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Mean Well

Mean Well SD-500H-48 DC-DC Converter - 500W - 72~144V in 48V out 10.5A

4:1 wide input range1.5~2KVAC isolation by models12V/0.25A auxiliary outputbuilt-in remote ON/OFF control and remote sense
SKU SD-500H-48
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Overview

SD-500H-48 is the 48V output model of this series: rated current 10.5A, rated power 504W, typical efficiency 90%.

Features

  • DC input active surge current limiting
  • Wide 4:1~2:1 DC input range (24V: 19~72VDC, 96V:72~144VDC)
  • Protections: Short circuit / Overload / Over voltage / Over temperature / Input polarity(by fuse)
  • 2000VAC I/O Isolation
  • Forced air cooling by built-in DC fan with fan speed control function
  • Output OK Signal
  • Built-in remote ON-OFF control
  • Built-in remote sense function
  • 3 years warranty

Specifications

SD-500H-48Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE
48V
RATED CURRENT
10.5A
CURRENT RANGE
0 ~ 10.5A
RATED POWER
504W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGE
46 ~ 60V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIME
500ms, 50ms at full load

INPUT

VOLTAGE RANGENote.5
72 ~ 144VDC
EFFICIENCY (Typ.)
90%
DC CURRENT (Typ.)
8A/72VDC 6A/96VDC
CURRENT (AT NO LOAD)
Max. 0.1A/96VDC
INRUSH CURRENT (Typ.)
60A/96VDC

PROTECTION

OVERLOAD
105 ~ 125% rated output power Protection type : Constant current limiting, shut down o/p voltage after about 5 sec., re-power on to recover
OVER VOLTAGE
62 ~ 68V 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

REMOTE ON/OFF CONTROL
Please refer to function manual
OUTPUT OK SIGNAL
Open collector signal low when PSU turns on, max. sink current :10mA

ENVIRONMENT

WORKING TEMP.
-20 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.02%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
IEC62368-1,TUV BS EN/EN62368-1, EAC TP TC 004 approved, design refer to AS/NZS 62368.1
WITHSTAND VOLTAGE
I/P-O/P:2KVAC 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, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,6,8, BS EN/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF
1333.7K hrs min. Telcordia SR-332 (Bellcore) ; 196.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
215*115*50mm (L*W*H)
PACKING
1.15Kg; 12pcs/14.8Kg/0.9CUFT
Test conditions and notes6
  1. 1. All parameters NOT specially mentioned are measured at 48, 96VDC 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. 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

SD-500H-48 Mechanical Specification
Mechanical Specification
SD-500H-48 Block Diagram
Block Diagram
SD-500H-48 Derating Curve
Derating Curve
SD-500H-48 S D - 5 0 0 series
S D - 5 0 0 series
SD-500H-48 S D - 5 0 0 series (2)
S D - 5 0 0 series (2)
SD-500H-48 2.Output OK signal
2.Output OK signal
SD-500H-48 S D - 5 0 0 series
S D - 5 0 0 series
SD-500H-48 +Vo +Vo -Vo -Vo +V ADJ. CN3
+Vo +Vo -Vo -Vo +V ADJ. CN3

Downloads

FAQ

Can I use the SD-500H-48 to power 48V industrial or automation equipment from a 72-144V DC source?

Yes, it is a constant-voltage DC-DC converter with a 48V output rated at 10.5A and 504W. It fits 48V equipment that stays within the 10.5A maximum output current.

Is the SD-500H-48 suitable for higher-power 48V communications or control loads?

It can be used where the load requires 48V DC and the total demand remains at or below 504W. Compared with lower-power 48V units in the broader series list, this model provides 10.5A at 48V for larger constant-voltage loads.

Can this converter be used in 48V systems that need remote control and sensing features?

Yes, the listed features include built-in remote ON/OFF control and remote sense, plus a 12V/0.25A auxiliary output. Those are useful additions when integrating a 48V, 504W supply into a controlled industrial or embedded power system.

Is the SD-500H-48 designed for indoor or outdoor environments?

The specs state an operating temperature range of -20°C to +60°C, which helps define thermal suitability. No IP rating is listed, so the provided data does not establish exposed outdoor or wet-location use.

How does the SD-500H-48 compare with the other SD-500H variants?

Within the SD-500H family, the SD-500H-12 is 480W at 12V and 40A, the SD-500H-24 is 504W at 24V and 21A, and the SD-500H-48 is 504W at 48V and 10.5A. The main difference is the output voltage and current combination offered by each model.

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Mean Well SD-500H-48 DC-DC Converter - 500W - 72~144V in 48V out 10.5A
Mean Well

Mean Well SD-500H-48 DC-DC Converter - 500W - 72~144V in 48V out 10.5A

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SD-500H-48 is the 48V output model of this series: rated current 10.5A, rated power 504W, typical efficiency 90%.

Features

  • DC input active surge current limiting
  • Wide 4:1~2:1 DC input range (24V: 19~72VDC, 96V:72~144VDC)
  • Protections: Short circuit / Overload / Over voltage / Over temperature / Input polarity(by fuse)
  • 2000VAC I/O Isolation
  • Forced air cooling by built-in DC fan with fan speed control function
  • Output OK Signal
  • Built-in remote ON-OFF control
  • Built-in remote sense function
  • 3 years warranty
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