At a glance
- Output Voltage
- 48 V
- Rated Output Current
- 4.2 A
- Rated Output Power
- 201.6 W
- Efficiency (typ.)
- 91%
- Operating Temperature
- -40 to +55 °C (no derating)
- Input Voltage Range
- 67.2 to 143 V DC (continuous)
MEAN WELL RSD-200D-48 Enclosed DC-DC Converter, 48 V, 4.2 A, 201.6 W
Price on request
At a glance
- Output Voltage
- 48 V
- Rated Output Current
- 4.2 A
- Rated Output Power
- 201.6 W
- Efficiency (typ.)
- 91%
- Operating Temperature
- -40 to +55 °C (no derating)
- Input Voltage Range
- 67.2 to 143 V DC (continuous)
Runs equipment on trains and other railway vehicles from the onboard battery or DC supply, giving a regulated DC output. 201.6 W enclosed DC-DC converter with a 48 V DC output rated at 4.2 A.
Part of the MEAN WELL RSD-200 series. Compare all 9 models
Include the required quantity and configuration in your quote request. Price and availability will be confirmed in the quotation.
- WarrantyManufacturer warranty under MEAN WELL's terms: 3 years. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
Overview
What it is
The MEAN WELL RSD-200D-48 is a 201.6 W enclosed DC-DC converter from the RSD-200 series (200 W Railway Single Output DC-DC Converter). It provides a 48 V DC output with up to 4.2 A of rated current.
What it is used for
Enclosed DC-DC converters run equipment from a DC source such as a battery bank or a different DC rail. MEAN WELL designs this series for railway applications; see the datasheet for the railway standards it meets.
Key Specifications
- Output: 48 V, 4.2 A rated current, 201.6 W rated power.
- Typical efficiency: 91%.
- Operating temperature: -40 to +55 °C (no derating); +70 °C @ 60% load by free air convection; +70 °C no derating with external base plate, TX class compliance.
- Dimensions: 191 x 86 x 40 mm (L x W x H).
Buying considerations
Choose a rated current with headroom above the total load of the connected devices, and check the derating curve in the datasheet if the supply will run hot or at low input voltage. Other output voltages and power ratings in the same series are listed on this page.
Installation considerations
MEAN WELL treats this unit as a component to be installed inside final equipment, so approvals and EMC performance should be confirmed for the complete installation. Wiring, safety and EMC details are in the official datasheet linked below.
Features

Size and fit
- Dimensions
- 191 x 86 x 40 mm (L x W x H)
- Weight
- 0.94 kg
- Mounting
- Enclosed
Technical specifications
Key facts
- What is it?
- DC/DC ConvertersBrand MEAN WELL, model RSD-200D-48
- What does it output?
- 48 V, 4.2 A, 201.6 W
- What input does it accept?
- 67.2 to 143 V DC (continuous)
- How does it mount?
- Enclosed
- Which documents are available?
- Datasheet, certificate Open documents
RelatedSeriesMEAN WELL RSD-200 series, 9 modelsDocumentsAll MEAN WELL documents
Output
- Output Voltage
- 48 V
- Rated Output Current
- 4.2 A
- Output Current Range
- 0 to 4.2 A
- Rated Output Power
- 201.6 W
- Output Voltage Tolerance
- ±2.0%
- Ripple and Noise (max.)
- 180 mVp-p
- Line Regulation
- ±0.5%
- Load Regulation
- ±1.0%
- Efficiency (typ.)
- 91%
Protection
- Withstand Voltage
- I/P-O/P: 4KVDC I/P-FG: 2.5KVDC O/P-FG: 2.5KVDC
Environment
- Operating Temperature
- -40 to +55 °C (no derating); +70 °C @ 60% load by free air convection; +70 °C no derating with external base plate, TX class compliance
- Operating Humidity
- 5 to 95% RH non-condensing
Physical
- Dimensions
- 191 x 86 x 40 mm (L x W x H)
- Weight
- 0.94 kg
- Mounting
- Enclosed
Approvals
- MTBF
- 2125.5K hrs min. Telcordia SR-332 (Bellcore)
Other
- Series
- RSD-200
- Input Voltage Range
- 67.2 to 143 V DC (continuous); 57.6 to 154 V DC (1 s)
- Warranty
- Manufacturer warranty under MEAN WELL's terms: 3 years. How claims work
Product attributes and shipping details
| Brand | MEAN WELL |
|---|---|
| Power Output | 201.6 W |
Downloads
Documentation
- RSD-200 series datasheetDatasheet · Family · meanwell.comDownload
Certificate and compliance document (1)
- RSD-200 CE declaration of conformityCertificate · Family · meanwell.comDownload
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