MEAN WELL Power Supply NDR-480 Series Single Output DIN Rail Mounted

Product Item : NDR-480 series
Category：DIN Rail Power Supplies
Wattage: 480W
Input Voltage: 90 ~ 264VAC 127 ~ 370VDC [DC input operation possible by connecting AC/L(+), AC/N(-)]
Output Current: 0 ~ 20A
Output Voltage: 24 ~ 48V
Product description：NDR-480 is one economical slim 480W DIN rail power supply series, adapt to be installed on TS-35/7.5 or TS-35/15 mounting rails.
INQUIRY EMAIL

NDR-480 Series - 480W DIN Rail Power Supply with Active PFC

✓ In Stock3-Year WarrantyActive PFC92.5% EffEN60204-1

				Key Performance at a Glance
			
						480W
					
						Rated Power
					
						92.5%
					
						Efficiency
					
						PF>0.98
					
						Power Factor
					
						16ms
					
						Hold-up
					
						20A
					
						Max Current @24V
					
						2
					
						Output Models

Product Overview

The NDR-480 series is MEAN WELL's highest-power NDR DIN rail power supply at 480W. It achieves an extraordinary 92.5% efficiency across both output voltages through an advanced dual-stage architecture with separate 85KHz PFC and 65KHz PWM circuits. This enables fanless operation at a power level where many competitors require forced air cooling.

Designed for TS-35/7.5 and TS-35/15 DIN rail mounting, the NDR-480 delivers 480W from 90~264VAC universal input. Two outputs are offered: 24V at 20A and 48V at 10A. The overload protection uses a unique 3-second CC mode with auto-shutdown — providing momentary overload tolerance while protecting against sustained faults. BS EN/EN60204-1 machine safety compliance is standard.

Measuring 85.5x125.2x128.5mm, the NDR-480 is the widest and deepest NDR model. The dual-stage 85KHz PFC + 65KHz PWM architecture includes under-voltage protection (UVP) not found on other NDR models. Both models feature DC OK LED. BIS certification applies to the 24V model — 48V is excluded.

UL508, TUV BS EN/EN62368-1, BSMI CNS15598-1, EAC TP TC 004, BIS IS13252 (24V only), BS EN/EN60204-1 certified. Class B EMC with EN61000-6-2 heavy industrial immunity. <2mA leakage. 16ms uniform hold-up at both 230V and 115V. 3-year warranty.

Product Images

Technical Specifications

Parameter	NDR-480-24	NDR-480-48
DC Output Voltage	24V	48V
Rated Current	20A	10A
Rated Power	480W	480W
Ripple & Noise (max)	150mVp-p	150mVp-p
Voltage Adjustment Range	24~28V	48~55V
Voltage Accuracy	+/-1.0%	+/-1.0%
Line Regulation	+/-0.5%	+/-0.5%
Load Regulation	+/-1.0%	+/-1.0%
Efficiency (Typ.)	92.5%	92.5%

Input, Protection & Features (All Models)

Input Voltage	90~264VAC universal; 127~370VDC. Active PFC: PF>0.98/115V, PF>0.94/230V. 47~63Hz
AC Current / Inrush	4.8A/115VAC, 2.4A/230VAC; Inrush 20A/115V, 35A/230V cold start
Leakage / Hold-up	<2mA / 240VAC; Hold-up 16ms @ 230V and 115V (uniform!)
Overload Protection	105~130% rated power; CC mode for 3 seconds, then shutdown, restart to recover
Overvoltage Protection	24V: 29~33V / 48V: 56~65V. Output shutdown, restart to recover
Over-temperature Protection	Output shutdown, auto-recovery after temperature drops
Under-voltage Protection	UVP circuit — unique to NDR-480 in NDR family
Cooling / Architecture	Natural convection (fanless); 85KHz PFC + 65KHz PWM dual-stage

Environmental, Safety & EMC

Operating Temperature	-20~+70C (fanless; derating applies). Temp coefficient +/-0.03%/C (0~50C). Humidity 20~95% RH
Vibration	10~500Hz, 2G, 10 min/cycle, 60 min each X/Y/Z; Mounting: IEC60068-2-6 compliant
Safety Standards	UL508, TUV BS EN/EN62368-1, BSMI CNS15598-1, EAC TP TC 004; BIS IS13252 (24V only); BS EN/EN60204-1 compliance
Withstand / Insulation	I/P-O/P: 3KVAC \| I/P-FG: 2KVAC \| O/P-FG: 0.5KVAC; Insulation: >100Mohm/500VDC
EMC Emissions	EN55032 (CISPR32), EN61204-3 Class B, EN61000-3-2 (harmonic), EN61000-3-3; CNS15936 Class B
EMC Immunity	EN61000-4-2,3,4,5,6,8,11, EN55035, EN61000-6-2 Heavy Industrial
MTBF / Dimensions	1,041.6K hrs (Telcordia); 85.5x125.2x128.5mm (WxHxD); 1.5kg / 8pcs / 13kg

Key Features

92.5% Peak Efficiency
Highest in NDR family — both voltages. Fanless 480W operation with minimal heat. 85KHz+65KHz dual-stage.

480W in 85.5mm Slim Profile
Highest power density in NDR series. 24V at 20A — double NDR-240. Fanless metal housing.

3-Second CC Overload + Shutdown
Momentary overload tolerance for motor starts, then automatic shutdown. Prevents sustained damage.

Under-Voltage Protection
Built-in UVP circuit — unique in NDR family. Protects sensitive loads from brownout conditions.

Active PFC PF>0.98
Full EN61000-3-2 compliance at 480W. 85KHz PFC stage for clean input current.

EN60204-1 Machine Safety
Compliant with European machinery electrical safety standard. Ready for equipment OEM integration.

UL508 + BIS + BSMI
North America, India (24V only), and Taiwan certifications. TUV + EAC for EU and Eurasia.

DC OK LED Both Models
Green LED on 24V and 48V. Instant visual output status in crowded control cabinets.

Constant Current Overload
Smooth limiting for high-inrush inductive and capacitive industrial loads. Auto-recovery after fault.

3-Year Warranty
UL508 + TUV + BSMI + EAC + EN60204-1. EN61000-6-2 heavy industrial. 1,041K hrs MTBF.

Frequently Asked Questions

How does the NDR-480 differ from the NDR-240?

The NDR-480 doubles power to 480W vs 240W. Key differences: (1) 92.5% efficiency (vs 90% on NDR-240-48, 88.5% on NDR-240-24); (2) Dual-stage architecture (85KHz PFC + 65KHz PWM vs single 70KHz); (3) 3-second CC overload then shutdown (vs continuous CC on NDR-240); (4) UVP (under-voltage protection) added; (5) 85.5mm width (vs 63mm); (6) BIS only on 24V (vs both on NDR-240); (7) <2mA leakage (vs <1mA); (8) 1.5kg (vs 1kg); (9) no KC certification.

Why does the overload protection shut down after 3 seconds?

At 480W, sustained overload (105~130%) generates significant heat. The 3-second CC window provides enough time for motor starts, solenoid pull-in, and capacitive inrush currents to stabilize. After 3 seconds, the unit safely shuts down to prevent thermal damage. This is a deliberate design trade-off: momentary overload tolerance with safe fault protection at high power.

Why is the BIS certification only on the 24V model?

The NDR-480-48 is not covered under BIS IS13252 certification. For shipments to India requiring a 48V DIN rail solution, contact MEAN WELL sales for alternatives. The 24V model is fully BIS certified.

How does the 92.5% efficiency enable fanless operation at 480W?

At 92.5% efficiency, only 7.5% of input power — approximately 39W — is dissipated as heat. The metal housing and optimized airflow design dissipate this passively. This is achievable through the dual-stage architecture where the 85KHz PFC and 65KHz PWM stages are independently optimized for their respective functions.

What is the uniform 16ms hold-up time at both voltages?

Unlike other NDR models where hold-up varies between 230V and 115V, the NDR-480 provides 16ms uniformly at both input voltages. This is achieved through the dual-stage PFC+PWM design with bulk capacitance optimized for wide-range operation. It means consistent brownout ride-through regardless of your mains voltage.