Eaton JGHDC3090FAG PV Guard Solar MCCB - UL 489
Part Number: JGHDC3090FAG
Quick Summary
PV Guard molded case circuit breaker from Eaton, JGHDC3090FAG, protects solar power systems by reliably interrupting DC and AC faults. Engineers face challenges aligning DC ratings with PV inversion, while keeping wiring simple and compliant with safety standards. UL 489 certification underpins reliable performance in PV protection scenarios. This 90 A, 3-pole JG frame MCCB offers fast fault isolation, easy field installation, and robust compatibility for Series G PV protection. Designed for PVGard compatibility, this MCCB simplifies integration with inverters, combiner boxes, and utility-grade distributions. Use cases include rooftop solar, commercial PV installations, and utility-scale solar farms seeking reliable protection and fast serviceability.
Product Information
Extended Description
JGHDC3090FAG Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, JG-frame, JG, Fixed thermal, adjustable magnetic trip, Three-pole, 90A, 600 Vac, 250 Vdc, 100 kAIC at 240 Vac, 65 kAIC at 480 Vac, 25 kAIC at 600 Vac, Line and load, 50/60 Hz
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
JGHDC3090FAG
UPC
786685494579
Product Length/Depth
3.44 in
Product Height
7 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
90 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T185
Circuit breaker type
JG
Circuit breaker frame type
Complete breaker
Series
Series G
Terminals
Line and load
Frame
JG
Frequency rating
50/60 Hz
Interrupt rating
65 kAIC at 480 Vac 25 kAIC at 600 Vac 100 kAIC at 240 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
PVGard solar circuit breakers technical data sheet
PVGard solar circuit breakers technical data sheet
Feature: DC/AC protection with a 90 A rating and 600 Vac / 250 Vdc capability. Business Impact: Enables safe, fast fault interruption across both PV DC circuits and AC grid interfaces, reducing the risk of arc faults and equipment damage. Application: Ideal for rooftop and commercial PV systems, where mixed voltage protection is required in a compact MCCB. Feature: Fixed thermal, adjustable magnetic trip (T185). Business Impact: Provides precise coordination to minimize nuisance trips while offering selective protection during faults. Application: Inverter interfaces and PV array protection where trip settings must match system protection curves. Feature: UL 489 listing with Series G / JG frame design. Business Impact: Ensures regulatory compliance and seamless integration within Eaton-specified assemblies, panels, and control cabinets. Application: New builds and retrofits in commercial and utility PV protection schemes. Feature: Line and load terminals in a three-pole design. Business Impact: Simplifies wiring, reduces installation time, and supports clean separation of supply and load in three-phase PV systems. Application: PV string terminations, inverter feeders, and distribution panels. Feature: High interrupt ratings—100 kAIC at 240 Vac, 65 kAIC at 480 Vac, 25 kAIC at 600 Vac. Business Impact: Delivers robust fault clearance, enhancing system uptime and protecting downstream equipment under grid faults. Application: Grid-tied PV installations with higher fault current potential. Feature: Compact footprint and weight—3.44 in L, 7 in H, 4.13 in W; 6.5 lb. Business Impact: Facilitates installation in constrained spaces without compromising protection performance. Application: Rooftop enclosures and compact control panels where space is at a premium. Feature: Warranty and service terms. Business Impact: Provides documented support; ease of maintenance planning reduces long-term ownership costs. Application: All installations requiring predictable service availability and protection parity with Eaton components.
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FAQs
Yes. The JGHDC3090FAG is a three-pole JG frame molded case circuit breaker with line and load terminals, designed for 50/60 Hz systems. It delivers 90 A at 600 Vac / 250 Vdc and UL 489 certification, making it suitable for three-phase PV inverters, feeders, and distribution panels in rooftop or commercial PV installations.
Key ratings include 90 A amperage, 600 Vac / 250 Vdc voltage ratings, fixed thermal and adjustable magnetic trip (T185), and 100 kAIC at 240 Vac with 65 kAIC at 480 Vac and 25 kAIC at 600 Vac. These specs inform protective coordination, inverter surge handling, and safe fault clearance for grid-tied PV systems.
Install the MCCB on the PV inverter feeder or main distribution path within a compliant panel or enclosure. Its line/load terminals support straightforward wiring. Routine maintenance should verify trip settings, inspect for signs of wear, and confirm UL 489 certification alignment; the 1-year warranty from installation or 18 months from shipment supports service planning.
This product is UL 489 listed, a widely recognized standard for molded case circuit breakers. The listing verifies construction, performance, and safety under defined conditions, helping to satisfy national electrical codes and utility protection requirements in PV installations.
By delivering reliable fault isolation and robust protection, this MCCB minimizes unplanned downtime and equipment damage in PV systems, improving overall uptime and asset longevity. The included warranty and compatibility with Eaton PVGard accessories reduce lifecycle maintenance costs and simplify procurement and service planning.