MEAN WELL Power Supply NDR-75 Series Single Output DIN Rail Mounted

Product Item : NDR-75 series
Category：DIN Rail Power Supplies
Wattage: 75W
Input Voltage: 90 ~ 264VAC 127 ~ 370VDC [DC input operation possible by connecting AC/L(+), AC/N(-)]
Output Current: 0 ~ 6.3A
Output Voltage: 12 ~ 48V
Product description：NDR-75 is one economical slim 75W 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-75 Series - 75W DIN Rail Power Supply

✓ In Stock3-Year WarrantyUL508 Listed60ms Hold-upDIN Rail Mount

				Key Performance at a Glance
			
						75W
					
						Rated Power
					
						89%
					
						Max Efficiency
					
						32mm
					
						Ultra-Slim Width
					
						60ms
					
						Hold-up (230V)
					
						<1mA
					
						Leakage Current
					
						3
					
						Output Models

Product Overview

The NDR-75 series is MEAN WELL's 75W ultra-slim DIN rail power supply - the entry-level model in the NDR DIN rail family. With an extremely narrow 32mm width, metal housing for superior heat dissipation, and UL508 Industrial Control Equipment listing, it is purpose-built for space-constrained control cabinets in factory automation, semiconductor equipment, and industrial machinery.

Designed for TS-35/7.5 and TS-35/15 DIN rail mounting, the NDR-75 delivers 75W output from 90~264VAC universal input with natural convection cooling (fanless). The unit is fully EN61000-3-2 harmonic current compliant for EU use and features constant current overload protection - ideal for driving inductive and capacitive loads typical in industrial environments.

Measuring just 32x125.2x102mm, the NDR-75 is one of the slimmest 75W DIN rail supplies available. The metal housing efficiently dissipates heat, enabling fanless operation from -20C to +70C. Three standard output voltages are offered: 12V, 24V, and 48V. The 48V model includes a DC OK LED indicator for at-a-glance output status verification.

UL508, TUV BS EN/EN62368-1, EAC TP TC 004 certified. Class B EMC with BS EN/EN61000-6-2 heavy industrial immunity. 60ms hold-up time at 230V (12ms at 115V) - exceptionally long for a 75W supply. <1mA leakage current. 3-year warranty.

Product Images

Technical Specifications

Parameter	NDR-75-12	NDR-75-24	NDR-75-48
DC Output Voltage	12V	24V	48V
Rated Current	6.3A	3.2A	1.6A
Rated Power	75.6W	76.8W	76.8W
Ripple & Noise (max)	80mVp-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	1.45A/115VAC, 0.9A/230VAC; Inrush 20A/115V, 35A/230V cold start
Leakage / Hold-up	<1mA / 240VAC; Hold-up 60ms/230VAC, 12ms/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
Cooling	Natural convection (fanless); Metal housing for heat dissipation
DC OK Indicator	48V model only: LED indicates output status

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 (Industrial Control Equipment), TUV BS EN/EN62368-1, IEC62368-1, EAC TP TC 004
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 current), 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	2,757.3K hrs (Telcordia); 32x125.2x102mm (WxHxD); 0.51kg / 28pcs / 15.3kg

Key Features

32mm Ultra-Slim DIN Rail
Space-saving 32mm width mounts on TS-35/7.5 or TS-35/15 rails. For dense control cabinets.

UL508 Listed
Certified for Industrial Control Equipment - the gold standard for North American panel builders.

60ms Hold-up Time
Exceptionally long at 230VAC - bridges most brownouts without output interruption. 7.5x RSP-200!

<1mA Leakage Current
Ultra-low leakage for GFCI/RCD-compatible installations and sensitive 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 immunity. Built for harsh factory floor environments.

Metal Housing Fanless Design
Metal case improves heat dissipation. Natural convection cooling - zero noise, zero fan maintenance.

EN61000-3-2 Compliant
Harmonic current standard compliance for EU use. No PFC chip needed at 75W power level.

DC OK Indicator (48V)
Visual output status on 48V model. Simplifies troubleshooting in crowded cabinets.

3-Year Warranty
UL508 + TUV + EAC certified. 100% full-load burn-in tested. 2,757K hrs MTBF.

Frequently Asked Questions

How does the NDR-75 differ from an enclosed power supply like LRS-75?

The NDR-75 is purpose-built for DIN rail mounting (TS-35/7.5 or 15) vs LRS-75's enclosed/L-bracket mount. Key differences: (1) 32mm ultra-slim width for dense control panels; (2) UL508 Industrial Control Equipment listing required by North American panel builders; (3) 60ms hold-up vs LRS-75's 16ms; (4) EN61000-6-2 heavy industrial immunity vs light industrial on LRS; (5) <1mA leakage vs 2mA on LRS-75; (6) metal housing for heat dissipation vs perforated L-bracket; (7) terminal block connections vs screw terminals. Choose NDR-75 for DIN rail installations and UL508 compliance; choose LRS-75 for general enclosed applications.

What DIN rail types does the NDR-75 support?

The NDR-75 mounts on standard TS-35/7.5 and TS-35/15 DIN rails (35mm width, 7.5mm or 15mm height). These are the most common DIN rail profiles used worldwide. The unit snaps on and off without tools for easy installation and maintenance.

What is the recommended spacing for installation?

When permanently loaded at full power, MEAN WELL recommends: 40mm top clearance, 20mm bottom clearance, 5mm left/right clearance. If adjacent devices are heat sources, increase side spacing to 15mm. These clearances ensure adequate natural convection airflow for the fanless design.

Is the NDR-75 suitable for capacitive or inductive loads?

Yes. The constant current overload mode automatically limits current when driving capacitive (high inrush) or inductive (motor) loads, preventing nuisance tripping. Once the load stabilizes, the unit returns to normal voltage regulation. This makes it ideal for industrial relays, solenoids, contactors, and motor starts.

Why does the 48V model have a DC OK LED?

The 48V NDR-75-48 includes a DC OK LED indicator (green) on the front panel. This provides immediate visual confirmation that the output is active - useful in crowded control cabinets where measuring voltage at terminals is inconvenient. The 12V and 24V models do not have this feature.

Related Products

Select the NDR-75 model for your voltage requirement. All three feature UL508 listing, 32mm slim DIN rail mounting, and constant current overload protection.