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Mean Well

Mean Well HEP-480-24A Power Supply 320.16W 24V 20A

fanless designhigh efficiency up to 96%rugged metal case with IP65 design(IP68 option available)withstand 10G vibrationsuitable for harsh environment
SKU HEP-480-24A
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Select model — 15 in this family

HEP-480-24A
Available to order
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Overview

HEP-480-24A is the 24V output model of this series: rated current 20A, rated power 480W, typical efficiency 94%.

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-480-24ASpecifications from the official datasheet (2025-10-10 edition)

OUTPUT

DC VOLTAGE
24V
RATED CURRENT
20A
RATED POWER
480W
RIPPLE & NOISE (max.)Note.2
200mVp-p
VOLTAGE ADJ. RANGENote.5
20.4 ~ 25.2V
CURRENT ADJ. RANGE
10 ~ 20A
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%
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
27 ~ 33V 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-480-24A Block Diagram
Block Diagram
HEP-480-24A Derating Curve
Derating Curve
HEP-480-24A Mechanical Specification
Mechanical Specification
HEP-480-24A ※Blank-Type (optional model)
※Blank-Type (optional model)
HEP-480-24A For Others
For Others

Typical applications

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

Downloads

FAQ

Can I use the HEP-480-24A for a high-current 24V control cabinet?

Yes, if the cabinet uses 24V constant-voltage equipment and the total demand stays within 480W and 20A. That makes it suitable for larger industrial control, automation, or embedded systems built around a 24V DC rail.

Is the HEP-480-24A a fit for 24V embedded or industrial computing equipment?

It can be, because it provides a constant 24V output with up to 20A available current. For application fit, the connected 24V equipment needs to stay at or below the 480W maximum output.

Can this power supply support 24V automation hardware in vibration-prone equipment?

Yes, for 24V loads that fit within the 20A and 480W rating. The product is specified to withstand 10G vibration (20-500Hz along the X, Y and Z axes), which is relevant for harsher industrial or mobile equipment conditions.

Is the HEP-480-24A suitable for outdoor use?

This model is rated IP65 Water-Resistant, so it is intended for demanding environments but is not the IP68 version. It is specified for operation from -55°C to +65°C (with load derating at higher temperatures), which supports broad temperature exposure when the enclosure and application match an IP65 environment.

What are the main 24V alternatives to the HEP-480-24A in the same series?

In the HEP-480 series, the 24V alternative is the HEP-480-24 Blank-Type, also 480W and 20A, which is rated IP68 but has no voltage or current adjustment. The HEP-480-24A is the A-type with an IP65 rating and built-in potentiometers for 20.4-25.2V output voltage and 10-20A current adjustment.

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Mean Well HEP-480-24A Power Supply 320.16W 24V
Mean Well

Mean Well HEP-480-24A Power Supply 320.16W 24V 20A

Log in to see price

HEP-480-24A is the 24V output model of this series: rated current 20A, rated power 480W, typical efficiency 94%.

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 24V
  • 100W 24V Adjustable
  • 1000W 24V
  • 150W 24V
  • 150W 24V Adjustable
  • 185W 24V
  • 185W 24V Adjustable
  • 240W 24V
  • 240W 24V Adjustable
  • 320W 24V
  • 320W 24V Adjustable
  • 480W 24V
  • 480W 24V Adjustable
  • 600W 24V
  • 600W 24V Adjustable
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