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Mean Well HEP-480-24 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-480-24
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Select model — 15 in this family

HEP-480-24
Available to order
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Overview

HEP-480-24 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-480-24Specifications 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-480-24 Block Diagram
Block Diagram
HEP-480-24 Derating Curve
Derating Curve
HEP-480-24 Mechanical Specification
Mechanical Specification
HEP-480-24 ※Blank-Type (optional model)
※Blank-Type (optional model)
HEP-480-24 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-480-24 for a 24V industrial automation system?

Yes, this is a constant-voltage 24V supply rated for up to 480W and 20A. It fits industrial automation, control, or embedded 24V equipment that is designed for a fixed 24V DC source and remains within those limits.

Is the HEP-480-24 suitable for powering multiple 24V DC loads in one system?

It can be used where the combined 24V load does not exceed 20A or 480W. That makes it relevant for larger 24V control systems, distributed embedded electronics, or industrial subsystems that need higher current capacity at 24V.

Can this model be used for 24V sensors, controllers, and communications hardware in harsh-duty equipment?

Yes, if those 24V loads fit within the supply's 480W and 20A output rating. The IP68 rating, 10G vibration tolerance, and -55°C to +65°C operating range (with load derating at higher temperatures) support use in harsher industrial or mobile-equipment environments.

Is the HEP-480-24 appropriate for outdoor exposure or wet industrial areas?

This version is rated IP68, so it is the more sealed option in the pair. It is also specified for operation from -55°C to +65°C, with load derating at higher temperatures, which supports outdoor or washdown-adjacent conditions when the rest of the system is designed to the same environmental level.

How does the HEP-480-24 compare with other 24V models in the HEP family?

On the HEP-480 sheet, the 24V counterpart is the HEP-480-24A, also 480W and 20A, which is the A-type with built-in potentiometers for 20.4-25.2V voltage and 10-20A current adjustment and an IP65 rating. The HEP-480-24 is the Blank-Type with an IP68 rating and no adjustment; the series also offers 36V, 48V and 54V versions at about 480W.

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

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

Log in to see price

HEP-480-24 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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