Mean Well NDR-480-48 480W 48V DIN Rail Power Supply | Replacement, Equivalent & Selection Guide
The Mean Well NDR-480-48 is a high-efficiency, 480W single-output DIN rail-mount power supply delivering a stable 48 VDC output. Designed for industrial control panels, PLC systems, and automation cabinets, it combines compact form factor with robust protection features. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | NDR-480-48 |
| Brand | Mean Well |
| Series | NDR |
| Output Power | 480W (max) |
| Output Voltage | 48 VDC (adjustable 43.2–52.8V) |
| Output Current | 10A |
| Input Voltage | 90–264 VAC / 127–370 VDC |
| Input Frequency | 47–63 Hz |
| Efficiency (typ.) | ≥ 91% |
| Ripple & Noise | 200 mV p-p (max) |
| Hold-up Time | ≥ 20 ms at full load |
| Mounting | DIN Rail (EN 60715 TH35) |
| Cooling | Free air convection |
| Operating Temp. | -20°C ~ +70°C (derate above 50°C) |
| Protection | OVP / OCP / SCP / OTP |
| Certifications | UL / CE / TÜV / CB / RoHS |
| Dimensions (W×H×D) | 75 × 125 × 100.5 mm |
| Weight | approx. 1,500 g |
| MTBF | > 300,000 hrs (MIL-HDBK-217F) |
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as direct or near-equivalent replacements for the NDR-480-48. Always verify output voltage, current, and form factor before substitution.
| Brand | Model | Output | Power | Notes |
|---|---|---|---|---|
| Mean Well | SDR-480-48 | 48V / 10A | 480W | Same output; SDR series with active PFC |
| Mean Well | HDR-480-48 | 48V / 10A | 480W | Ultra-slim HDR series; narrower width |
| Mean Well | NDR-240-48 | 48V / 5A | 240W | Half-power NDR; same voltage rail |
| Phoenix Contact | QUINT-PS/1AC/48DC/10 | 48V / 10A | 480W | Premium alternative; SFB technology |
| Siemens | 6EP1337-3BA00 | 48V / 10A | 480W | SITOP PSU300S equivalent class |
| Puls | QS20.481 | 48V / 10A | 480W | Compact DIN rail; high efficiency |
| Omron | S8VK-G48048 | 48V / 10A | 480W | S8VK-G series; DIN rail mount |
Note: Third-party replacements may differ in protection curves, hold-up time, and certification scope. Consult datasheets before deployment in safety-critical systems.
Why Choose the Original Mean Well NDR-480-48
- Proven reliability: MTBF > 300,000 hours under MIL-HDBK-217F conditions.
- Full certification suite: UL 508, CE, TÜV, CB — accepted by panel builders globally.
- Wide input range: 90–264 VAC universal input eliminates the need for voltage selection.
- Convection cooling: No fan — silent operation, zero mechanical wear, suitable for sealed enclosures.
- Adjustable output: Trim pot allows ±10% output voltage adjustment for system fine-tuning.
- Compact DIN footprint: 75 mm wide — fits standard 4-module DIN rail space.
Typical Applications
- PLC and DCS control panel power rails (48 VDC bus)
- Industrial Ethernet switches and managed network equipment
- Servo drive auxiliary power and encoder supply
- Building automation and HVAC control systems
- Railway and transportation signaling equipment
- Telecommunications and data center auxiliary power
- Battery charging systems (with external charge controller)
System Compatibility
The NDR-480-48 is compatible with the following system architectures and components:
- PLC platforms: Siemens S7-300/400/1500, Allen-Bradley ControlLogix/CompactLogix, Mitsubishi MELSEC-Q/iQ-R, Omron CJ/CS/NX series
- DCS systems: Honeywell Experion, ABB 800xA, Emerson DeltaV — as auxiliary 48V supply
- Field devices: HART transmitters, Profibus PA segment couplers, AS-Interface power conditioners
- Safety systems: Compatible as non-safety power source feeding SIL-rated safety relays (verify SIL loop requirements separately)
Selection Guide
Use the following criteria to confirm the NDR-480-48 is the correct model for your application:
| Requirement | NDR-480-48 Suitability | Alternative if Not Suitable |
|---|---|---|
| Output voltage = 48 VDC | ✅ Yes | Select NDR-480-24 (24V) or NDR-480-12 (12V) |
| Load current ≤ 10A | ✅ Yes | If >10A, consider parallel operation or NDR-960-48 |
| DIN rail mounting required | ✅ Yes | If chassis mount needed, use RSP-500-48 |
| No fan / convection cooling | ✅ Yes | If forced-air OK, SDR-480-48 offers higher density |
| Operating temp > 50°C | ⚠️ Derate required | Verify derating curve; consider active-cooled models |
| Active PFC required | ❌ Passive PFC | Use SDR-480-48 (active PFC, PF > 0.95) |
| Ultra-slim profile (<40mm wide) | ❌ 75mm wide | Use HDR-480-48 (39.8mm wide) |
Quality Assurance & Sourcing
All Mean Well products supplied by Konmask.com are sourced through authorized distribution channels. Each unit is:
- Inspected against Mean Well factory specifications upon receipt
- Supplied with original manufacturer packaging and documentation
- Traceable via batch/lot number for warranty and compliance purposes
- Covered by Mean Well’s standard 3-year warranty (subject to application conditions)
We do not supply grey-market, refurbished, or counterfeit goods. Certificate of Conformance (CoC) and test reports are available upon request for project procurement.
How to Order
- Part Number: NDR-480-48
- Minimum Order Quantity: 1 unit
- Lead Time: In-stock items ship within 1–3 business days; contact us for bulk order scheduling
- Payment: T/T, PayPal, credit card via secure checkout
- Shipping: DHL / FedEx / UPS international express; sea freight available for large orders
- Quote Request: Email support@konmask.com with quantity and delivery destination
Replacement & Compatibility FAQ
Q: Can the SDR-480-48 directly replace the NDR-480-48?
A: Yes, electrically equivalent (48V/10A/480W). The SDR series adds active PFC (PF > 0.95) and is slightly wider. Verify DIN rail space before substitution.
Q: Can two NDR-480-48 units be connected in parallel for 20A output?
A: Yes, with the current sharing function enabled via the parallel connection terminals. Refer to Mean Well application note AN-101 for wiring details.
Q: Is the NDR-480-48 suitable for 24/7 continuous operation?
A: Yes. Rated for continuous full-load operation at up to 50°C ambient. Derate linearly to 60% load at 70°C.
Q: What is the difference between NDR-480-48 and HDR-480-48?
A: The HDR series is ultra-slim (39.8 mm vs 75 mm wide) and uses a different internal topology. Both deliver 48V/10A but the HDR is preferred where DIN rail space is constrained.
Q: Does Konmask.com provide OEM/bulk pricing?
A: Yes. Contact us at support@konmask.com or call +0086 19859288691 for volume pricing and project quotations.
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