Eaton JGSDC3090FAG PV Guard MCCB - UL 489, 85 kAIC
Part Number: JGSDC3090FAG
Quick Summary
Eaton PV Guard complete molded case circuit breaker protects solar PV systems and DC power rails. Engineers often struggle to balance rapid fault isolation with space constraints in rooftop and ground-mounted PV installations. UL 489 certification underpins code-compliant protection, while the Series G design and JG frame support easy line/load wiring and field maintenance. With a 90 A rating and 50/60 Hz compatibility, this device handles mixed AC/DC protection without sacrificing safety. The compact footprint reduces panel congestion and supplier variety, delivering smoother procurement and faster maintenance cycles for solar facilities and hybrid DC/AC applications.
Product Information
Extended Description
JGSDC3090FAG 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, 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
JGSDC3090FAG
UPC
786685494395
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
18 kAIC at 600 Vac 35 kAIC at 480 Vac 85 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
Eaton Specification Sheet - JGSDC3090FAG
Eaton Specification Sheet - JGSDC3090FAG
90 A amperage rating aligns with common PV distribution loads, delivering protection without oversizing devices. This reduces conductor costs and avoids nuisance trips during normal operation, while ensuring reliable protection in three-pole protection for central inverters and string infeed panels. The 600 Vac / 250 Vdc voltage ratings enable cross-domain protection in mixed AC and DC PV systems, simplifying inventory by allowing a single device to protect both AC distribution and DC PV wiring, ideal where PV arrays connect directly to MCCB-protected feeders. The fixed thermal, adjustable magnetic trip (T185) delivers tailored protection, reducing nuisance trips while ensuring fast fault clearance in fault conditions, critical for PV systems with rapid current changes. Interrupt ratings of 18 kAIC at 600 Vac, 35 kAIC at 480 Vac, and 85 kAIC at 240 Vac raise safety margins and equipment protection under fluctuating grid conditions, especially in utility-tied PV plants. The Series G, JG frame, three-pole design with line and load terminals offers a compact form factor and straightforward installation at panel buses, improving serviceability and reducing installation time. With dimensions of 3.44 in depth, 7 in height, and 4.13 in width (weight 6.5 lb), it fits tight enclosures and simplifies retrofits. UL 489 certification and 50/60 Hz operation ensure compliance and operational versatility, supporting NEC-aligned installations and predictable maintenance cycles. Overall, this PVGuard breaker reduces total cost of ownership by combining robust protection with installation efficiency and inventory simplification.
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FAQs
Yes. The JGSDC3090FAG is a three-pole molded case circuit breaker rated for 600 Vac and 250 Vdc with line and load terminals, making it suitable for both AC distribution and DC PV protection. Its compact JG frame and 3-pole design simplify installation in PV inverters, combiner boxes, and main distribution panels.
Key specs include a 90 A amperage rating, 600 Vac / 250 Vdc voltage rating, TRIP type T185 with fixed thermal and adjustable magnetic protection, and interrupt ratings of 18 kAIC at 600 Vac, 35 kAIC at 480 Vac, and 85 kAIC at 240 Vac. It operates at 50/60 Hz, with line and load terminals for straightforward wiring.
Absolutely. The PVGard/Series G JG-frame MCCB is designed for PV protection, supports DC PV wiring up to 250 Vdc, and provides robust short-circuit withstand ratings. Its UL 489 certification reinforces suitability for solar installations, while its compact footprint aids in rooftop or compact-string configurations.
The breaker is UL 489 certified, which confirms compliance with the standard requirements for molded case circuit breakers used in protection schemes. This certification ensures safe operation, reliable interruption performance, and compatibility with NEC and electrical protection practices in PV and mixed DC/AC systems.
With a one-year warranty from installation or eighteen months from shipment, the device offers predictable coverage. Its durable construction, standardized trip characteristics, and common-terminal design simplify field servicing and spare-part compatibility, reducing downtime and inventory complexity while enhancing overall return on investment for PV protection hardware.