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Mean Well RSD-300B-48 DC-DC Converter - 200.4W - 16.8~31.2V in 48V out

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

SKU:

RSD-300B-48

$128.50 USD

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Description

Features

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

2:1 wide input range

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

4000VDC I / O isolation

Cooling by free air convection

Half encapsulated

The built-in constant current limiting circuit

1U low profile

All using 105°C long life electrolytic

LED indicator for power on

100% full load burn-in test

3 years warranty

General Specification

Line regulation (max.)	± 0.5%
Load regulation (max.)	± 1%
Overload protection Range	105% ~ 135%
Overload protection Type	Constant current limiting recovers automatically after the fault condition is removed
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 ~ + 55°C (refer to output derating curve)
Safety standards	IEC 62368-1, UL 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)	216 x 96.5 x 40mm
Packing	1.19Kg ; 12pcs/15.3Kg/0.97CUFT

Specifications

Brand

Mean Well
Series

RSD Series
Power Rating

200.4 Watt
Output Voltage

48 Volt
Rated Current

5.7 Ampere
Input Voltage

16.8V~31.2V
No of Output

2
Dimming Control

None
Standards Met

CB,CE,EAC,EMC,RCM
Operation Mode

Constant Voltage
Operating Temperature

-40°C~85°C
Warranty

3 Year
Length

8.5 in
Width

3.8 in
Height

1.57 in
Weight

2.62 lb

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Frequently Asked Questions

Can I use the RSD-300B-48 to run 48V telecom or industrial communication equipment from a lower-voltage DC source?

Yes, it accepts 16.8~31.2V input and provides a constant-voltage 48V output. It supports up to 5.7A and 200.4W, which suits many 48V communication and control loads.

Is this converter suitable for 48V radios, gateways, or network edge hardware on mobile platforms?

It is designed for regulated 48V output applications that stay within 5.7A and 200.4W. The listed features include 5G vibration resistance and 70C operation, and the operating temperature range is -40C to +85C.

Can the RSD-300B-48 power 48V automation devices in industrial equipment?

Yes, as long as the DC input is within 16.8~31.2V and the total 48V load remains within 5.7A and 200.4W. Its constant-voltage 48V output fits equipment that expects a fixed 48V supply.

Can I size this model for multiple 48V loads on the same system?

You can, but the combined load must stay within 5.7A and 200.4W at 48V output. That makes it better suited to moderate 48V loads rather than higher-current 48V distribution.

How well does the RSD-300B-48 handle harsh environments?

The specified operating range is -40C to +85C, and the features list includes 70C operation and 5G vibration resistance. No IP rating is provided, so the specs do not define outdoor sealing or ingress protection.