It supports 600 Vac and 250 Vdc, up to 175 A, and ships without terminals for flexible field installation. By consolidating protection into a single, code-compliant device, you reduce assembly time, simplify maintenance, and improve system reliability across the solar array.
Product Information
Extended Description
JGHDC3175FAW Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, JG-frame, JGHDC, Complete breaker, Fixed thermal, adjustable magnetic trip type, Three-pole, 175A, 600 Vac, 250 Vdc, Without terminals, Vdc
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
JGHDC3175FAW
UPC
786685494524
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
175 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
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 - JGHDC3175FAW
Eaton Specification Sheet - JGHDC3175FAW
Feature: PVGard complete molded case breaker combines DC protection and PV compatibility in a single device. Business impact: reduces panel footprint and wiring complexity, accelerating installation and improving maintainability. Application: ideal for three-pole protection in solar arrays and DC strings, compatible with PVGard ecosystem. Feature: Fixed thermal with adjustable magnetic trip (T185). Business impact: delivers targeted protection with predictable trip curves, lowering risk of nuisance trips and equipment damage. Application: critical DC protection for inverters, combiner boxes, and DC interfaces in PV systems. Feature: JG frame, complete breaker, three-pole; without terminals. Business impact: simplifies field installation and integration with standard bus bars and terminations, reducing field labor. Application: matches Eaton JG frame footprints in MCCB distribution setups. Feature: UL 489 certification. Business impact: ensures compliance with safety standards and facilitates procurement approvals from engineers and stakeholders. Application: suitable for code-compliant electrical protection across solar and industrial installations. Feature: 600 Vac / 250 Vdc, 175 A rating. Business impact: covers typical PV system voltages and current demands, delivering reliable protection and fast fault response. Application: protects PV arrays, inverters, and DC distribution in commercial and utility-scale facilities. Warranty: Eaton offers a one-year warranty from installation or eighteen months from shipment, reducing procurement risk and providing long-term reliability for solar protection strategies.
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FAQs
The JGHDC3175FAW is a three-pole DC protection device designed for PVGuard installations. Ensure mounting on a compatible JG frame panel, verify 600 Vac / 250 Vdc wiring clearances, and confirm the unit is installed without terminals as specified. Plan wiring routes to minimize DC arc exposure and allow for service access, while maintaining compliance with UL 489 requirements.
T185 refers to a fixed thermal, adjustable magnetic trip. This combination provides stable, time-coordinated protection for DC faults, enabling fast disconnection under overcurrent while avoiding nuisance trips during normal inrush. In PV configurations, this helps guard DC strings and inverters from fault conditions without compromising system uptime.
Yes. The JGHDC3175FAW is explicitly designed for PVGuard DC protection, with three poles, a 175 A rating, and a 600 Vac / 250 Vdc rating. It is UL 489 certified and ships as a complete breaker without terminals, offering straightforward integration into PV distribution schemes and inverter interfaces.
The JGHDC3175FAW carries UL 489 certification, which validates safety and performance of molded case circuit breakers. For solar projects, UL 489 compliance supports NEC requirements, equipment approvals, and smoother procurement processes with electrical contractors and engineers.
The unit’s UL 489 certification and rugged DC protection reduce downtime and maintenance costs by improving reliability in PV systems. It includes a defined warranty (one year from installation or 18 months from shipment), which mitigates initial procurement risk and enhances total cost of ownership for solar protection upgrades.