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Mean Well

Mean Well HRP-300-48 Power Supply 336W 48V 7A

built-in active PFChigh efficiency up to 90%no load power consumption <0.5W~0.75W
SKU HRP-300-48
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Select model — 7 in this family

HRP-300-48
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Overview

HRP-300-48 is the 48V output model of this series: rated current 7A, rated power 336W, typical efficiency 89%.

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-300-48Specifications from the official datasheet (2026-04-03 edition)

OUTPUT

DC VOLTAGE
48V
RATED CURRENT
7A
CURRENT RANGE
0 ~ 7A
RATED POWER
336W
RIPPLE & NOISE (max.)Note.2
250mVp-p
VOLTAGE ADJ. RANGE
40.8 ~ 55.2V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.2%
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 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.)
89%
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
57.6 ~ 67.2V 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. 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. 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-300-48 Mechanical Specification
Mechanical Specification
HRP-300-48 Block Diagram
Block Diagram
HRP-300-48 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the HRP-300-48 for a 48V industrial or automation system?

Yes, this model provides constant voltage 48V output at up to 7A and 336W. It is intended for equipment that specifically requires a 48V DC bus, not lower-voltage 12V, 15V, 24V, or 36V loads.

Is the HRP-300-48 a fit for 48V communications or embedded equipment?

It can be a fit where the equipment needs regulated 48V DC and the total load remains within 7A and 336W. The 85-264VAC input range also supports use across different AC supply conditions.

Would the HRP-300-48 work for a centralized 48V DC subsystem in a cabinet or enclosure?

Yes, as long as the combined 48V load stays within 336W and 7A. Its 199.0 × 105.0 × 41.0 mm size and 0.95 kg weight can be useful where enclosure space is constrained.

Is the HRP-300-48 suitable for outdoor use or wide temperature conditions?

The specified operating range is -40°C to +70°C, with output derating at higher ambient temperatures per the derating curve. No IP rating is listed in the provided data, so it should be used in indoor or protected enclosures rather than exposed outdoor locations.

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Mean Well HRP-300-48 Power Supply 336W 48V 7A
Mean Well

Mean Well HRP-300-48 Power Supply 336W 48V 7A

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HRP-300-48 is the 48V output model of this series: rated current 7A, rated power 336W, typical efficiency 89%.

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

Model

  • 75W 48V
  • 100W 48V
  • 150W 48V
  • 200W 48V
  • 300W 48V
  • 450W 48V
  • 600W 48V
View product

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