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Mean Well RSD-500D-12 DC-DC Converter - 420W 67.2-154V DC in 12V out

miniature size, economical, withstand 5G vibration and 70°C operation

SKU:

RSD-500D-12

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Description

Features

Compliance with BS EN/EN50155 and BS EN/EN45545-2 railway standard

1U low profile(25mm

2:1 wide input range

Fanless design, half encapsulated, cooling by free air convection

-40~+80℃ wide operating temperature

DC output adjustable

Protections: Short circuit / Overload / Over voltage / Input reverse polarity / Over temp.

4000VDC I / O isolation

Half encapsulated, cooling by free air convection

Operating altitude up to 5000 meters (Note.5)

LED indicator for power on

3 years warranty

General Specification

Line regulation (max.)	± 0.5%
Load regulation (max.)	± 1.0%
Overload protection Range	105% ~ 135%
Overload protection Type	Constant current limiting 105~135% rated output power with auto-recovery
Over-voltage protection	115% to 135% Shutdown O / P voltage, re-power on to recover
Withstand voltage	I / PO / P: 4kVDC, I / P-FG: 2.5kVDC, O / P-FG: 2.5kVDC, 1 minute
Isolation resistance	I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
Working temperature	-40 ~ + 80°C (refer to output derating curve)
Safety standards	UL62368-1, IEC 62368-1, AS/NZS 62368-1, EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
EMC standards	EN55022 class B, EN50121-3-2, EN61000-4-2,3,4,5,6,8
Railway standard	EN50155 / IEC60571
Dimension (LxWxH) (mm)	237 x 100 x 41mm
Packing	1.45Kg;10pcs/15.5Kg/0.8CUFT

Specifications

Brand

Mean Well
Series

RSD Series
Power Rating

420 Watt
Output Voltage

12 Volt
Rated Current

35 Ampere
Input Voltage

67.2V~154V
Standards Met

CB,CE,EAC,SAA,UL
Operation Mode

Constant Voltage
Operating Temperature

-40°C~80°C
Warranty

3 Year
Length

23.7 cm
Width

10 cm
Height

4.1 cm
Weight

1.45 kg

File Downloads

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Frequently Asked Questions

Can I use the RSD-500D-12 to power 12V industrial control electronics from a 67.2-154V DC source?

Yes. The RSD-500D-12 is designed for a 67.2-154V DC input range and provides constant 12V output. Its 420W power rating and 35A output current make it suitable for higher-current 12V control and embedded loads within those limits.

Is this model appropriate for 12V embedded systems on higher-voltage DC platforms?

It is a strong fit when the source is in the 67.2-154V DC range and the load requires regulated 12V output. The converter can deliver up to 35A with a total power limit of 420W, which supports heavier 12V electronic loads. Its constant-voltage operation is intended for systems that need a fixed 12V rail.

Can the RSD-500D-12 be used in rail, vehicle, or industrial equipment exposed to vibration?

Yes, for 12V applications within 420W and 35A. The product features include 5G vibration resistance, which is relevant for mobile, transport, or mechanically active equipment. The wide -40°C to +80°C operating range also supports demanding industrial environments.

Is the RSD-500D-12 suitable for outdoor use or extreme temperatures?

The converter is specified for operation from -40°C to +80°C, and the feature list includes 70°C operation. That supports use in equipment exposed to very low or high ambient temperatures. No IP rating is listed, so the provided specs do not confirm direct outdoor exposure capability.

How does the RSD-500D-12 compare with the other 12V models in the RSD 500 series?

For 12V output, the sibling models are RSD-500B-12 at 420W, 12V, and 35A, RSD-500C-12 at 420W, 12V, and 35A, and RSD-500D-12 at 420W, 12V, and 35A. Their 12V output ratings are the same. The meaningful series difference is the input range family, not the 12V output power or current.

Model	Power	Voltage	Current	IP Rating
Mean Well RSD-500D-48 DC-DC Converter - 499.2W 67.2-154V DC in 48V out	499.2W	48V	10.4A	Indoor	View
Mean Well RSD-500D-24 DC-DC Converter - 499.2W 67.2-154V DC in 24V out	499.2W	24V	20.8A	Indoor	View

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