Name: MEAN WELL XDR-120E series: Industrial DIN rail AC/DC power supply - XDR-120E-48
Brand: MEAN WELL
SKU: XDR-120E-48
Price: 57.17 USD
Availability: InStock

MEAN WELL XDR-120E series: Industrial DIN rail AC/DC power supply - XDR-120E-48

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Description

XDR-120E-48 — Industrial DIN rail AC/DC power supply

XDR-120E-48 is a MEAN WELL economical, slim industrial DIN rail AC/DC power supply with a fanless, free-air-convection design. Its selected output is 48 V DC, 2.5 A, 120 W, subject to the input-voltage, ambient-temperature and installation limits. It combines adjustable output voltage, constant-current limiting and a DC OK relay for cabinet and automation power systems.

Download MEAN WELL XDR-120E Datasheet (PDF)
Download MEAN WELL XDR-E Installation Manual (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

XDR-120E specifications, load curves, installation and packing: PDF pages 8–14.

Model and electrical specifications

Model and design	XDR-120E-48; XDR-120E series. Economical E version, slim 30 mm casing width, single adjustable DC output and natural-convection cooling.
Rated output	48 V DC, 2.5 A, 120 W.
Output current range	0–2.5 A.
Output voltage adjustment	48–55 V DC, using the front Vo Adj. control. Observe the selected model's current, power and derating limits.
AC and DC input	85–264 V AC or 120–370 V DC. AC frequency 47–63 Hz; apply the input-load curve below.
Typical efficiency	91%. The XDR-120E series advertises efficiency up to 91%; the selected model's typical figure is the value stated first.
No-load power consumption	0.8 W / 1 W typical at 115 V AC / 230 V AC respectively.
Series standby-power reference	The series is described with 0.6–1 W no-load consumption; use the selected model and input-specific typical values above.
Input current	2.3 A at 115 V AC; 1.3 A at 230 V AC; typical.
Cold-start inrush current	20 A at 115 V AC; 40 A at 230 V AC; typical.
Leakage current	<1 mA at 240 V AC.
Ripple and noise	150 mVp-p maximum. Measured with 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel.
Regulation and tolerance	Voltage tolerance ±1.0%, including set-up tolerance, line regulation and load regulation. Line regulation ±0.5%; load regulation ±1.0%.
Setup and rise time	1200 ms / 60 ms at 230 V AC; 2500 ms / 60 ms at 115 V AC (setup / rise), at full load.
Hold-up time	16 ms at 230 V AC; 8 ms at 115 V AC; typical, at full load.
Test conditions	Unless individually stated, parameters are measured at 230 V AC input, rated load and 25°C ambient temperature.
Block-diagram oscillator frequencies	PWM: 70 kHz.

Protection and monitoring

Overload and short-circuit response	105–130% of rated output power; constant-current limiting without shutdown, recovering automatically after the fault condition is removed.
Overvoltage protection	56–65 V; output shutdown, cycle input power to recover.
Overtemperature protection	Output shutdown, recovering automatically after the fault condition is removed.
DC OK relay state	Contacts close when the PSU is ON / DC OK, and open when it is OFF / DC fail. Control connector B pins 1 and 2 form the relay contact.
DC OK contact ratings	Maximum 30 V DC / 1 A or 30 V AC / 0.5 A, resistive load. This is a relay contact, not an auxiliary power output; the illustrated monitoring circuit uses an external voltage source and resistor.

Thermal limits and operating environment

Working and storage environment	Working: −40 to +70°C with derating; 20–95% RH, non-condensing. Storage: −40 to +85°C; 10–95% RH, non-condensing.
Ambient-temperature load curve	Vertical mounting: 50% load at −40°C, 100% from −30 to +50°C, 80% at +60°C and 75% at +70°C. Follow the source curve between its marked points and apply input-voltage derating at the same time.
Combined cold and low-line limitation	When ambient temperature is between −40 and −20°C and input is between 85 and 90 V AC, Note 4 specifies a 40% load derating limit. This specific combined condition takes precedence over a general curve reading.
Input-voltage load curve	At 60 Hz: 75% load at 85 V AC, rising to 100% at 100 V AC and remaining at 100% to 264 V AC.
Temperature coefficient	±0.03%/°C over 0–50°C.
Vibration	Component: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes each along X, Y and Z axes. Mounting complies with IEC60068-2-6.
Altitude and overvoltage category	IEC/EN61558-1/-2-16: OVC III up to 2000 m. IEC/EN/UL61010-1/-2-201 and IEC/EN62368-1: OVC II up to 5000 m. For this fanless model above 2000 m, derate the allowable ambient temperature by 3.5°C per additional 1000 m; 5000 m is not an OVC III rating.

Safety and electromagnetic compatibility

Safety standards	CB: IEC62368-1, IEC61558-1/-2-16, IEC61010-1/-2-201. TUV: BS EN/EN62368-1, BS EN/EN61558-1/-2-16, BS EN/EN61010-1/-2-201. UL/CUL61010-1/-2-201; CCC GB4943.1; BSMI CNS15598-1; EAC TP TC 004 approved.
Conditional certification and marks	KC62368-1 and BIS IS13252 (Part 1) are certified but not stocked as standard: by request, contact MEAN WELL sales. Some factories or models may lack the BIS logo. RCM use is voluntary under AS/NZS4417.1, with the applicable IEC/AS/NZS standards or AS/NZS3820; confirm the marks on the supplied unit.
SELV classification	SELV to IEC/EN61558-2-16; SELV / ES1 to IEC/EN62368-1.
Withstand voltage	Input–output 4 kV AC; input–FG 2 kV AC; output–FG 1.5 kV AC; output–DC OK 0.5 kV AC.
Isolation resistance	100 MΩ at 500 V DC, 25°C and 70% RH, for input–output, input–FG and output–FG.
EMC emissions	Conducted and radiated Class B: BS EN/EN55032 (CISPR32), BS EN/EN61204-3, CNS15936 and KS C 9832. Harmonic current BS EN/EN61000-3-2 Class A; voltage flicker BS EN/EN61000-3-3.
Immunity framework	BS EN/EN55035, BS EN/EN61204-3, BS EN/EN61000-6-2 (BS EN/EN50082-2) and KS C 9835.
Immunity test levels	Criterion A for all listed tests: IEC/EN61000-4-2 ESD Level 3, 8 kV air / Level 2, 4 kV contact; -4-3 RF Level 3, 10 V/m; -4-4 EFT/burst Level 3, 2 kV; -4-5 surge Level 4, 2 kV line–line and 4 kV line–line–chassis; -4-6 conducted Level 3, 10 V; -4-8 magnetic field Level 4, 30 A/m.

Mechanical installation and terminals

Dimensions	30 × 125.2 × 116 mm (W × H × D); case 301. Mechanical drawing dimensions are in mm with ±1 mm tolerance.
DIN rail and mounting	For vertical mounting on TS35/7.5 or TS35/15 DIN rail. The illustrated rail is a reference and is not included with the unit.
Main-datasheet clearance note	For permanent full-power loading, the main datasheet recommends 40 mm above, 20 mm below and 5 mm at each side; it gives 15 mm when an adjacent device is a heat source. The dedicated installation manual specifies a larger heat-source clearance; follow the installation guidance below and confirm the final thermal layout.
Input terminal assignment	Connector C: pin 1 AC/L or DC +Vin; pin 2 AC/N or DC −Vin; pin 3 FG protective earth.
Output and control terminal assignment	Connector A: pin 1 +Vo; pins 2 and 3 −Vo. Connector B: pins 1 and 2 DC OK. The front panel also identifies Status and Vo Adj.
AC input wiring	Solid wire 6 mm² maximum; 16–10 AWG; strip 7–8 mm; screw-terminal torque 5 lb-in.
DC output wiring	Solid wire 6 mm² maximum; 16–10 AWG; strip 7–8 mm; screw-terminal torque 5 lb-in.
Signal wiring	Solid wire 1.5 mm² maximum; 24–16 AWG; strip 8–9 mm. The signal-connector torque entry is not specified.

Applications, reliability and packing

Typical applications	Industrial control systems, semiconductor fabrication equipment, factory automation, electromechanical apparatus and battery-charger systems. Select the complete system for the intended load and safety requirements.
Reliability	MTBF minimum 2223.1 K hours by Telcordia SR-332 (Bellcore); minimum 440.4 K hours by MIL-HDBK-217F at 25°C.
Manufacturer warranty	MEAN WELL states a 3-year manufacturer warranty.
Unit weight and packing	510 g per unit as the catalog PACKING reference; carton packing 24 units / 13.25 kg / 1.16 CUFT.

Installation and system verification

Safe installation and system integration	For indoor, built-in equipment and pollution-degree-2 environments. Disconnect the supply and prevent accidental reconnection before installation, maintenance or modification. Qualified technicians must investigate failures; do not remove the case yourself or connect primary and secondary circuits together. Connect FG / PE to protective earth, protect openings from foreign objects and dripping liquids, and avoid moisture, water and hot surfaces. The system integrator is responsible for the complete system.
Vertical DIN rail installation	Mount vertically with input terminals down and output terminals up; upside-down, horizontal and tabletop mounting are not permitted. For TS35/7.5 or TS35/15 rail, tilt the unit rearward, fit it over the top edge, slide down to the stop, press the bottom until it locks, then check the latch by gently moving the unit. Cooling is by natural air convection.
Ventilation and adjacent heat sources	Allow 40 mm above, 20 mm below and 5 mm at each side. The 2025-05-29 installation manual requires 10–15 cm clearance from an adjacent heat source, whereas the main datasheet note gives 15 mm. Allow the larger manual clearance for the installation and confirm the final thermal layout with MEAN WELL; apply the model-specific load curves and altitude derating.
Copper conductors and load distribution	Use copper conductors and connectors, with insulation rated at least 80°C, such as UL1007/1015. The manual recommends 18 / 16 / 14 / 12 AWG for equipment currents of 7 / 10 / 15 / 20 A, paired with 0.8 / 1.3 / 2.1 / 3.3 mm². With five or more wires connected, reduce each wire's suggested current to 80%. Insert all strands, secure the terminals and wire every output contact to distribute current. These are manual recommendations; also observe the selected model's terminal capacities.
Terminal preparation and document scope	Use the model-specific stripping lengths and separate DC and AC DC OK relay-contact ratings stated above. The manual's generic 5 mm strip length and 30 V / 1 A contact summary do not replace the mechanical-table lengths or the separate 30 V DC / 1 A and 30 V AC / 0.5 A resistive limits. For the standard blank screw-terminal type, the manual specifies 5.8 kgf·cm (5 lb-in) and recommends a 3 mm slotted screwdriver. LA lever-actuated and PI push-in are optional terminal categories; confirm the complete ordering code and supplied hardware before selecting an alternative.
Fuse and qualified service	The installation manual lists T4A/L250V for XDR-120E. For continued fire protection, qualified service must use the same fuse type and rating. This reference does not authorize opening or servicing an energized unit.
Document-specific operating limits	Use the selected model's main-datasheet input range, output ratings, temperature curve and standard-specific OVC / altitude limits. The 2025-05-29 manual also contains nominal input-label information and broader OVC wording; these do not extend the main specification. The English instructions permit derated operation to 70°C, while the shorter French temperature sentence mentions 50°C; the main load curve gives the applicable output limit.
Complete-system EMC verification	Verify EMC with the power supply installed in the final equipment and connected to a representative load. Wiring, assembly and the application affect the result. Follow the selected model's EMC conditions; component-level test results and the linked EMI testing guidance do not certify the finished equipment.