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Mean Well RD-50A Power Supply 50W 5V 12V 6A
Overview
RD-50A is the model of this series: rated power 54W, typical efficiency 78%.
Features
- Universal AC input / Full range
- Protections: Short circuit / Overload / Over voltage
- Cooling by free air convection
- LED indicator for power on
- 100% full load burn-in test
- All using 105℃ long life electrolytic capacitors
- Withstand 300VAC surge input for 5 second
- High operating temperature up to 70℃
- Withstand 5G vibration test
- High efficiency, long life and high reliability
- 3 years warranty
Specifications
OUTPUT
- OUTPUT NUMBER
- CH1 / CH2
- DC VOLTAGE CH1
- 5V
- DC VOLTAGE CH2
- 12V
- RATED CURRENT CH1
- 6A
- RATED CURRENT CH2
- 2A
- CURRENT RANGE CH1Note.3
- 0 ~ 6A
- CURRENT RANGE CH2Note.3
- 0 ~ 3A
- RATED POWER
- 54W
- RIPPLE & NOISE (max.) CH1Note.2
- 80mVp-p
- RIPPLE & NOISE (max.) CH2Note.2
- 120mVp-p
- VOLTAGE ADJ. RANGE
- CH1: 4.75 ~ 5.5V
- VOLTAGE TOLERANCE CH1Note.3
- ±2.0%
- VOLTAGE TOLERANCE CH2Note.3
- ±7.0%
- LINE REGULATION CH1Note.4
- ±0.5%
- LINE REGULATION CH2Note.4
- ±1.5%
- LOAD REGULATION CH1Note.5
- ±0.5%
- LOAD REGULATION CH2Note.5
- ±3.0%
- SETUP, RISE TIME
- 500ms, 20ms/230VAC 1200ms, 30ms/115VAC at full load
- HOLD UP TIME (Typ.)
- 60ms/230VAC 10ms/115VAC at full load
INPUT
- VOLTAGE RANGE
- 88 ~ 264VAC 125 ~ 373VDC (Withstand 300VAC surge for 5sec. Without damage)
- FREQUENCY RANGE
- 47 ~ 63Hz
- EFFICIENCY(Typ.)
- 78%
- AC CURRENT (Typ.)
- 1.3A/115VAC 0.8A/230VAC
- INRUSH CURRENT (Typ.)
- COLD START 48A/230VAC
- LEAKAGE CURRENT
- <2mA / 240VAC
PROTECTION
- OVERLOAD
- 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- CH1: 5.75 ~ 6.75V Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -25 ~ +70℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)on +5V output
- VIBRATION
- 10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- UL62368-1, TUV BS EN/EN62368-1, BIS IS 13252(Part 1):2010/IEC 60950-1:2005, EAC TP TC 004 approved
- WITHSTAND VOLTAGE
- I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- 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) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, BS EN/EN61000-6-2 (BS EN/EN50082-2), heavy industry level, EAC TP TC 020
OTHERS
- MTBF
- 2981.9K hrs min. Telcordia SR-332 (Bellcore) ; 594.2K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 99*97*36mm (L*W*H)
- PACKING
- 0.41Kg; 45pcs/19.5Kg/0.94CUFT
Test conditions and notes7
- 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
- 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. Tolerance : includes set up tolerance, line regulation and load regulation, when multi-channel output, it is recommended that CH1 load > 10%.
- 4. Line regulation is measured from low line to high line at rated load.
- 5. Load regulation is measured from 0% to 100% rated load.
- 6. 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 )
- 7. 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
Downloads
FAQ
Can I use the RD-50A in a small industrial control panel with 5V logic and 12V auxiliaries?
Yes, this model is a dual output constant voltage power supply with 5V and 12V outputs, and its total rated power is 54W. The 5V output is rated at 6A, so it fits control panels that need a 5V rail for logic along with a separate 12V rail. Its 88-264VAC input also suits panels used across common AC input ranges.
Is the RD-50A suitable for embedded computing and HMI equipment that needs a regulated 5V supply?
It is a reasonable fit where the main load is a 5V constant voltage rail up to 6A. The 54W power rating makes it better suited to compact embedded or HMI systems than to higher-draw assemblies. Its miniature form factor of 99.0 x 97.0 x 36.0 mm also helps in space-limited enclosures.
Can the RD-50A be used for automation equipment exposed to vibration?
This unit is specified to withstand 5G vibration, which makes it appropriate for industrial or automation equipment where vibration resistance is relevant. It is still a 54W constant voltage model with a 5V 6A main output, so the connected load needs to stay within those ratings. That makes it more appropriate for lower-power control and electronics loads than for larger field power demands.
Is the RD-50A for indoor or outdoor use?
This model has an operating temperature range of -25C to +70C, so it can be used across a wide temperature span. No IP rating is listed in the provided specs, so it should be treated as a power supply for protected indoor enclosures rather than exposed outdoor locations. The environment should keep the unit within its stated temperature range.
How does the RD-50A compare with other Mean Well RD series models?
The RD-50A is a 54W dual output model with 5V 6A and 12V 2A outputs. Other models in the RD-50 series include the RD-50B, which is 53.6W with 5V 4A and 24V 1.4A outputs. The RD-50A is distinguished by its higher 5V current rating and 12V secondary output compared to the RD-50B.
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