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Mean Well

Mean Well HEP-185-24A Power Supply 187.2W 24V 7.8A

fanless designhigh efficiency up to 96%rugged metal case with IP65 design(IP68 option available)withstand 10G vibrationsuitable for harsh environment
SKU HEP-185-24A
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Select model — 15 in this family

HEP-185-24A
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Overview

HEP-185-24A is the 24V output model of this series: rated current 7.8A, rated power 187.2W, typical efficiency 93.5%.

HEP-185 is a 185W 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 94%, enabling HEP-185 perfectly work between -55℃ and +70℃ under free air convection.

Features

  • Universal AC input / Full range
  • Built-in active PFC function
  • High efficiency up to 94%
  • Fanless design, cooling by free air convection
  • -55~+70℃ 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
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Operating altitude up to 5000 meters (Note.9)
  • 6 years warranty

Specifications

HEP-185-24ASpecifications from the official datasheet (2025-10-10 edition)

OUTPUT

DC VOLTAGE
24V
RATED CURRENT
7.8A
RATED POWER
187.2W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGENote.5
22 ~ 27V
CURRENT ADJ. RANGE
3.9 ~ 7.8A
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIMENote.7
1000ms,50ms/115VAC 500ms,50ms/230VAC at full load
HOLD UP TIME (Typ.)
16ms at full load 230VAC /115VAC

INPUT

VOLTAGE RANGENote.4
90~264VAC (277VAC operational) 128~370VDC(390VDC operational)
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.98/115VAC, PF>0.95/230VAC, PF>0.92/277VAC at full load
EFFICIENCY (Typ.)
93.5%
AC CURRENT (Typ.) 12V
1.8A / 115VAC 0.8A / 230VAC 0.7A / 277VAC
AC CURRENT (Typ.) 15V ~ 54V
2.1A / 115VAC 1A / 230VAC 0.8A / 277VAC
INRUSH CURRENT(Typ.)
COLD START 65A at 230VAC
LEAKAGE CURRENT
<0.75mA / 277VAC

PROTECTION

OVERLOAD
105 ~ 125% Protection type : Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT
Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
28 ~ 34V
OVER TEMPERATURE
Shut down o/p voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.
-55 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY
-60 ~ +80℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 60℃)
VIBRATION
20 ~ 500Hz, 10G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDSNote.6,9
UL62368-1, IEC62368-1, IP65 (or IP68 for HEP-185 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
1967.4K hrs min. Telcordia SR-332(Bellcore) ; 164.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
228*68*38.8mm (L*W*H)
PACKING
1.15Kg; 12pcs/14.8Kg/0.8CUFT

Certifications & ratings

IP level
IP65 IP68 (Optional)
Test conditions and notes10
  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. Derating may be needed under low input voltages. Please check the static characteristics for more details.
  5. 5. A type only.
  6. 6. Safety and EMC design refer to BS EN/EN60598-1, CNS15233, GB7000.1, FCC part18.
  7. 7. Length of set up time is measured at cold first start. Turning ON/OFF the power supply may lead to increase of the set up time.
  8. 8. The power supply is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
  9. 9. The water protection level test for the IP68 rating is performed 1000mm below the surface of the water for 1 month.
  10. 10. 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-185-24A Block Diagram
Block Diagram
HEP-185-24A Mechanical Specification
Mechanical Specification

Typical applications

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

Downloads

FAQ

Can I use the HEP-185-24A for a 24V factory automation cabinet or machine-control system?

Yes, it is a 24V constant-voltage power supply rated for 187.2W and 7.8A, which fits many 24VDC automation loads. The wide 90-264VAC input (277VAC operational) helps when the incoming AC supply varies across sites. Its IP65-rated enclosure also suits industrial equipment where a dust-tight, water-resistant, low-maintenance supply is preferred.

Is the HEP-185-24A a good fit for 24V security, access control, or industrial communications equipment?

It can be used where the equipment requires a regulated 24VDC source and the total load stays within 187.2W and 7.8A. That makes it a fit for many 24V control, access, and communications devices that share a common DC bus. The constant-voltage output is the key requirement for those types of loads.

Is the HEP-185-24A suitable for outdoor or washdown-prone locations?

This version is rated IP65 water-resistant, so it is better suited to dusty or wet industrial environments than a non-sealed power supply. It is specified for operation from -55°C to +70°C, subject to the derating curve. For applications needing a more fully sealed version, the sibling HEP-185-24 is the IP68 model.

What are the main differences between the HEP-185-24A and the other HEP-185 models?

The HEP-185 family includes 156W at 12V and 13A, 172W at 15V and 11.5A, 187.2W at 24V and 7.8A, 187.2W at 36V and 5.2A, 187.2W at 48V and 3.9A, and 186.3W at 54V and 3.45A. The HEP-185-24A has the same 187.2W, 24V, and 7.8A electrical rating as the HEP-185-24. The model choice mainly comes down to required output voltage and current, with this version using an IP65 water-resistant enclosure.

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Mean Well HEP-185-24A Power Supply 187.2W 24V
Mean Well

Mean Well HEP-185-24A Power Supply 187.2W 24V 7.8A

Log in to see price

HEP-185-24A is the 24V output model of this series: rated current 7.8A, rated power 187.2W, typical efficiency 93.5%.

HEP-185 is a 185W 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 94%, enabling HEP-185 perfectly work between -55℃ and +70℃ under free air convection.

Features

  • Universal AC input / Full range
  • Built-in active PFC function
  • High efficiency up to 94%
  • Fanless design, cooling by free air convection
  • -55~+70℃ 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
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Operating altitude up to 5000 meters (Note.9)
  • 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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