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Mean Well RSD-500B-12 DC-DC Converter - 420W 16.8-33.6V DC in 12V out

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

SKU:

RSD-500B-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

16.8V~33.6V
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

::specification::

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Frequently Asked Questions

Can I use the RSD-500B-12 to run a 12V automation cabinet, DC motor control accessories, or industrial electronics from a 24V battery system?

This converter is designed for 12V constant-voltage output at up to 35A, with a total rating of 420W. Its input range is listed as 16-33VAC in the provided specs and product name shows 16.8-33.6V DC in, so it is aimed at a lower-voltage source range rather than a wide 72V bus. It is better suited to higher-current 12V loads than the smaller 30W models.

Is the RSD-500B-12 appropriate for high-current 12V telecom, radio, or control equipment?

It can fit 12V equipment that needs substantially more current, because the output is rated for 35A and 420W. That is a much larger capacity than 12V models such as the 100.8W, 150W, 200.4W, and 201.6W units listed in the same series. The load still has to be a constant-voltage 12V load within the 35A limit.

Can this converter handle 12V loads in transportation, marine, or heavy industrial environments?

The operating temperature range is -40C to +80C, which is broader than the smaller RSD-30L units rated to +70C. The listed features also include 5G vibration resistance, which supports use in equipment exposed to motion or vibration. Electrically, it is intended for 12V loads up to 35A and 420W.

Is the RSD-500B-12 suitable for outdoor equipment or exposed installations?

Its temperature rating of -40C to +80C supports demanding thermal conditions. However, no IP rating is provided in the specs, so outdoor exposure, washdown, or direct weather contact is not confirmed here. The data supports temperature capability, not enclosure sealing.

How does the RSD-500B-12 compare with the other high-power 12V and related RSD-500 models?

For the 500-series siblings listed here, RSD-500B-12 is 420W at 12V and 35A, RSD-500B-24 is 420W at 24V and 17.5A, and RSD-500B-48 is 422.4W at 48V and 8.8A. The related RSD-500C-12 is 420W at 12V and 35A, while RSD-500D-12 is also 420W at 12V and 35A. The 24V and 48V C and D variants increase to 460.8W or 499.2W depending on model, with corresponding current changes.

Model	Power	Voltage	Current	IP Rating
Mean Well RSD-500B-48 DC-DC Converter - 422.4W 16.8-33.6V DC in 48V out	422.4W	48V	8.8A	Indoor	View
Mean Well RSD-500B-24 DC-DC Converter - 420W 16.8-33.6V DC in 24V out	420W	24V	17.5A	Indoor	View

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