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Mean Well

Mean Well RSD-200D-12 DC-DC Converter - 200.4W - 67.2~143V in 12V out 16.7A

miniature sizeeconomicalwithstand 5G vibration and 70°C operation
SKU RSD-200D-12
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Overview

RSD-200D-12 is the 12V output model of this series: rated current 16.7A, rated power 200.4W, typical efficiency 91%.

Features

  • Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
  • 2:1 wide input range
  • Protections: Short circuit / Overload / Over voltage / Over temperature / Input reverse polarity
  • 4000VDC I/O isolation
  • Cooling by free air convection
  • Half encapsulated
  • Built-in constant current limiting circuit
  • 1U low profile 40mm
  • All using 105℃ long life electrolytic capacitors
  • LED indicator for power on
  • 100% full load burn-in test
  • 3 years warranty

Specifications

RSD-200D-12Specifications from the official datasheet (2025-07-18 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
16.7A
CURRENT RANGE
0 ~ 16.7A
RATED POWER
200.4W
RIPPLE & NOISE (max.)Note.2
120mVp-p
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATION
±0.2%
LOAD REGULATION
±1.0%
SETUP, RISE TIME
800ms, 50ms at full load
HOLD UP TIME (Typ.)
Please refer to page 3 Hold up Time( Load de-rating curve )

INPUT

VOLTAGE RANGE CONTINUOUS
67.2 ~ 143VDC
VOLTAGE RANGE 1 SEC.
57.6 ~ 154VDC
EFFICIENCY (Typ.)
91%
DC CURRENT (Typ.)
2.1A/110V
INRUSH CURRENT (Typ.)
45A/110VDC
INTERRUPTION OF VOLTAGE SUPPLY
EN50155:2021-Comply with S1 level

PROTECTION

OVERLOAD
105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
13.8 ~ 16.2V 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

ENVIRONMENT

WORKING TEMP.
-40 ~ +55℃ (no derating) ; +70℃ @ 60% load by free air convection ; +70℃ no derating with external base plate, TX class compliance
WORKING HUMIDITY
5 ~ 95% RH non-condensing
STORAGE TEMP.
-40 ~ +85℃
TEMP. COEFFICIENT
± 0.03%/℃ (0 ~ 50℃ )
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes ; Mounting : compliance to IEC61373
OPERATING ALTITUDE
5000 meters

SAFETY & EMC (Note 4)

SAFETY STANDARDS
UL 62368-1, IEC 62368-1, AS/NZS 62368-1, EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
WITHSTAND VOLTAGE
I/P-O/P:4KVDC I/P-FG:2.5KVDC O/P-FG:2.5KVDC
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) Conduction Emission: Class A, Radiation Emission: Class B, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8, BS EN/EN55035, light industry level, EAC TP TC 020
RAILWAY STANDARD
BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC ;BS EN/EN45545-2 for fire protection

OTHERS

MTBF
2125.5K hrs min. Telcordia SR-332 (Bellcore) ; 218.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
191*86*40mm (L*W*H)
PACKING
0.94Kg; 12pcs/12.3Kg/0.73CUFT
Test conditions and notes6
  1. 1. All parameters NOT specially mentioned are measured at 24,48,110VDC 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. Strongly recommended that external output capacitance should not exceed 5000uF. (Only for: RSD-200-12)
  6. 6. 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

RSD-200D-12 Mechanical Specification
Mechanical Specification
RSD-200D-12 Block Diagram
Block Diagram
RSD-200D-12 Input Under-Voltage Protection
Input Under-Voltage Protection
RSD-200D-12 Hold-up Time
Hold-up Time
RSD-200D-12 Efficiency vs Load & Vin Curve
Efficiency vs Load & Vin Curve
RSD-200D-12 Overload Protection
Overload Protection
RSD-200D-12 LOAD(%)
LOAD(%)
RSD-200D-12 R S D - 2 0 0 series
R S D - 2 0 0 series
RSD-200D-12 EN45545-2 Fire Test Conditions
EN45545-2 Fire Test Conditions

Downloads

FAQ

Can I use the RSD-200D-12 to power 12V PLCs, relays, and control circuits from a 67.2~143V DC source?

Yes, this is a constant-voltage 12V DC-DC converter rated for 200.4W and 16.7A output. It is suitable for 12V control and automation loads when the source is within 67.2~143V and the total load stays within 16.7A.

Is the RSD-200D-12 suitable for 12V embedded systems or industrial computers on high-voltage DC buses?

It can be a fit when the upstream DC bus falls within 67.2~143V and the equipment needs a regulated 12V rail. The 200.4W capacity and 16.7A output make it better suited to heavier 12V electronics than lower-current 12V converters.

Would this converter work for 12V mobile, transit, or battery-based automation equipment?

It is aligned with mobile or industrial applications that need 12V output from a higher-voltage DC source. The features list 5G vibration resistance and 70°C operation, which supports use in more demanding mechanical and thermal conditions.

Can the RSD-200D-12 supply multiple 12V sensors, controllers, and communication devices at once?

It can support multiple 12V loads in one system as long as the combined demand remains within 200.4W and 16.7A. Because it is a constant-voltage 12V model, it is intended for 12V equipment rather than mixed-voltage loads.

How does the RSD-200D-12 compare with the other RSD-200D models?

In the RSD-200D family, the RSD-200D-12 is rated at 200.4W with 12V output at 16.7A, the RSD-200D-24 is rated at 201.6W with 24V output at 8.4A, and the RSD-200D-48 is rated at 201.6W with 48V output at 4.2A. The family mainly separates by output voltage and the current available at that voltage.

Is the RSD-200D-12 appropriate for outdoor or temperature-extreme environments?

The unit is specified for -40°C to +55°C operation with no derating, and up to +70°C at 60% load by free air convection. No IP rating is listed, so exposed outdoor placement or washdown exposure should not be assumed without a protective enclosure.

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Mean Well RSD-200D-12 DC-DC Converter - 200.4W - 67.2~143V in 12V out 16.7A
Mean Well

Mean Well RSD-200D-12 DC-DC Converter - 200.4W - 67.2~143V in 12V out 16.7A

Log in to see price

RSD-200D-12 is the 12V output model of this series: rated current 16.7A, rated power 200.4W, typical efficiency 91%.

Features

  • Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
  • 2:1 wide input range
  • Protections: Short circuit / Overload / Over voltage / Over temperature / Input reverse polarity
  • 4000VDC I/O isolation
  • Cooling by free air convection
  • Half encapsulated
  • Built-in constant current limiting circuit
  • 1U low profile 40mm
  • All using 105℃ long life electrolytic capacitors
  • LED indicator for power on
  • 100% full load burn-in test
  • 3 years warranty
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