Eaton JGSDC3125FAG PV Guard MCCB - UL 489, 125A

DC PV protection readiness: The JGSDC3125FAG uses a three-pole JG frame with line and load terminals and a fixed magnetic trip, delivering robust overcurrent protection for PV arrays and inverters. This arrangement helps prevent module damage and reduces unplanned downtime by reliably interrupting fault currents at the source. With a 125 A ampacity and the ability to operate at 600 Vac / 250 Vdc, it supports mixed AC/DC service in modern solar installations. High interrupt ratings for solar environments: The device lists 85 kAIC at 240 Vac, 40 kAIC at 415 Vac, 35 kAIC at 480 Vac, and 18 kAIC at 600 Vac, providing a wide safety margin against transient faults. That flexibility is critical when inverters, combiner boxes, and PV strings interact, ensuring reliable shutoff under fault conditions. This translates to improved equipment protection and safer maintenance windows. Installation efficiency and compatibility: The JG frame, metric mounting hardware, and line/load terminals simplify mounting and wiring in compact switchboards or enclosures. Its complete breaker construction reduces part count and supports quicker commissioning, while UL 489 certification confirms compliance with recognized safety standards. The compact footprint also enables closer panel packing for rooftop or utility-scale arrays. Operational reliability and service life: The T185 trip type delivers predictable, time-delayed magnetic operation suitable for systems with DC fault profiles, helping coordinate protection with PV inverters. A 125 A rating ensures scalable protection for mid-size PV arrays without over-selecting components. PVGard ecosystem readiness: This PVGuard solution integrates with Eaton's broader protection strategy, enabling easier component replacement, service planning, and ongoing system reliability for solar deployments.