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Mean Well DDR-480D-12 DC-DC Converter - 400.8W - 67.2~154V in 12V out
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Mean Well DDR-480D-12 DC-DC Converter - 400.8W - 67.2~154V in 12V out
The DDR-480D 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 67.2~154Vdc (nominal 110Vdc), 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: 67.2~154Vdc (nominal 110Vdc)
- ✓ 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
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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 Voltage67.2V~154V
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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
::specification::
Frequently Asked Questions
Can I use the DDR-480D-12 to convert a 110V DC bus down to 12V for embedded controllers?
Yes. The DDR-480D-12 accepts 67.2-154V DC input, which covers standard 110V and 125V DC distribution systems. It outputs 12V at up to 33.4A (400.8W), providing ample current for embedded controllers, single-board computers, and other 12V loads in industrial or railway applications.
Is the DDR-480D-12 suitable for powering 12V LED lighting systems from a high-voltage DC source?
The DDR-480D-12 can convert a 67.2-154V DC input down to 12V at 33.4A, delivering 400.8W total. This is enough to drive substantial 12V LED lighting arrays in industrial or commercial settings where the primary power distribution uses a higher DC voltage bus.
Can the DDR-480D-12 be used in railway or transit applications with a 72V or 110V DC supply?
The DDR-480D-12 accepts input from 67.2V to 154V DC, covering both 72V and 110V nominal DC systems used in rail and transit infrastructure. Its DIN rail form factor, fanless operation, -40 to +80 degrees C operating range, and 4KVdc isolation make it suitable for demanding transportation environments.
How does the DDR-480D-12 handle high ambient temperatures in enclosed control cabinets?
The DDR-480D-12 operates from -40 to +80 degrees Celsius and uses a fanless convection-cooled design. In enclosed cabinets approaching the upper temperature limit, adequate ventilation or cabinet cooling should be provided to prevent derating. The unit does not have an ingress protection rating, so it relies on the enclosure for environmental sealing.
What are the DDR-480D series output voltage options for the 67.2-154V input range?
The DDR-480D series with 67.2-154V DC input is available in three output variants: the DDR-480D-12 at 400.8W/12V/33.4A, the DDR-480D-24 at 480W/24V/20A, and the DDR-480D-48 at 480W/48V/10A. For lower input voltage ranges, the B series (16.8-33.6V) and C series (33.6-67.2V) offer the same output options.
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Other DDR-480D Models
2 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DDR-480D-24 DC-DC Converter - 480W - 67.2~154V in 24V out | 480W | 24V | 20A | Indoor | $184.66 | View |
| Mean Well DDR-480D-48 DC-DC Converter - 480W - 67.2~154V in 48V out | 480W | 48V | 10A | Indoor | $184.66 | View |
