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Mean Well

Mean Well HRP-450-12 Power Supply 450W 12V 37.5A

built-in active PFChigh efficiency up to 90%no load power consumption <0.5W~0.75W
SKU HRP-450-12
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Select model — 7 in this family

HRP-450-12
Available to order
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Overview

HRP-450-12 is the 12V output model of this series: rated current 37.5A, rated power 450W, typical efficiency 88%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89.5%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • Built-in cooling Fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote sense function
  • 5 years warranty

Specifications

HRP-450-12Specifications from the official datasheet (2026-04-03 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
37.5A
CURRENT RANGE
0 ~ 37.5A
RATED POWER
450W
RIPPLE & NOISE (max.)Note.2
120mVp-p
VOLTAGE ADJ. RANGE
10.2 ~ 13.8V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.3%
LOAD REGULATION
±0.5%
SETUP, RISE TIME
1800ms, 100ms/230VAC 3600ms, 100ms/115VAC at full load
HOLD UP TIME (Typ.)
16ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.5
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.95/230VAC PF>0.99/115VAC at full load
EFFICIENCY (Typ.)
88%
AC CURRENT (Typ.)
5A/115VAC 2.4A/230VAC
INRUSH CURRENT (Typ.)
35A/115VAC 70A/230VAC
LEAKAGE CURRENT
<1.5mA / 240VAC

PROTECTION

OVERLOAD
105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
14.4 ~ 16.8V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE
Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

DC OK SIGNAL
PSU turn on : 3.3 ~ 5.6V ; PSU turn off : 0 ~ 1V
FAN CONTROL (Typ.)
Load 20±10% or RTH2≧50℃ Fan on

ENVIRONMENT

WORKING TEMP.
-40 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
UL62368-1,TUV BS EN/EN62368-1, AS/NZS62368.1, EAC TP TC 004 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
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/ EN55024, BS EN/ EN61000-6-2, heavy industry level, EAC TP TC 020

OTHERS

MTBF
1323.6K hrs min. Telcordia SR-332 (Bellcore) ; 139.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
218*105*41mm (L*W*H)
PACKING
1.19Kg; 12pcs/15.3Kg/0.82CUFT
Test conditions and notes7
  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 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  5. 5. Derating may be needed under low input voltages. Please check the derating curve for more details.
  6. 6. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
  7. 7. 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

HRP-450-12 Mechanical Specification
Mechanical Specification
HRP-450-12 Block Diagram
Block Diagram
HRP-450-12 Derating Curve
Derating Curve
HRP-450-12 Function Manual
Function Manual

Downloads

FAQ

Can I use the HRP-450-12 for a high-current 12V industrial control system?

Yes, it provides a constant 12V output with up to 37.5A and 450W available, which suits 12V control systems that need higher current capacity. It also accepts 85-264VAC input for broad AC compatibility.

Is the HRP-450-12 suitable for 12V CCTV, security, or access control power distribution?

It can be used for 12V security-related DC distribution when the combined load stays within 450W and 37.5A. Because it is a constant-voltage 12V supply, it is intended for loads that require a fixed 12V DC source.

Can this model power a 12V embedded or electronics test rack?

Yes, if the rack needs a stable 12V constant-voltage source and the total demand is no more than 37.5A or 450W. The 218.0 x 105.0 x 41.0 mm form factor is also relevant where the supply must fit into a compact enclosure.

Is the HRP-450-12 appropriate for outdoor or unsealed environments?

Its operating temperature range is -40°C to +70°C, with load derating at higher ambient temperatures per the derating curve. The provided specifications do not include an IP rating, so the data here does not confirm suitability for direct outdoor, wet, or dusty exposure.

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Mean Well HRP-450-12 Power Supply 450W 12V 37.5A
Mean Well

Mean Well HRP-450-12 Power Supply 450W 12V 37.5A

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HRP-450-12 is the 12V output model of this series: rated current 37.5A, rated power 450W, typical efficiency 88%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89.5%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • Built-in cooling Fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote sense function
  • 5 years warranty

Model

  • 75W 12V
  • 100W 12V
  • 150W 12V
  • 200W 12V
  • 300W 12V
  • 450W 12V
  • 600W 12V
View product

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