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Mean Well EPS-120-48 Power Supply 84W 48V 1.75A

Name: Mean Well EPS-120-48 Power Supply 84W 48V 1.75A
Brand: Mean Well
SKU: EPS-120-48
Price: 27.06 USD
Availability: InStock

3" x 2"economical non-PFCsmall sizehigh efficiency

SKU EPS-120-48

$27.06 USD

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In stock

Overview

EPS-120-48 is the 48V output model of this series: typical efficiency 91%.

EPS-120 is a 120W highly reliable green PCB type power supply with a high power density on the 4" by 2" footprint. It accepts 80~264VAC input and offers various output voltages between 12V and 48V. The working efficiency is up to 91% and the extremely low no load power consumption is down below 0.3W. EPS-120 is able to be used for both ClassⅠ(with FG) and ClassⅡ(no FG) system design. EPS-120 has the complete protection functions; it is complied with the international safety regulations such as TUV BS EN/EN62368-1, UL62368-1 and IEC62368-1. EPS-120 series serves as a high price-to-performance power supply solution for various industrial applications.

Features

4"x2" miniature size
Universal AC input / Full range
EMI Class B for both ClassⅠ(with FG) and Class Ⅱ(without FG) configuration
No load power consumption<0.3W
High efficiency up to 91%
Protections: Short circuit / Overload / Over voltage / Over temperature
Cooling by free air convection for 84W and 120W with 10CFM forced air
Built-in 12V/0.5A fan supply
LED indicator for power on
Operating altitude up to 5000 meters
3 years warranty

Specifications

EPS-120-48Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 48V
CURRENT 10CFM: 2.5A
CURRENT Convection: 1.75A
RATED POWER 10CFM: 120W
RATED POWER Convection: 84W
RIPPLE & NOISE (max.)^Note.2: 200mVp-p
VOLTAGE ADJ. RANGE: 45.6 ~50.4V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 500ms, 30ms/230VAC 500ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 50ms/230VAC 10ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.4: 80 ~ 264VAC 113 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 91%
AC CURRENT (Typ.): 2.1A/115VAC 1.2A/230VAC
INRUSH CURRENT (Typ.): COLD START 30A/115VAC 60A/230VAC
LEAKAGE CURRENT: <0.75mA / 240VAC

PROTECTION

OVERLOAD: 115~150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 52.8 ~ 62.4V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Protection type : Shut down o/p voltage, re-power on to recover

FUNCTION

FAN SUPPLY: 12V@0.5A for driving a fan ; tolerance -15% ~ +10% at main output 40% rated current (10CFM)

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
OPERATING ALTITUDE^Note.6: 5000 meters
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note 5)

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1, IEC62368-1, CCC GB4943.1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, GB9254.1 Class B,GB17625 Class A, EAC TP TC 020
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, BS EN/EN61000-6-2, heavy industry level, criteria A, EAC TP TC 020

OTHERS

MTBF: 3746.9K hrs min. Telcordia SR-332 (Bellcore) ; 491.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 101.6*50.8*29mm (L*W*H)
PACKING: 0.15Kg; 72pcs/11.8Kg/0.82CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltages. Please check the derating curve for more details.
5. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

EPS-120-48 Block Diagram — Block Diagram

EPS-120-48 Derating Curve — Derating Curve

EPS-120-48 Mechanical Specification — Mechanical Specification

Typical applications

Industrial automation machinery
Industrial control system
Mechanical and electrical equipment
Electronic instruments, equipments or apparatus

Downloads

Datasheet1

EPS-120-48 datasheetEPS-120-SPEC.PDF · 2026-03-31 edition PDF Download

Certificates8

Mean Well E183223 UL Certificate PDF Download

Mean Well EPS-120 TUV Certificate PDF Download

Mean Well EPS-120 CB(UL) Certificate PDF Download

Mean Well EPS-120 CB(TUV) Certificate PDF Download

Mean Well EPS-120 EMC Certificate PDF Download

Mean Well EPS-120 CE-dec Certificate PDF Download

Mean Well EPS-120 UK-dec Certificate PDF Download

Mean Well EAC Certificate PDF Download

Test reports1

Mean Well EPS-120-48 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the EPS-120-48 for a 48V industrial control panel?

Yes, this model is a constant-voltage 48V supply rated for 1.75A and 84W with convection cooling, or 2.5A and 120W with a 10CFM fan, which fits control-panel loads that require a fixed 48V DC output. Its 80-264VAC input range also suits sites that may see different AC line conditions.

Is the EPS-120-48 suitable for small 48V telecom or networking equipment?

It can fit compact 48V devices as long as the load stays within 1.75A and 84W with convection cooling, or 2.5A and 120W with a 10CFM fan. Buyers commonly use this output class where a stable 48V constant-voltage source is required rather than a lower-voltage rail.

Can this power supply run a 48V embedded or automation subsystem?

Yes, if the subsystem is designed for 48V constant-voltage input and does not exceed 1.75A with convection cooling, or 2.5A with a 10CFM fan. The compact 101.6 x 50.8 x 29 mm size can also help where board-level or enclosure space is limited.

Is the EPS-120-48 a good fit for indoor or outdoor use?

The operating range is -30°C to +70°C, with load derating at higher ambient temperatures per the derating curve. No IP rating is listed here, so it is better matched to protected indoor equipment or an enclosure that provides the required environmental protection.

How does the EPS-120-48 compare with other EPS series 48V models?

This spec sheet covers the EPS-120 series, which offers 12V at 7A, 15V at 5.6A, 24V at 3.5A, 27V at 3.15A and 48V at 1.75A with convection cooling (84W, or 85W for the 27V model). With a 10CFM fan the ratings rise to 120W (121.5W for 27V). The EPS-120-48 is the 48V option, delivering 2.5A with the fan.

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