Introduction: Meet the Ruijie RG-NIS-PA240-48
The Ruijie (Reyee) RG-NIS-PA240-48 is a compact, industrial-grade DIN-rail AC/DC power supply designed primarily to power networking equipment such as PoE and industrial Ethernet switches. With a regulated 48 V DC output at up to 5 A (240 W), dual-use AC/DC input on the same terminal, active power factor correction (PFC), and multiple protection modes, this module targets demanding installations in factories, transportation systems, utilities and other harsh environments. It is sold in the industrial power supplies category and is commonly offered around a suggested price of $149.99 with typical reseller warranties of three years (confirm with supplier).
Key features at a glance
- 48 V DC output at 5 A (240 W)— suitable for network devices and PoE-capable switches when combined with local PoE injectors or integrated switch designs.
- Dual-use input— accepts AC 85–264 VAC or DC 120–370 V DC on the same input terminal, simplifying installations that may use either supply type.
- Active PFC and high efficiency— approximately 94% efficiency at 230 VAC reduces heat and lowers operating costs; active PFC improves mains compatibility and reduces harmonic distortion.
- Robust protection suite— short-circuit, over-current, over-voltage and over-temperature protections with automatic recovery/hiccup behaviour and 150% peak capability for short startups.
- DIN-rail mounting and compact form— front-facing connectors, adjustable output trimmer and a small footprint make rack and cabinet integration straightforward.
Detailed specifications and benefits
The RG-NIS-PA240-48 combines practical mechanical design with electrical performance features that suit industrial projects. Below is a consolidated view of its most relevant specifications and what they mean in real deployments.
- Output voltage and current:48 V DC at up to 5 A (240 W). This steady, regulated output is well matched to networking gear that requires 48 V rails or external PoE converters.
- Dual DC outputs and trimmer:Dual outputs allow feeding two loads or simplifying wiring to multiple devices; an adjustable output trimmer makes fine tuning the voltage possible to match sensitive equipment tolerances.
- Peak capability:150% for 3 seconds supports transient startup currents from heavy loads such as switch backplanes or PoE port bursts without tripping immediately.
- Dual-use input range:AC 85–264 VAC (50/60 Hz) or DC 120–370 V DC on the same terminal. This flexibility reduces inventory complexity for installers working across sites with different supply types.
- Active PFC:Improves current waveform and lowers harmonic distortion; important for installations with strict power-quality requirements.
- Efficiency:Around 94% at 230 VAC minimizes wasted energy and heat generation, which is especially useful inside small enclosures or constrained cabinets.
- Comprehensive protections:Short-circuit, over-current, over-voltage and over-temperature features protect connected equipment and the supply itself. The self-recovery/hiccup modes mean the unit will attempt to restart after transient faults rather than permanently shutting down.
- Thermal and environmental ratings:Operating from −40 °C to +70 °C and storage to +85 °C, with high humidity tolerance, the unit is suited to harsh industrial environments.
- Standards:Design targets reported against IEC/UL/BS EN 62368 and related safety families — installers should verify certification for their region and application.
Use cases and scenarios where the product excels
The RG-NIS-PA240-48 is purpose-built for network infrastructure in industrial settings. Typical scenarios include:
- Industrial network closets:Replacing or supplementing built-in switch power supplies in machine rooms where a compact DIN-rail module is preferred.
- Transportation and utilities:Where DC supplies are common (e.g., 110–370 V DC battery or rectified bus), the units dual-use input simplifies deployment without needing different parts for AC vs. DC sites.
- Factory automation:Feeding Ethernet switches, remote I/O enclosures and communications gateways that demand reliable 48 V rails and can experience startup inrush currents.
- OEM integration:Integrators building control cabinets and field enclosures benefit from the compact form factor, front-facing connectors and adjustable voltage trimmer.
- Field replacement and spares:A direct-fit DIN-rail module is handy when replacing failed supplies during maintenance windows; however note the End-of-Sale status and plan spares accordingly.
Comparisons with similar products
When choosing a DIN-rail power supply for networking equipment, buyers typically compare output, input flexibility, protections, efficiency and physical footprint. The RG-NIS-PA240-48 stacks up in several ways:
- Versus basic fixed AC-only DIN-rail supplies:The RG-NIS-PA240-48s dual AC/DC input gives it an edge where DC sources exist. Many basic supplies only accept AC and would require additional conversion hardware on DC-powered sites.
- Versus higher-power modular PSUs:Higher-power or modular units may offer greater headroom but come at larger size, higher cost and often no dual-use terminal. The Ruijie product targets mid-power networking applications where 240 W is adequate and space is limited.
- Versus specialized PoE budget supplies:Dedicated PoE power supplies or midspans may include per-port PoE management; the RG-NIS-PA240-48 is a general 48 V supply and is best paired with PoE-capable switches or injectors rather than replacing a managed PoE system by itself.
- Reliability and protections:Its hiccup/self-recovery behaviour and 150% short-term peak handling bring it closer to professional-grade industrial power supplies than consumer-grade units that may simply trip and require manual reset.
In short, for projects that need a compact, efficient 48 V rail with ACDC flexibility and good transient handling, the RG-NIS-PA240-48 is competitive. For higher total power, dedicated PoE management or hot-swappable modular systems, other product classes may be more appropriate.
Customer feedback and testimonials
Public, attributed reviews for specific industrial modules are often limited. However, installer and reseller commentary around products like the RG-NIS-PA240-48 typically highlights a few recurring themes:
- Ease of installation:Installers appreciate the DIN-rail format, front-facing connectors and compact size for tight cabinets.
- Input flexibility:Engineers report fewer part-number mistakes and easier cross-site compatibility thanks to the shared AC/DC terminal.
- Thermal performance:High reported efficiency reduces heat in enclosed cabinets, extending service life for both the power supply and nearby electronics.
- Concern over lifecycle:With the End-of-Sale announcement (25 Aug 2024), larger projects or long-term maintenance plans need to source spares or evaluate replacement models to ensure long-term support.
If you are buying for a production deployment, request test units from your supplier and confirm the precise warranty and certification paperwork for your region.
Practical notes: safety, warranty and End-of-Sale
Safety is paramount when working with mains and high-voltage DC. The RG-NIS-PA240-48 is intended for installation by qualified electricians. Always isolate mains power, confirm wiring polarity when using DC inputs, and ensure adequate ventilation. Resellers commonly list a three-year warranty but confirm the exact coverage and RMA process at purchase. Also note the vendor announced End-of-Sale on 25 Aug 2024; for long-term projects, secure spare units or identify replacement parts early.
Conclusion: Why choose the RG-NIS-PA240-48?
The Ruijie RG-NIS-PA240-48 is a practical choice for networking-focused industrial power needs where a compact, efficient, and flexible 48 V rail is required. Its dual AC/DC input removes installation ambiguity across sites; active PFC and high efficiency reduce operating costs and thermal stress; and its protection modes and short-term peak capability make it tolerant of switch and PoE startup conditions. While it is not a managed PoE system on its own and is now End-of-Sale (so plan spares), it remains a solid option for OEMs, integrators and installers who need a reliable DIN-rail 48 V supply for mid-power network equipment.
Before purchase, verify the units certification status for your jurisdiction, confirm warranty terms with your supplier, and test compatibility with the specific network devices in your installation. For many industrial and transportation applications the RG-NIS-PA240-48 will deliver a balanced blend of performance, protection and installation convenience.
