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Mean Well

Mean Well HEP-185-36A Power Supply 187.2W 36V 5.2A

fanless designhigh efficiency up to 96%rugged metal case with IP65 design(IP68 option available)withstand 10G vibrationsuitable for harsh environment
SKU HEP-185-36A
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Select model — 14 in this family

HEP-185-36A
Available to order
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Overview

HEP-185-36A is the 36V output model of this series: rated current 5.2A, 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-185-36ASpecifications from the official datasheet (2025-10-10 edition)

OUTPUT

DC VOLTAGE
36V
RATED CURRENT
5.2A
RATED POWER
187.2W
RIPPLE & NOISE (max.)Note.2
200mVp-p
VOLTAGE ADJ. RANGENote.5
33 ~ 40V
CURRENT ADJ. RANGE
2.6 ~ 5.2A
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
41 ~ 46V
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-185-36A Block Diagram
Block Diagram
HEP-185-36A Mechanical Specification
Mechanical Specification

Typical applications

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

Downloads

FAQ

Can the HEP-185-36A be used in a 36V industrial control or automation system?

Yes, it is a 36V constant-voltage power supply rated for 187.2W and 5.2A. That fits many 36VDC automation, control, and embedded loads that are designed around a fixed 36V bus. Its 90-264VAC input (277VAC operational) also supports use across a wide range of AC mains conditions.

Is the HEP-185-36A suitable for 36V process equipment or enclosed machine electronics?

It can be a fit when the equipment requires 36V constant voltage and stays within 5.2A and 187.2W. The IP65 rating helps where the unit is exposed to dust or water. Its 10G vibration rating also suits harsh industrial environments.

Can I use the HEP-185-36A for a 36V lighting or display load that needs more than 150W?

Yes, if the system is a 36V constant-voltage load and the total demand does not exceed 187.2W or 5.2A. That rating sits above the 150W level the load requires. That extra margin can matter on larger 36V loads.

Is the HEP-185-36A meant for indoor use only, or can it handle harsher environments?

This version carries an IP65 water-resistant rating, so it is intended for dusty or wet industrial locations rather than dry indoor spaces only. It is specified for -55°C to +70°C operation, subject to the derating curve. If the application calls for the more sealed variant, the sibling HEP-185-36 is the IP68 version.

What distinguishes the HEP-185-36A from the other HEP-185 models?

The HEP-185 range 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-185-36A matches the HEP-185-36 electrically at 187.2W, 36V, and 5.2A. The key selection factors are the required output voltage and the enclosure style, with this model using IP65 water-resistant construction.

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Mean Well HEP-185-36A Power Supply 187.2W 36V
Mean Well

Mean Well HEP-185-36A Power Supply 187.2W 36V 5.2A

Log in to see price

HEP-185-36A is the 36V output model of this series: rated current 5.2A, 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 36V
  • 100W 36V Adjustable
  • 150W 36V
  • 150W 36V Adjustable
  • 185W 36V
  • 185W 36V Adjustable
  • 240W 36V
  • 240W 36V Adjustable
  • 320W 36V
  • 320W 36V Adjustable
  • 480W 36V
  • 480W 36V Adjustable
  • 600W 36V
  • 600W 36V Adjustable
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