Eaton JGHDC3250FAG PV Guard Solar MCCB - UL 489
Part Number: JGHDC3250FAG
Quick Summary
Eaton JGHDC3250FAG PV Guard Solar molded case circuit breaker protects solar power systems with high-current reliability. Engineers often face protection gaps in PV arrays when temperatures fluctuate and wiring configurations change, risking equipment damage and downtime. UL 489 certification underpins safety and compliance, while the three-pole JG frame, 600 Vac/250 Vdc ratings, and T185 trip type deliver robust, predictable protection for PV installations. This solution also aligns with PVGuard ecosystem needs and supports streamlined installation, serviceability, and documentation in renewable-energy projects.
Product Information
Extended Description
JGHDC3250FAG Eaton: Series G JG-frame molded case circuit breaker, 250A, Three-pole, With terminals, Fixed thermal, adjustable magnetic, Cu wire, With collars, JGHDC type
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
JGHDC3250FAG
UPC
786685494487
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
250 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
JG
Class
Vdc
Mounting hardware
Metric
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 - JGHDC3250FAG
Eaton Specification Sheet - JGHDC3250FAG
Feature → Business Impact → Application: The JGHDC3250FAG is a three-pole, 250 A molded case circuit breaker with a complete breaker assembly and line/load terminals. This configuration delivers high-current protection with reliable trip performance, reducing the risk of cascading faults in large PV arrays and improving system uptime in distributed solar deployments. Application: Suitable for PV infeed sections and inverter protection in solar farms, where consistent protection translates to lower maintenance costs and improved field reliability. Feature → Business Impact → Application: Fixed thermal and adjustable magnetic trip (T185) provides precise coordination with DC and AC fault conditions, minimizing nuisance trips during transients and temperature swings. Application: Optimizes protective coordination with adjacent devices, enabling safer commissioning and easier fault isolation. Feature → Business Impact → Application: 600 Vac / 250 Vdc ratings and JG frame compatibility support both AC and DC PV circuits, simplifying design and stocking. Application: Streamlines panel layouts, reduces part diversity, and accelerates installation in modern PV rooftops and utility-scale projects. Feature → Business Impact → Application: Metric mounting hardware and line/load terminals simplify field mounting and terminations, reducing install time and potential wiring errors. Application: Improves on-site efficiency and consistency across multiple enclosures in solar portfolios. Feature → Business Impact → Application: UL 489 certification provides industry-standard safety compliance, reinforcing customer confidence in protection schemes for critical solar assets. Application: Enables auditors and operators to meet regulatory requirements with documented protection. Feature → Business Impact → Application: PV Guard / Solar branding and product support aids in clearer system labeling, commissioning checks, and maintenance planning. Application: Supports lifecycle management and easier troubleshooting in solar plants.
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FAQs
The JGHDC3250FAG uses metric mounting hardware and includes line and load terminals. It is designed for standard three-pole panel installations with compatible bus bars and enclosure spaces. Verify enclosure clearance and torque spec per the Eaton datasheet to ensure proper mounting and termination.
Key ratings include 250 A amperage, voltage ratings of 600 Vac and 250 Vdc, and a T185 trip type for adjustable magnetic and fixed thermal protection. It is a three-pole JG frame device with line/load terminals, suitable for both AC and DC PV circuits in protective schemes.
Yes. The JGHDC3250FAG is part of Eaton's PV Guard / Solar family, engineered specifically for solar installations. It provides reliable overcurrent protection for PV arrays and inverters, supports PV string protection strategies, and integrates with PVGuard documentation and protection schemes.
This model is UL 489 listed, confirming compliance with recognized safety standards for molded case circuit breakers used in commercial and industrial power systems. Always verify the specific regional certifications required for your installation in the project scope.
The device’s rugged three-pole design, reliable trip coordination, and UL 489 certification contribute to reduced failure-related downtime and easier regulatory compliance. The one-year warranty (or 18 months from shipment) provides a predictable after-sales window, while installation efficiency and standardized mounting hardware can lower labor costs and stocking complexity.