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Mean Well DRDN40-24 Redundancy Module Power Supply 40A - DIN Rail
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DRDN40-24 is the model of this series: rated current 0~40A per input Continuous, typical efficiency 98%.
The DRDN40 series is a 40A 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 (55mm).
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 40A
- Cooling by free air convection
- -40~+80℃ ultra-wide operating temperature ( >+60℃ derating)
- 55mm slim width
- Built-in 2 channels DC OK signal and alarm relay contact
- 3 years warranty
Specifications
INPUT
- NUMBER OF INPUT
- 2 Channels
- DC NORMAL VOLTAGE
- 24Vdc
- DC VOLTAGE RANGE
- 19~29Vdc
- RATED CURRENT
- 0~40A per input Continuous
- VOLTAGE DROP (Vin-Vout) (max.)
- 0.3V
- PEAK CURRENT
- 0~60A per input 5Sec.
- EFFICIENCY (Typ.)
- 98%
- INPUT REVERSE CURRENT (max.)
- 1mA
- INPUT REVERSE VOLTAGE (max.)
- 40Vdc
OUTPUT
- RATED CURRENT
- 0~40A, Continuous
- PEAK CURRENT (max.)
- 60A, 5Sec.
- CAPACITANCE(Typ.)
- 320uF
- STANDBY POWER LOSSES(Typ.)
- 1.5W
PROTECTION
- OVERLOAD
- <60A,5Sec. No damage
- SHORT CIRCUIT
- <60A,5Sec. No damage
FUNCTION
- REDUNDANCY
- For 1+1 redundancy ,and support N+1 redundancy
- BOTH INPUTS VOLTAGE ALARM
- <18V or >31V (±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 (Note.4)
- 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 Voltage Flicker ----- ----- Harmonic Current ----- ----- - 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
- 1672.9K hrs min. Telcordia SR-332 (Bellcore) ; 499.5K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 55*125.2*100mm (W*H*D)
- PACKING
- 0.5Kg;20psc/11Kg/1.49CUFT
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
Certificates6
Test reports1
FAQ
Can I use the DRDN40-24 in a 24V PLC control panel that needs redundant power?
Yes. The DRDN40-24 is a 24V redundancy module rated for 40A continuous and supports both 1+1 and N+1 redundancy, which fits control panels designed around redundant 24V DC power architecture. Its DIN rail form factor also suits industrial control cabinets where monitored backup continuity is required.
Is the DRDN40-24 appropriate for industrial automation cabinets with 24V control loads?
It is suitable for industrial automation cabinets that use a 24V power bus and need redundancy at up to 40A. The module is designed for DIN rail use and includes relay contacts for monitoring power status, which is useful in supervised automation systems. Its 125.2 × 100.0 × 55.0 mm size also fits panel-based installations better than open mounting approaches.
Can this redundancy module be used in building management or facility control enclosures?
Yes, if the building management or facility control enclosure is based on 24V DC distribution and requires redundant supply monitoring. The DRDN40-24 supports 1+1 and N+1 redundancy and provides relay contacts for power status, which aligns with monitored control infrastructure. It is built for DIN rail mounting, which is common in enclosure-based control systems.
Is the DRDN40-24 a good fit for a DIN rail control cabinet with high current 24V distribution?
Yes. This model handles up to 40A continuous on a 24V bus (19-29Vdc input range), so it fits higher-current 24V cabinet designs that need redundancy rather than a single non-redundant feed. Its DIN rail format keeps the module aligned with cabinet-based power distribution layouts.
How does the DRDN40-24 compare with the other DRDN40 redundancy modules?
The DRDN40-12 is rated for 12V systems at 40A (9-14Vdc input), the DRDN40-24 for 24V systems at 40A (19-29Vdc), and the DRDN40-48 for 48V systems at 40A (36-60Vdc). All are part of the same DRDN40 series and keep the same 40A current class, while the input voltage range changes by model. The right choice depends on the DC bus voltage used in the system.
Is the DRDN40-24 intended for exposed or outdoor environments?
It is better suited to protected control cabinets or electrical enclosures rather than exposed locations. The listed operating range is -40°C to +80°C, which supports demanding indoor industrial environments, but the product data here is oriented around DIN rail cabinet use. For enclosure-based installations, its 0.5 kg weight and compact body help keep panel layouts manageable.
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