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Mean Well DDR-480C-12 DC-DC Converter - 400.8W - 33.6~67.2V in 12V out
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Mean Well DDR-480C-12 DC-DC Converter - 400.8W - 33.6~67.2V in 12V out
Description
Description
The DDR-480C is a 480W DIN Rail type DC-DC converter designed for rolling stock and railway applications requiring compliance with EN50155 standards. With an input range of 33.6~67.2Vdc (nominal 48Vdc), it converts from standard on-board DC bus supplies to isolated 12V, 24V, or 48V outputs. Built to withstand shock and vibration per IEC61373, it operates reliably from -40~+80°C and supports current sharing for higher-power parallel configurations.
Key Features
- ✓ 85.5mm wide — DIN rail TS-35 compatible
- ✓ Input voltage range: 33.6~67.2Vdc (nominal 48Vdc)
- ✓ DC output voltage adjustable ±10%
- ✓ 4KVdc reinforced I/O isolation
- ✓ Wide operating temperature: -40°C ~ +80°C
- ✓ Protections: Short circuit / Overload / Over voltage / Reverse polarity / Under voltage lockout
- ✓ DC OK relay contact output
- ✓ Remote ON/OFF control
- ✓ Current sharing up to 1920W (parallel 3+1 units)
- ✓ Safety approvals: UL 62368-1, IEC 62368-1, AS/NZS 62368.1, EAC TP TC 004
- ✓ Railway standards: EN50155, IEC60571, IEC61373 (shock & vibration)
- ✓ 3 years warranty
Specifications
Specifications
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BrandMean Well
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SeriesDDR Series
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Power Rating400.8 Watt
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Output Voltage12 Volt
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Rated Current33.4 Ampere
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Input Voltage33.6V~67.2V
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No of Output1
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Dimming ControlNone
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Standards MetEMC
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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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Length5.06 in
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Width4.93 in
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Height3.37 in
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Weight3.03 lb
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Frequently Asked Questions
Can I use the DDR-480C-12 to step down a 48V data center bus to 12V for high-current server components?
Yes. The DDR-480C-12 accepts 33.6-67.2V DC input, perfectly matching a standard 48V data center bus (typical 42-58V). It delivers 12V at up to 33.4A (400.8W), providing enough current for storage arrays, fan trays, or other 12V rack subsystems that draw significant power.
Is the DDR-480C-12 suitable for converting a 48V telecom DC plant to 12V for legacy radio or modem equipment?
Yes. Telecom central offices and remote sites commonly distribute 48V DC. The DDR-480C-12 converts that to an isolated 12V rail at up to 33.4A, which can power legacy 12V radio transceivers, modems, or alarm panels. The 4KVdc I/O isolation protects sensitive equipment from the main plant bus.
Can the DDR-480C-12 supply 12V power for electric vehicle charging station control electronics from a 48V DC bus?
Yes. EV charging stations often have a 48V DC internal bus for power distribution. The DDR-480C-12 converts that to 12V at up to 33.4A for control boards, displays, communication modules, and contactors. Its DIN rail mount and -40°C to +80°C rating suit outdoor charging station enclosures.
Is the DDR-480C-12 safe for use in environments with wide daily temperature swings?
Yes. It is rated for -40°C to +80°C, covering desert daytime heat as well as sub-zero overnight temperatures. The fanless design eliminates concerns about condensation-related fan failure during rapid temperature transitions. Mount it inside a sealed enclosure to prevent direct moisture contact.
How does the DDR-480C-12 compare to the DDR-480B-12 and DDR-480D-12?
All three output 12V at 33.4A (400.8W) with the same physical dimensions and fanless design. They differ only in input voltage range: DDR-480B-12 accepts 16.8-33.6V (24V bus), DDR-480C-12 accepts 33.6-67.2V (48V bus), and DDR-480D-12 accepts 67.2-154V (high-voltage DC bus). Choose based on your source DC voltage.
Other DDR-480C Models
2 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DDR-480C-48 DC-DC Converter - 480W - 33.6~67.2V in 48V out | 480W | 48V | 10A | Indoor | $184.66 | View |
| Mean Well DDR-480C-24 DC-DC Converter - 480W - 33.6~67.2V in 24V out | 480W | 24V | 20A | Indoor | $184.66 | View |
