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Mean Well DRDN20-12 Redundancy Module Power Supply 20A - DIN Rail
Overview
DRDN20-12 is the model of this series: rated current 0~20A per input Continuous, typical efficiency 98%.
The DRDN20 series is a 20A redundancy module that can be used with a power supply to improve overall system operation reliability. Product key features include:12V/24V/48V input voltage for selection, support N+1 and 1+1 redundancy systems,built-in two rails DC input contacts and single output. The MOSFET technology implemented can reduce heat loss and reduce the voltage difference between the input and output voltages, built-in 2 channels DC OK relay contacts for monitoring output status, ultra-wide operating temperature of -40 to +80℃ and narrow width (32mm).
Features
- Support 1+1 and N+1 redundancy system
- 2 channels input and 1 output
- Suitable for redundancy operation of 12V/24V/48V system
- Output current up to 20A
- Cooling by free air convection
- -40~+80℃ ultra-wide operating temperature ( >+60℃ derating)
- 32mm slim width
- Built-in 2 channels DC OK signal and alarm relay contact
- Installed on DIN Rail TS35/7.5 or 15
- 3 years warranty
Specifications
MODEL
- MODEL
- DRDN20-12
INPUT
- NUMBER OF INPUT
- 2 Channels
- DC NORMAL VOLTAGE
- 12Vdc
- DC VOLTAGE RANGE
- 9~14Vdc
- RATED CURRENT
- 0~20A per input Continuous
- VOLTAGE DROP (Vin-Vout) (max.)
- 0.25V
- PEAK CURRENT
- 0~30A per input 5Sec.
- EFFICIENCY (Typ.)
- 98%
- INPUT REVERSE CURRENT (max.)
- 1mA
- INPUT REVERSE VOLTAGE (max.)
- 40Vdc
OUTPUT
- RATED CURRENT
- 0~20A, Continuous
- PEAK CURRENT (max.)
- 30A, 5Sec.
- CAPACITANCE(Typ.)
- 320uF
- STANDBY POWER LOSSES(Typ.)
- 1.5W
PROTECTION
- OVERLOAD
- <30A,5Sec. No damage
- SHORT CIRCUIT
- <30A,5Sec. No damage
FUNCTION
- REDUNDANCY
- For 1+1 redundancy ,and support N+1 redundancy
- BOTH INPUTS VOLTAGE ALARM
- <8.5V or >14.7V (±5%)
- RELAY
- 30Vdc/1A resistive load
- LED STATUS DISPLAY
- Green LED OK
ENVIRONMENT
- COOLING
- Free air convection
- WORKING TEMP.Note.2
- -40 ~ +80℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 5 ~ 95% RH non-condensing
- STORAGE TEMP.
- -40 ~ +85℃
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 60℃ )
- VIBRATION
- Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
- OPERATING ALTITUDENote.3
- 5000 meters/OVC II
SAFETY & EMC
- SAFETY STANDARDS
- IEC62368-1, UL62368-1, EAC TP TC 004 approved
- WITHSTAND VOLTAGE
- IP/OP - Chassis : 0.5KVac ; IP/OP- Relay : 0.5KVac ; Relay - Chassis : 0.5KVac
- ISOLATION RESISTANCE
- IP/OP - Chassis, IP/OP- Relay, Relay - Chassis:>100M Ohms / 500Vdc / 25℃/ 70% RH
- EMC EMISSION
-
Parameter Standard Test Level Conducted BS EN/EN55032(CISPR32) Class B Radiated BS EN/EN55032(CISPR32) Class B - EMC IMMUNITY
-
BS EN/EN55035, BS EN/EN61000-6-2(BS EN/EN50082-2)
Parameter Standard Test Level ESD BS EN/EN61000-4-2 Level 4, 15KV air; Level 3, 8KV contact; criteria A Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-Chassis ;criteria A Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A
OTHERS
- MTBF
- 1836.0K hrs min. Telcordia SR-332 (Bellcore) ; 482.1K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 32*125.2*102mm (W*H*D)
- PACKING
- 0.35Kg;28psc/10.8Kg/1.23CUFT
Test conditions and notes4
- 1. All parameters NOT specially mentioned are measured at normal input (12V/24V/48V), rated load and 25℃ of ambient temperature.
- 2. Derating may be needed over high ambient temperature. Please check the derating curve for more details.
- 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).
- 4. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the 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 )
Technical drawings
Typical applications
- Industrial control system
- Semiconductor fabrication equipment
- Factory automation
- Electro-mechanical apparatus
Downloads
Datasheet1
Certificates6
Test reports1
FAQ
Can I use the DRDN20-12 in a 12V PLC or industrial automation control panel?
Yes, this model is built for 12V systems with a 9-14Vdc input range and is rated for 20A continuous. Its redundancy module design supports 1+1 and N+1 redundancy, which fits PLC and industrial automation panels that need power-path continuity on DIN rail.
Is the DRDN20-12 suitable for a building management control cabinet with redundant 12V power?
It can be used in a building management cabinet when the control equipment is based on 12V and the design calls for redundant power paths. The module supports 1+1 and N+1 redundancy, and the relay contacts allow power status monitoring for cabinet-level supervision.
Can this redundancy module work for 12V alarm, relay, or panel-control loads in an enclosure?
Yes, it is appropriate for enclosed 12V control loads where the system current stays within 20A continuous (30A peak for 5 seconds). The 125.2 x 102.0 x 32.0 mm housing gives it a slim DIN rail profile for space-conscious panel layouts.
Can I use the DRDN20-12 where I need power status monitoring in a machine control cabinet?
Yes, this unit includes relay contacts for monitoring power status, which is useful in machine control cabinets that need a fault signal from the redundant power path. It is intended for 12V systems up to 20A continuous.
What is the difference between the DRDN20-12, DRDN20-24, and DRDN20-48?
The DRDN20-12 is the 12V version with a 9-14Vdc input range. The DRDN20-24 is the 24V version with a 19-29Vdc input range, while the DRDN20-48 is the 48V version with a 36-60Vdc input range. All three are rated 20A continuous and share the same 125.2 x 102.0 x 32.0 mm dimensions, 0.35 kg weight, -40°C to +80°C operating temperature (with derating), and IEC62368-1, UL62368-1 and EAC TP TC 004 approvals.
Is the DRDN20-12 meant for open areas or for use inside a control enclosure?
The published specs show DIN rail mounting, industrial certifications, and an operating range of -40°C to +80°C, but they do not list an IP rating. That makes it a better fit for use inside a control cabinet or enclosure rather than in an exposed area.
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