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Mean Well HRP-300-12 Power Supply 324W 12V 27A

built-in active PFChigh efficiency up to 90%no load power consumption <0.5W~0.75W

SKU HRP-300-12

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Select model — 7 in this family

HRP-300-12

HRP-75-12 75W 12V Low stock

HRP-100-12 100W 12V Low stock

HRP-150-12 150W 12V Low stock

HRP-200-12 200W 12V Backorder

HRP-300-12 300W 12V Backorder

HRP-450-12 450W 12V Backorder

HRP-600-12 600W 12V Backorder

Product variants

Available to order

Overview

HRP-300-12 is the 12V output model of this series: rated current 27A, rated power 324W, typical efficiency 88%.

Features

Universal AC input / Full range
Built-in active PFC function, PF>0.95
High efficiency up to 89%
Withstand 300VAC surge input for 5 seconds
Protections: Short circuit / Overload / Over voltage / Over temperature
Built-in constant current limiting circuit
1U low profile 41mm
Built-in cooling fan ON-OFF control
Built-in DC OK signal
Built-in remote sense function
5 years warranty

Specifications

HRP-300-12Specifications from the official datasheet (2026-04-03 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 27A
CURRENT RANGE: 0 ~ 27A
RATED POWER: 324W
RIPPLE & NOISE (max.)^Note.2: 120mVp-p
VOLTAGE ADJ. RANGE: 10.2 ~ 13.8V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.3%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME: 1000ms, 50ms/230VAC 2500ms, 50ms/115VAC at full load
HOLD UP TIME (Typ.): 16ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.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.): 3.5A/115VAC 1.8A/230VAC
INRUSH CURRENT (Typ.): 35A/115VAC 70A/230VAC
LEAKAGE CURRENT: <1.2mA / 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 turns on : 3.3 ~ 5.6V ; PSU turns off : 0 ~ 1V
FAN CONTROL (Typ.): Load 35±15% 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
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, EAC TP TC 004, AS/NZS 62368.1 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/ EN55035, BS EN/ EN61000-6-2, heavy industry level, EAC TP TC 020

OTHERS

MTBF: 1487.1K hrs min. Telcordia SR-332 (Bellcore) ; 200.4K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 199*105*41mm (L*W*H)
PACKING: 0.95Kg;15pcs/15.3Kg/0.83CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
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. Tolerance : includes set up tolerance, line regulation and load regulation.
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. Derating may be needed under low input voltages. Please check the derating curve for more details.
6. 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-300-12 Mechanical Specification — Mechanical Specification

HRP-300-12 Block Diagram — Block Diagram

HRP-300-12 Derating Curve — Derating Curve

Downloads

Certificates4

EMC Certificate (HRP-300)(EN) PDF Download

UL Certificate(HRP-300)(EN) PDF Download

CB Certificate (HRP-300)(EN) PDF Download

TUV Certificate(HRP-300)(EN) PDF Download

Test reports1

Test Report(HRP-300-12)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the HRP-300-12 for a 12V industrial automation panel?

Yes, if the panel devices require 12V DC constant voltage and the total draw stays within 27A and 324W. That output level suits larger 12V automation and control loads.

Is the HRP-300-12 suitable for 12V CCTV, access control, or building systems?

It can be used for 12V constant voltage security or building-control equipment when the combined load remains within 27A and 324W. The key match is that the connected equipment must be designed for 12V DC input.

Can this model power 12V embedded computing or communications hardware?

It fits 12V DC electronics that need a constant voltage supply with relatively high available current. The unit is rated at 12V, 27A, and 324W, so it works best where the equipment stays inside those limits.

Can the HRP-300-12 be used in outdoor or high-temperature locations?

Its operating temperature range is -40°C to +70°C, with output derating at higher ambient temperatures per the derating curve, which supports use across demanding temperature conditions in protected spaces. These specs do not state an IP rating, so open outdoor installation suitability is not confirmed by the product data shown here.

Payment & Security

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Mean Well HRP-300-7.5 Power Supply 300W 7.5V 40A	300W	7.5V	40A	View
Mean Well HRP-300-5 Power Supply 300W 5V 60A	300W	5V	60A	View
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Mean Well HRP-300-12 Power Supply 324W 12V 27A

Select model — 7 in this family

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

FUNCTION

ENVIRONMENT

SAFETY & EMC (Note 4)

OTHERS

Technical drawings

Downloads

Certificates4

Test reports1

Catalogues1

FAQ

Payment & Security

Other HRP-300 Models

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Mean Well HRP-300-12 Power Supply 324W 12V 27A

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