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Mean Well DR-RDN20 Redundancy Module Power Supply 20A - DIN Rail
Overview
Features
- Suitable for redundant operation of 24V system
- Installed on DIN Rail TS35 / 7.5 or 15
- Relay contact signal output and LED indicator for input failure alarm
- Cooling by free air convection
- 3 years warranty
Specifications
OUTPUT
- REVERSE VOLTAGE (max.)
- 30V
- OUTPUT CURRENT (max.)
- 20A
- VOLTAGE DROP
- 0.6V
- LED INDICATORS
- Two green LEDs indicating each input is "OK or fail"
INPUT
- INPUT VOLTAGE RANGE
- 21 ~ 28V
- NUMBER OF INPUTS
- Two
- INPUT CURRENT (max.)
- 20A per input
FUNCTION
- INPUT VOLTAGE ALARM
- When input is > 20V(±5%) or < 30V(±5%) relay contacts
- RELAY CONTACT RATING (max.)
- 30VDC, 1A
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +70℃
- WORKING HUMIDITY
- 20 ~ 90% RH non condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes ; Mouning: Compliance to IEC60068-2-6
SAFETY & EMC
- SAFETY STANDARDSNote 2
- UL508, AS/NZS 62368.1, EAC TP TC 004 approved
- WITHSTAND VOLTAGE
- Terminal-Chassis :0.5KVAC, Relay Contacts-Terminal :0.5KVAC
- ISOLATION RESISTANCE
- Terminal-Chassis :>100M Ohms / 500VDC / 25℃/ 70% RH
- EMC EMISSION
- Compliance to EN55032 (CISPR32) Class B, EN61000-3-2,-3, EAC TP TC 020
- EMC IMMUNITY
- Compliance to EN61000-4-2,3,4,5,6,8,11, heavy industry level, EAC TP TC 020
OTHERS
- MTBF
- 2315.6K hrs min. Telcordia SR-332 (Bellcore) ; 996.9K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 55.5*125.2*100mm (W*H*D)
- PACKING
- 0.5Kg; 20pcs/11Kg/1.49CUFT
Test conditions and notes3
- 1. All parameters NOT specially mentioned are measured at 24VDC input, rated load and 25℃ of ambient temperature.
- 2. 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 http://www.meanwell.com)
- 3. 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
What is the Mean Well DR-RDN20 used for?
The DR-RDN20 is a 20A power supply redundancy module for DIN rail applications. It accepts two DC inputs of 21 ~ 28V, so it suits 24V systems, and can be used for 1+1 or 1+N redundancy or with a single PSU to increase reliability.
What are the main electrical ratings of the DR-RDN20?
This model is rated for a maximum output current of 20A, with two inputs of 21 ~ 28V at up to 20A each, a 0.6V voltage drop and a 30V maximum reverse voltage. Buyers comparing system requirements should note that it passes the connected supply voltage through rather than setting its own output voltage.
Is the DR-RDN20 designed for DIN rail mounting?
Yes. The DR-RDN20 is specified for DIN rail use and is described as fitting TS35 / 7.5 or 15 rail formats. That makes it appropriate for industrial control and power distribution enclosures that use standard DIN rail hardware.
Does the DR-RDN20 provide status indication for input failure?
Yes. This model has two green LEDs showing whether each input is OK or failed, plus a relay contact alarm for each input rated 30VDC, 1A max. Those features help support monitoring in redundant power supply systems.
What operating temperature range is listed for the DR-RDN20?
The listed working temperature range is -40 ~ +70°C, with load derating at higher ambient temperatures per the derating curve on the spec sheet. That wide range makes it suitable for demanding industrial environments where ambient temperatures can vary significantly.
Payment & Security
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Other DR-DRN20 Series Models
1 other model| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DRDN20-12 Redundancy Module Power Supply 20A - DIN Rail | 240W | 12V | 20A | IP20 | $31.33 | View |
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