Overview
The Ruijie / Reyee RG‑NIS‑PA120‑48 is an industrial-grade AC/DC DIN‑rail power supply delivering 48 V DC at up to 2.5 A (120 W). It accepts universal AC input (100–240 V nominal; operating 85–264 VAC) and many vendor pages report DC input support (120–370 V DC) using the same terminal. The unit includes active PFC, high efficiency (≈94% at 230 VAC reported) and comprehensive protection features. Note: Ruijie has announced this model as End‑of‑Sale (EOS) for international markets (1 July 2024). Plan for limited availability and check replacement recommendations.

• 48 V DC output, 120 W (2.5 A) max
• Universal AC input: 100–240 VAC nominal (operating 85–264 VAC, 47–63 Hz); vendor-listed DC input: 120–370 VDC
• Active PFC and high efficiency (~94% at 230 VAC reported)
• Protection: short‑circuit, over‑current (110–200% Io, self‑recover), over‑voltage (hiccup, limit ≲60 V), over‑temperature (thermal shutdown/self‑recover)
• 150% peak load capability for short bursts (~3 s) to handle inrush/PoE surges
• Compact DIN‑rail housing for industrial and network switch installations

Use cases
Suitable for powering industrial networking equipment, Reyee/Ruijie industrial switches and other DIN‑rail devices requiring a stable 48 V DC supply. Intended for commercial and industrial installations; installers should verify compatibility with connected devices and consider the replacement RG‑NIS‑PA120‑54 where appropriate.

Compliance & warranty
Meets IEC/UL/BS EN 62368 (vendor listed). Warranty: listed as 3 years in Ruijie support tables—please confirm exact warranty period with your Ruijie distributor or reseller prior to sale.

Safety & installation
Installation must be carried out by a qualified electrician or competent installer. Observe local regulations and wiring practices. Verify input selection (AC or DC) and ensure correct earthing. For accurate mechanical dimensions and detailed ratings, use the official Ruijie datasheet when creating technical documentation.