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Mean Well ERDN20-12 Redundancy Module Power Supply 20A
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Mean Well ERDN20-12 Redundancy Module Power Supply 20A
The ERDN20 is a Mean Well power converter (operating temperature: -40~+85℃).
Key Features
- ✓ Wide operating temperature: -40~+85℃
- ✓ Protections: Short circuit / Overload
- ✓ DC OK relay contact output
- ✓ Safety approvals: WITHSTAND VOLTAGE ISOLATION RESISTANCE IEC62368-1, UL62368-1, EAC TP TC 004
- ✓ 3 years warranty
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BrandMean Well
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SeriesERDN Series
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Power Rating240 Watt
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Output Voltage12 Volt
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Rated Current20 Ampere
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Input Voltage9V~14V
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No of Output1
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Dimming ControlNone
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Standards MetCB,CE,EAC,UL
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Operation ModeConstant Voltage
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Operating Temperature-40°C~80°C
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Warranty3 Year
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Length3.9 in
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Width3.23 in
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Height1.42 in
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Weight0.46 lb
::specification::
Frequently Asked Questions
What does the Mean Well ERDN20-12 do?
The ERDN20-12 is a redundancy module designed for DC power systems rather than a standalone AC-DC power supply. It supports 1+1 and N+1 redundant setups by taking two DC inputs and providing one DC output, helping maintain output if one supply path fails.
Is the ERDN20-12 specifically for 12V systems only?
No. Although this model is identified as ERDN20-12, the published specifications state it is suitable for redundancy operation in 5V, 12V, 24V, and 48V systems. Its DC input voltage range is 5-48V, with voltage ranges listed separately for each system class.
What current capacity does the ERDN20-12 support?
This redundancy module is rated for output current up to 20A. It also allows peak current of 0-30A per input for 5 seconds, and the overload and short circuit protection notes specify no damage below 30A for 5 seconds.
When is the ERDN20-12 a better choice than using a single DC power supply?
The ERDN20-12 is intended for systems that need higher power-path reliability than a single supply can provide. It is a practical choice for industrial control and other DC applications where a redundant 1+1 or N+1 architecture is preferred to reduce downtime risk.
Can the ERDN20-12 be used in demanding industrial environments?
It is specified for operation from -40 to +80 degrees C and uses free air convection cooling, which suits a wide range of industrial environments. The module also lists EMC compliance to EN55032 Class B and EN61000-4 immunity standards, along with IEC62368-1 and UL60950-1 safety standards.
Does the ERDN20-12 provide status monitoring for redundancy systems?
Yes. It includes built-in 2-channel DC OK signaling and an alarm relay contact for status indication. The general specification also lists the DC OK signal as relay contact.
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Other ERDN20 Models
3 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well ERDN20-5 Redundancy Module Power Supply 20A | 100W | 5V | 20A | Indoor | $27.27 | View |
| Mean Well ERDN20-48 Redundancy Module Power Supply 20A | 960W | 48V | 20A | Indoor | $27.27 | View |
| Mean Well ERDN20-24 Redundancy Module Power Supply 20A | 480W | 24V | 20A | Indoor | $27.27 | View |
