MEAN WELL Power Supply NDR-120 Series Single Output DIN Rail Mounted

Product Item : NDR-120 series
Category：DIN Rail Power Supplies
Wattage: 120W
Input Voltage: 90 ~ 264VAC 127 ~ 370VDC [DC input operation possible by connecting AC/L(+), AC/N(-)]
Output Current: 0 ~ 10A
Output Voltage: 12 ~ 48V
Product description：NDR-120 is one economical slim 120W DIN rail power supply series, adapt to be installed on TS-35/7.5 or TS-35/15 mounting rails.
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NDR-120 Series - 120W DIN Rail Power Supply

✓ In Stock3-Year WarrantyUL508 ListedDC OK All ModelsBS EN/EN60204-1

				Key Performance at a Glance
			
						120W
					
						Rated Power
					
						89%
					
						Max Efficiency
					
						40mm
					
						Slim Width
					
						16ms
					
						Hold-up (230V)
					
						<1mA
					
						Leakage Current
					
						3
					
						Output Models

Product Overview

The NDR-120 series is MEAN WELL's 120W slim DIN rail power supply - the mid-range model in the NDR family. It delivers 60% more power than NDR-75 while maintaining a compact 40mm width. A key upgrade: DC OK LED indicator on ALL models (not just 48V like NDR-75), plus BS EN/EN60204-1 machine safety compliance for factory automation equipment.

Designed for TS-35/7.5 and TS-35/15 DIN rail mounting, the NDR-120 delivers 120W from 90~264VAC universal input with natural convection (fanless) cooling. All three standard voltages (12V, 24V, 48V) deliver full 120W output - no derating at low voltages unlike some competitors. Constant current overload protection handles inductive and capacitive loads typical in industrial environments.

Measuring 40x125.2x113.5mm, the NDR-120 is 8mm wider than the NDR-75 (40mm vs 32mm) and slightly deeper (113.5mm vs 102mm). The metal housing and 70KHz switching frequency enable fanless operation from -20C to +70C. All three models include a front-panel DC OK LED for immediate output verification - a significant field service advantage.

UL508, TUV BS EN/EN62368-1, EAC TP TC 004 certified, plus BS EN/EN60204-1 (Safety of machinery - Electrical equipment of machines) compliance. Class B EMC with EN61000-6-2 heavy industrial immunity. 16ms hold-up at 230V (10ms at 115V). <1mA leakage. 3-year warranty.

Product Images

Technical Specifications

Parameter	NDR-120-12	NDR-120-24	NDR-120-48
DC Output Voltage	12V	24V	48V
Rated Current	10A	5A	2.5A
Rated Power	120W	120W	120W
Ripple & Noise (max)	100mVp-p	120mVp-p	150mVp-p
Voltage Adjustment Range	12~14V	24~28V	48~55V
Voltage Accuracy	+/-2.0%	+/-1.0%	+/-1.0%
Line Regulation	+/-0.5%	+/-0.5%	+/-0.5%
Load Regulation	+/-1.0%	+/-1.0%	+/-1.0%
Efficiency (Typ.)	85.5%	88%	89%

Input, Protection & Features (All Models)

Input Voltage	90~264VAC universal; 127~370VDC (AC/L to +, AC/N to -). 47~63Hz
AC Current / Inrush	2.25A/115VAC, 1.3A/230VAC; Inrush 20A/115V, 35A/230V cold start
Leakage / Hold-up	<1mA / 240VAC; Hold-up 16ms/230VAC, 10ms/115VAC (full load)
Overload Protection	105~130% rated power; Constant current mode, auto-recovery after fault removal
Overvoltage Protection	12V: 14~17V / 24V: 29~33V / 48V: 56~65V. Output shutdown, restart to recover
Over-temperature Protection	Output shutdown, restart to recover after temperature drops
DC OK Indicator	Green LED on ALL models (12V, 24V, and 48V) - full upgrade from NDR-75
Cooling	Natural convection (fanless); Metal housing; 70KHz switching frequency

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, IEC62368-1, EAC TP TC 004; BS EN/EN60204-1 (machinery safety) compliance
Withstand / Insulation	I/P-O/P: 3KVAC \| I/P-FG: 2.0KVAC \| O/P-FG: 0.5KVAC; Insulation: >100Mohm/500VDC
EMC Emissions	EN55032 (CISPR32), EN61204-3 Class B, EN61000-3-2 (harmonic), EN61000-3-3, EAC TP TC 020
EMC Immunity	EN61000-4-2,3,4,5,6,8,11, EN55035, EN61000-6-2 Heavy Industrial, EN61204-3
MTBF / Dimensions	2,636.8K hrs (Telcordia); 40x125.2x113.5mm (WxHxD); 0.6kg / 20pcs / 13kg

Key Features

DC OK LED on ALL Models
Green LED indicator across 12V, 24V, and 48V - not just 48V like NDR-75. Instant status in cabinets.

Full 120W at All Voltages
12V delivers 10A at full 120W - no derating. 60% more power than NDR-75 in a 40mm profile.

BS EN/EN60204-1 Compliant
Machine safety standard for electrical equipment of machines. Ideal for equipment OEMs and panel builders.

UL508 Listed
Certified for Industrial Control Equipment. The gold standard for North American control panel builders.

<1mA Leakage Current
Ultra-low leakage for GFCI/RCD-compatible installations and sensitive industrial equipment.

Constant Current Overload
Smooth current limiting for inductive/capacitive loads. Auto-recovery avoids manual intervention.

Heavy Industrial Immunity
EN61000-6-2 heavy industrial EMC. Built for harsh factory floor and semiconductor fab environments.

Metal Housing Fanless
Metal case improves heat dissipation. 70KHz switching. Natural convection - zero noise, zero maintenance.

EN61000-3-2 Compliant
Harmonic current compliance for EU. 90~264VAC universal input with DC input support.

3-Year Warranty
UL508 + TUV + EAC + BS EN/EN60204-1. 100% burn-in tested. 2,636K hrs MTBF.

Frequently Asked Questions

How does the NDR-120 differ from the NDR-75?

The NDR-120 delivers 120W vs 75W (+60%) in a slightly wider 40mm chassis (vs 32mm). Key differences: (1) DC OK LED on ALL models (not just 48V); (2) BS EN/EN60204-1 machine safety compliance; (3) 16ms hold-up at 230V (vs 60ms on NDR-75 - a trade-off for higher power); (4) 70KHz switching (vs 85KHz); (5) full 120W at 12V (vs 75.6W); (6) slightly deeper: 113.5mm (vs 102mm). Choose NDR-120 when you need more power with universal DC OK indication; choose NDR-75 when you need the longest hold-up time in a narrower form factor.

Does the NDR-120 have DC OK indication on all voltages?

Yes. Unlike the NDR-75 where DC OK is exclusive to the 48V model, all three NDR-120 models (12V, 24V, 48V) feature a green DC OK LED on the front panel. This provides immediate visual output status verification across your entire control cabinet regardless of voltage.

What is BS EN/EN60204-1 and why does it matter?

BS EN/EN60204-1 is the European standard for "Safety of machinery - Electrical equipment of machines." It covers electrical safety requirements for industrial machinery including supply disconnection, protection against electric shock, and equipment protection. Compliance means the NDR-120 can be integrated into European machinery OEM designs without additional power supply qualification.

Why is the hold-up time shorter than NDR-75?

The NDR-120's 16ms hold-up (vs NDR-75's 60ms) is a result of the higher power density (120W in 40mm) and different internal capacitor sizing. 16ms at 230V still provides one full AC cycle of ride-through - sufficient for most industrial applications. If longer hold-up is critical, consider NDR-75 or adding an external UPS.

Can all models deliver full 120W at the rated voltage?

Yes. All three NDR-120 models deliver 120W continuous at their rated voltage: 12V/10A, 24V/5A, 48V/2.5A. There is no low-voltage derating - a significant advantage over some competing DIN rail supplies that reduce output at 12V.