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Mean Well

Mean Well SD-500H-12 DC-DC Converter - 480W - 72~144V in 12V out 40A

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-12
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Overview

SD-500H-12 is the 12V output model of this series: rated current 40A, rated power 480W, typical efficiency 87%.

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-12Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
40A
CURRENT RANGE
0 ~ 40A
RATED POWER
480W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGE
11 ~ 15V
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.)
87%
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
16 ~ 19V 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-12 Mechanical Specification
Mechanical Specification
SD-500H-12 Block Diagram
Block Diagram
SD-500H-12 Derating Curve
Derating Curve
SD-500H-12 S D - 5 0 0 series
S D - 5 0 0 series
SD-500H-12 S D - 5 0 0 series (2)
S D - 5 0 0 series (2)
SD-500H-12 2.Output OK signal
2.Output OK signal
SD-500H-12 S D - 5 0 0 series
S D - 5 0 0 series
SD-500H-12 +Vo +Vo -Vo -Vo +V ADJ. CN3
+Vo +Vo -Vo -Vo +V ADJ. CN3

Downloads

FAQ

Can I use the SD-500H-12 to supply 12V industrial control hardware from a 72-144V DC source?

Yes, it is a constant-voltage DC-DC converter with a 12V output rated at 40A and 480W. That makes it appropriate for 12V industrial control loads that stay within the 40A maximum output.

Is the SD-500H-12 suitable for mobile or embedded systems that need a higher-power 12V rail?

It can be a fit when the system needs 12V DC and the total draw stays within 480W or 40A. The 72-144V input range and 2:1 wide input range are useful where the source voltage varies across a broad DC bus.

Can this converter support 12V automation loads that benefit from remote control and sensing?

Yes, this model includes built-in remote ON/OFF control and remote sense, along with an Output OK signal. Those listed features can be useful in automation systems that need controlled power distribution around a 12V, 480W supply.

Is the SD-500H-12 rated for outdoor or temperature-variable environments?

The listed operating temperature range is -20°C to +60°C, so that part of the environmental range is specified. The provided specs do not list an IP rating, so direct outdoor or washdown suitability is not defined here.

How does the SD-500H-12 compare with the other SD-500H output options?

In 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. These models share the same series features, but the output voltage, current, and total wattage differ by version.

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Mean Well SD-500H-12 DC-DC Converter - 480W - 72~144V in 12V out 40A
Mean Well

Mean Well SD-500H-12 DC-DC Converter - 480W - 72~144V in 12V out 40A

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SD-500H-12 is the 12V output model of this series: rated current 40A, rated power 480W, typical efficiency 87%.

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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