Eaton LGHDC3500FAW PV Guard Solar MCCB - 65 kAIC
Part Number: LGHDC3500FAW
Quick Summary
PV Guard Solar MCCB is a complete molded case circuit breaker designed to protect PV arrays and the associated DC/AC circuits. This Eaton LGHDC3500FAW model addresses the challenge of reliable protection in dense solar installations by combining high interrupt rating with precise tripping. UL 489 certification underpins safety and compatibility in commercial and utility-scale PV systems. By leveraging the LG frame and three-pole configuration, it delivers coordinated protection across feeders while fitting common enclosure footprints. For buyers, this enables standardization, easier maintenance, and faster commissioning in PV projects, with strong protection margins and long-term reliability.
Product Information
Extended Description
LGHDC3500FAW Eaton: Eaton Series G DC/PvGard complete molded case circuit breaker, LG-frame, LG, Complete breaker, Fixed thermal, adjustable magnetic trip type, Three-pole, 500A, 600 Vac, 65 kAIC at 600 Vac, Without terminals, Vdc
Product Name
Eaton PV Guard / Solar complete molded case circuit breaker
Catalog Number
LGHDC3500FAW
UPC
786685479811
Product Length/Depth
5.48 in
Product Height
5.48 in
Product Width
5.48 in
Product Weight
13.5 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
500 A
Voltage rating
600 Vac
Trip Type
T185
Circuit breaker type
LG
Circuit breaker frame type
Complete breaker
Terminals
Without terminals
Frame
LG
Class
Vdc
Interrupt rating
65 kAIC at 600 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
LG frame construction with a 500 A, 600 Vac rating provides robust protection for large PV strings and DC circuits, supporting higher fault-current handling and reducing the need for multiple devices, which improves system reliability and reduces installation complexity. The trip type T185 combines fixed thermal with adjustable magnetic trip, enabling stable coordination with PV inverters and rapid fault interruption across feeders and cabinets, minimizing damage and downtime. Three-pole, complete breaker design (LG frame) offers consistent protection profiles and simplifies integration into standard enclosure footprints, while the absence of terminals means you source compatible lugs and connectors to match your install, improving reliability and ease of replacement. UL 489 certification ensures compliance and safety for PV protection schemes, while the included warranty terms (Eaton policy 25-000) provide lifecycle assurances. This product is well-suited for commercial and utility-scale PV projects seeking dependable, code-compliant protection with predictable maintenance and support from a single supplier.
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FAQs
LGHDC3500FAW ships without terminals, so you must specify compatible lugs or terminals per UL 489 guidelines. Install in an appropriate LG frame enclosure with proper bus bar spacing, torque settings, and secure mounting. Ensure enclosure ratings match the environment and that the trip unit (T185) remains accessible for field settings.
The unit is rated at 500 A and 600 Vac, with an interrupt capacity of 65 kAIC at 600 Vac. It uses a three-pole LG frame and a trip type of T185, suitable for protection of PV arrays and feeders, both on DC and AC sides, under UL 489.
Yes, LGHDC3500FAW is designed for the LG frame and integrates with Eaton PVGard protection schemes. It coordinates with other LG frame devices, supports a fixed thermal with adjustable magnetic trip, and fits standard MV/low-voltage enclosures used in PV protection cabinets, aiding consistent protection across the system.
Yes, LGHDC3500FAW is UL 489 certified. It provides a 65 kAIC interrupt rating at 600 Vac, three-pole operation, and is intended for reliable overcurrent protection within PV systems and other electrical protection contexts.
Warranty follows Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For ongoing reliability, perform periodic inspection, torque checks on mounting hardware, and verify compatibility with lugs and enclosure during routine maintenance and after any field modifications.