Eaton JGSDC3100FAG PV Guard Complete MCCB - UL489
Part Number: JGSDC3100FAG
Quick Summary
The Eaton JGSDC3100FAG PV Guard complete molded case circuit breaker protects PV systems by interrupting fault currents in solar installations. Engineers often struggle with selecting DC PV breakers that survive rapid transient events while maintaining safe coordination with upstream protection. UL 489 certification ensures recognized safety for molded case breakers in PV and AC grids, while the PVGuard platform provides integrated protection for solar arrays and utility interconnections. This model's three-pole design, DC/AC compatibility, and fixed thermal with adjustable magnetic trip deliver reliable, code-compliant protection with minimal nuisance trips. The combination of fast trip response, rugged panel visibility, and Eaton's warranty offers predictable performance and a lower total cost of ownership for commercial and utility-scale deployments.
Product Information
Extended Description
JGSDC3100FAG Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, JG-frame, JG, Fixed thermal, adjustable magnetic trip, Three-pole, 100A, 600 Vac, 250 Vdc, 85 kAIC at 240 Vac, 35 kAIC at 480 Vac, 18 kAIC at 600 Vac, Line and load, 50/60 Hz
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
JGSDC3100FAG
UPC
786685494241
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
100 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
85 kAIC at 240 Vac 18 kAIC at 600 Vac 35 kAIC at 480 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
Selling Policy 25-000 - Distribution and Control Products and Services
Three-pole JG frame design with line and load terminals enables balanced protection across all phases, reducing the risk of under- or over-tripping. This alignment simplifies panel wiring and supports clean, code-compliant installation in both new builds and retrofit projects. Applied in commercial and utility-scale PV deployments, where reliable phase protection is essential. 100 A rating with 600 Vac / 250 Vdc ratings provides broad compatibility and safer DC switching for PV circuits, reducing inventory needs and streamlining maintenance. Suitable for PV arrays, inverters, and DC distribution within solar facilities. Fixed thermal trip with adjustable magnetic trip (T185) improves selectivity and reduces nuisance trips during DC transients, protecting inverter inputs and downstream equipment. Ideal for string protection in 50/60 Hz networks. High interrupt ratings across voltages—85 kAIC at 240 Vac, 35 kAIC at 480 Vac, and 18 kAIC at 600 Vac—offer strong fault-current handling and system resilience, minimizing collateral damage in faults. Critical for grid-tied PV systems and storage interfaces. UL 489 certification confirms compliance for molded case protection devices, while PVGuard integration supports reliable solar protection in commercial, utility-scale, and industrial installations. Warranty of Eaton’s 25-000 policy adds business certainty and service continuity. Line and load terminals, lightweight 6.5 lb design, and 50/60 Hz compatibility simplify installation, retrofit, and service in standard electrical panels used for solar and mixed-load environments.
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FAQs
When installing the JGSDC3100FAG in new panels, verify the Line and Load terminals are properly aligned to the JG frame. Use the 100 A rating with 600 Vac and 250 Vdc to match your PV array and inverter specs, and ensure 50/60 Hz operation. Follow UL 489 guidelines for mounting torque and clearance, and plan for the T185 magnetic trip to achieve selective coordination with upstream protections.
The unit combines a 100 A rating with 250 Vdc PV rail capability and fixed thermal with adjustable magnetic trip, enabling safe DC fault interruption while maintaining selectivity. Its DC compatibility is complemented by three-pole protection, line-load configuration, and PVGard integration, which helps protect PV strings, inverters, and DC distribution in solar facilities.
Yes. The JGSDC3100FAG is rated for 600 Vac AC and 250 Vdc PV rail applications, providing coordinated protection for mixed AC/DC environments. Its 85 kAIC at 240 Vac, 18 kAIC at 600 Vac, and 35 kAIC at 480 Vac ratings support fault current handling across common PV and utility interconnection scenarios.
The JGSDC3100FAG carries UL 489 certification, a key standard for molded case circuit breakers used in electrical protection. This certification facilitates code compliance in commercial solar installations and simplifies contractor acceptance, OEM integration, and safety documentation for PV systems.
The combination of rapid, reliable trip performance, high interrupt ratings, and PVGard compatibility reduces nuisance trips and downtime, translating to lower maintenance costs and less equipment wear. Its robust protection across 600 Vac/250 Vdc and 3-pole design supports longer system uptime in commercial and utility-scale solar deployments.