MEAN WELL EPS-65-48-C is an enclosed single-output AC/DC power supply rated at 48 V, 1.36 A and 65.28 W. It uses natural convection, with a 103.4 × 62 × 37 mm outline and a catalogue peak rating of 72 W subject to the time, duty-cycle and average-power limits below.
Product Datasheet
Download MEAN WELL EPS-65 Datasheet (PDF)
The EPS-65 section is on PDF pages 20, 21, 22. Refer to the complete mechanical drawings and notes when planning installation.
Model and Configuration
Complete model
EPS-65-48-C.
Series
EPS-65 single-output switching power supply.
Construction
-C: optional enclosed type, supplied as the enclosed configuration.
Form factor
Compact 4 × 2 inch PCB design with a low profile suitable for integration into 1U-height equipment, subject to installation clearances.
Cooling and indication
Free-air convection cooling; LED power-on indicator.
Select the supply by its complete model code, output limits and installation temperature. This model belongs to the EPS-65 series, with its own enclosure and cooling ratings.
Output Ratings
Nominal DC output
48 V.
Rated current
1.36 A.
Rated output power
65.28 W.
Catalogue current range
0–1.5 A, subject to rated and peak power limits.
Peak output power
72 W for no more than 10 seconds.
Voltage adjustment
43.2–52.8 V using SVR1.
Ripple and noise, maximum
300 mVp-p.
Voltage tolerance
±1%.
Line regulation
±0.5%.
Load regulation
±1%.
Typical efficiency
90%.
Peak operation is limited to a maximum 33% duty cycle within each 30-second period, with average output power no higher than the rated output power. Observe both the current limit and the printed peak-power limit; a current-range maximum is not a separate continuous-power rating.
Unless specified otherwise, parameters are measured at 230 VAC input, rated load and 25°C ambient. Ripple/noise is measured with 20 MHz bandwidth and a 12-inch twisted pair terminated by parallel 0.1 μF and 47 μF capacitors. Voltage tolerance includes setup tolerance, line regulation and load regulation.
Input and Timing
AC input
90–264 VAC, 47–63 Hz.
DC input
127–370 VDC: connect DC positive (+) to AC/N and DC negative (−) to AC/L.
Typical AC current
1.8 A at 115 VAC; 1 A at 230 VAC.
Cold-start inrush
60 A at 230 VAC.
Leakage current
Less than 2 mA at 240 VAC.
No-load input power
Less than 0.3 W.
Setup and rise, full load
Setup: 1000 ms at 230 VAC / 2000 ms at 115 VAC; rise: 50 ms at either input.
Typical hold-up, full load
50 ms at 230 VAC; 12 ms at 115 VAC.
The input-voltage derating curve at 60 Hz permits 90% load at 90 VAC, rising to 100% at 100 VAC and remaining at 100% through 264 VAC. Apply the input and thermal limits together.
Protection
Short circuit and overload
Overload threshold: 115–180% of rated output power. Hiccup mode; automatic recovery after the fault is removed.
Overvoltage threshold
53.3–64.8 V.
Overvoltage recovery
Output shuts down; re-power on to recover.
Temperature, Altitude and Derating
Operating temperature
−30 to +70°C, subject to the model-specific derating curve.
Horizontal natural-convection curve
100% rated load from −30°C through 40°C, then derating along the catalogue line to 40% at 70°C.
Operating humidity
20–90% RH, non-condensing.
Storage
−40 to +85°C; 10–95% RH.
Temperature coefficient
±0.03%/°C over 0–50°C.
Operating altitude
Up to 4000 m, with the altitude-related ambient-temperature reduction below.
Vibration
10–500 Hz, 2 G; 10 minutes per cycle, 60 minutes each along X, Y and Z.
Above 2000 m, reduce allowable ambient temperature by 3.5°C per additional 1000 m for fanless operation. The catalogue gives 5°C per 1000 m for fan-operated conditions; this model is described here using its natural-convection ratings. Use the curve for this exact voltage and enclosure version.
Mechanical Installation
Overall dimensions (L × W × H)
103.4 × 62 × 37 mm.
Drawing tolerance
±1 mm.
Safety grounding
Both M1 and M2 are safety-ground points and must be grounded; provide protective earth in the installed Class I system.
Heatsink clearance
Do not short HS1 and HS2. Maintain the safety isolation distance between HS1 and the system case.
Case installation
Follow the enclosure drawing for its M3 L=3 and M3 L=4 mounting groups. The base M3 L=3 pair is shown at 55 mm spacing and the side M3 L=3 pair at 78 mm spacing; retain the illustrated insulating Mylar film and required clearances.
Use the dimensioned drawing on PDF page 21 to locate mounting points, input, output, LED and SVR1. Do not infer supplied fasteners or allowable screw penetration from the outline alone.
Connections and Mating Parts
AC input CN1
JST B3P-VH or equivalent: pin 1 AC/N, pin 2 no pin, pin 3 AC/L.
DC output CN2
JST B4P-VH or equivalent: pins 1 and 2 +V; pins 3 and 4 −V.
Mating housings
JST VHR family or equivalent for CN1 and CN2; select the full housing reference matching each connector’s circuit count.
Crimp terminals
JST SVH-21T-P1.1 or equivalent.
L-bracket
Optional L-bracket reference 998A-D.
Cover
Optional cover reference 998A-T.
The -C suffix identifies the enclosed version. The bracket and cover references are shown as optional accessories in the series drawing; the PCB-only model does not include an enclosure by definition. Select mating housings and wire assemblies for the stated input/output assignments.
Safety and EMC
Listed approvals
UL62368-1; TUV BS EN/EN62368-1; CCC GB4943.1; EAC TP TC004.
Withstand voltage
Input–output: 3 kVAC; input–FG: 2 kVAC; output–FG: 0.5 kVAC.
Insulation resistance
Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH.
Emissions
BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3-3; GB9254.1 Class B; GB17625 Class A; EAC TP TC020.
Immunity
BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN55035, heavy-industry level; EAC TP TC020.
The catalogue EMC test setup uses a 360 × 360 × 1 mm metal plate. This supply is an installation component; re-confirm EMC compliance in the finished equipment.
Weight, Reliability and Catalogue
Single-unit catalogue weight
300 g (0.3 kg), explicitly printed per unit in PACKING; a catalogue packing reference, not a measured net or shipping-parcel weight.
Packing
45 pieces / 14.5 kg / 0.63 CUFT.
MTBF, minimum estimates
3077.6 thousand hours, Telcordia SR-332 (Bellcore); 563.0 thousand hours, MIL-HDBK-217F at 25°C.
Warranty
Three-year manufacturer warranty, subject to applicable terms.
Catalogue
EPS-65-SPEC, 2026-03-31; combined PDF pages 20–22.
Read
more
less