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Mean Well

Mean Well HEP-480-48A Power Supply 321.6W 48V 10A

fanless designhigh efficiency up to 96%rugged metal case with IP65 design(IP68 option available)withstand 10G vibrationsuitable for harsh environment
SKU HEP-480-48A
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Select model — 15 in this family

HEP-480-48A
Available to order
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Overview

HEP-480-48A is the 48V output model of this series: rated current 10A, rated power 480W, typical efficiency 94.5%.

HEP-480 is a 480W industrial AC/DC power supply featuring the outstanding capability to operate under highly humid, dusty, oily, and high-vibration harsh environment. The entire series is housed with the aluminum case and fully potted with heat-conducted silicone. Thanks to state-of-the-art design, the working efficiency is up to 95%, enabling HEP-480 perfectly work between -55℃ and +65℃ under free air convection.

Features

  • Universal AC input / Full range
  • Built-in active PFC function
  • High efficiency up to 95%
  • Fanless design, cooling by free air convection
  • -55~+65℃ wide operating range
  • Aluminum case and filling with heat-conducted silicone
  • IP65 design, optional IP68 rated model available
  • Meet 6KV surge immunity level
  • Withstand 10G vibration test
  • Operating altitude up to 5000 meters (Note.7)
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • 6 years warranty

Specifications

HEP-480-48ASpecifications from the official datasheet (2025-10-10 edition)

OUTPUT

DC VOLTAGE
48V
RATED CURRENT
10A
RATED POWER
480W
RIPPLE & NOISE (max.)Note.2
250mVp-p
VOLTAGE ADJ. RANGENote.5
40.8 ~ 50.4V
CURRENT ADJ. RANGE
5 ~ 10A
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIMENote.4
500ms, 80ms 115VAC/230VAC
HOLD UP TIME (Typ.)
16ms 115VAC/230VAC

INPUT

VOLTAGE RANGENote.5
90~264VAC (277VAC operational) 128~370VDC(390VDC operational)
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF≧0.98/115VAC, PF≧0.97/230VAC, PF≧0.95/277VAC at full load
EFFICIENCY (Typ.)
94.5%
AC CURRENT (Typ.)
5A / 115VAC 2.45A / 230VAC 2A/277VAC
INRUSH CURRENT(Typ.)
COLD START 35A at 230VAC
LEAKAGE CURRENT
<0.75mA / 277VAC

PROTECTION

OVER CURRENT
105 ~ 125% Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT
Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
53 ~ 63V Shut down output voltage, re-power on to recover
OVER TEMPERATURE
Shut down output voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.
-55 ~ +65℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY
-60 ~ +80℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.02%/℃ (0 ~ 60℃)
VIBRATION
20 ~ 500Hz, 10G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDSNote.7
UL62368-1,IEC62368-1, IP65 (or IP68 for HEP-480 Blank-Type), EAC TP TC 004 approved ;Design refer to BS EN/EN62368-1
WITHSTAND VOLTAGE
I/P-O/P:3.75KVAC I/P-FG:2KVAC O/P-FG:1.5KVAC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, light industry level (surge 6KV), EAC TP TC 020

OTHERS

MTBF
1036.8K hrs min. Telcordia SR-332 (Bellcore) ; 89.8Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
262*125*43.8mm (L*W*H)
PACKING
2.8Kg;4pcs/11.5Kg/0.55CUFT
Test conditions and notes9
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Length of set up time is measured at cold first start. Turning ON/OFF the power supply may lead to increase of the setup time.
  5. 5. Derating may be needed under low input voltages. Please refer to the “STATIC CHARACTERISTICS” for more details.
  6. 6. The power supply shall be regarded as one component of the final system. The EMC performance will be affected by the complete system installation and/or configuration, the final system manufacturers must re-verify overall EMC directive with the complete installation and/or configuration. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
  7. 7. The water protection level test for the IP68 rating is performed 1000mm below the surface of the water for 1 month.
  8. 8. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
  9. 9. 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

HEP-480-48A Block Diagram
Block Diagram
HEP-480-48A Derating Curve
Derating Curve
HEP-480-48A Mechanical Specification
Mechanical Specification
HEP-480-48A ※Blank-Type (optional model)
※Blank-Type (optional model)
HEP-480-48A For Others
For Others

Typical applications

  • Outdoor telecommunication equipment
  • Outdoor electronic signage and billboard
  • Petroleum plant or mine shaft facility

Downloads

FAQ

Can the HEP-480-48A be used for 48V industrial control systems?

Yes, if the control system requires constant-voltage 48V DC and the total load stays within 10A. With 480W output capacity, it fits larger 48V control assemblies better than lower-power 48V supplies in the same series.

Is this power supply appropriate for 48V IT or communications equipment?

It can be appropriate for IT or communications hardware designed for a regulated 48V DC source. The unit delivers 48V constant voltage with up to 480W output, and its 90-264VAC input (277VAC operational) supports use across a broad range of AC input conditions.

Can I use the HEP-480-48A in embedded or OEM equipment that needs a sealed 48V supply?

Yes, for OEM or embedded builds that require 48V DC constant-voltage power up to 10A. The IP65 rating, 94.5% typical efficiency, and 10G vibration specification can be useful in enclosed equipment where durability matters.

Is the HEP-480-48A meant for outdoor or washdown-prone environments?

This model is rated IP65 water-resistant and operates from -55°C to +65°C (with load derating at higher temperatures), so it is suitable for demanding indoor areas and outdoor locations with exposure to dust and water spray. It is also specified to withstand 10G vibration, which supports use in harsher industrial conditions.

How does the HEP-480-48A sit within the 48V HEP lineup?

On the HEP-480 sheet, 48V output comes in two versions: the HEP-480-48A and the HEP-480-48, both 480W at 10A. The HEP-480-48A is the A-type with built-in potentiometers for 40.8-50.4V voltage and 5-10A current adjustment and an IP65 rating, while the Blank-Type HEP-480-48 is rated IP68 without adjustment.

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Mean Well HEP-480-48A Power Supply 321.6W 48V
Mean Well

Mean Well HEP-480-48A Power Supply 321.6W 48V 10A

Log in to see price

HEP-480-48A is the 48V output model of this series: rated current 10A, rated power 480W, typical efficiency 94.5%.

HEP-480 is a 480W industrial AC/DC power supply featuring the outstanding capability to operate under highly humid, dusty, oily, and high-vibration harsh environment. The entire series is housed with the aluminum case and fully potted with heat-conducted silicone. Thanks to state-of-the-art design, the working efficiency is up to 95%, enabling HEP-480 perfectly work between -55℃ and +65℃ under free air convection.

Features

  • Universal AC input / Full range
  • Built-in active PFC function
  • High efficiency up to 95%
  • Fanless design, cooling by free air convection
  • -55~+65℃ wide operating range
  • Aluminum case and filling with heat-conducted silicone
  • IP65 design, optional IP68 rated model available
  • Meet 6KV surge immunity level
  • Withstand 10G vibration test
  • Operating altitude up to 5000 meters (Note.7)
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • 6 years warranty

Typical applications

  • Outdoor telecommunication equipment
  • Outdoor electronic signage and billboard
  • Petroleum plant or mine shaft facility

Model

  • 100W 48V
  • 100W 48V Adjustable
  • 1000W 48V
  • 150W 48V
  • 150W 48V Adjustable
  • 185W 48V
  • 185W 48V Adjustable
  • 240W 48V
  • 240W 48V Adjustable
  • 320W 48V
  • 320W 48V Adjustable
  • 480W 48V
  • 480W 48V Adjustable
  • 600W 48V
  • 600W 48V Adjustable
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