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Mean Well

Mean Well DDR-480B-24 DC-DC Converter - 480W - 16.8~33.6V in 24V out

2:1 or 4:1 wide input range, fanless design, 4KVdc I/O isolation, ultra slim dimensions
SKU:
DDR-480B-24
Model
Please for Pricing
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Description

The DDR-480B 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 16.8~33.6Vdc (nominal 24Vdc), 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: 16.8~33.6Vdc (nominal 24Vdc)
  • ✓ 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
  • Brand
    Mean Well
  • Series
    DDR Series
  • Power Rating
    480 Watt
  • Output Voltage
    24 Volt
  • Rated Current
    20 Ampere
  • Input Voltage
    16.8V~33.6V
  • Standards Met
    EMC
  • Operation Mode
    Constant Voltage
  • Operating Temperature
    -40°C~80°C
  • Warranty
    3 Year
  • Length
    12.85 cm
  • Width
    12.52 cm
  • Height
    8.55 cm
  • Weight
    1.38 kg

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Frequently Asked Questions

Can I use the DDR-480B-24 to power 24V industrial automation equipment from a 24V battery bus?

Yes. The DDR-480B-24 accepts 16.8-33.6V DC input and outputs isolated 24V at up to 20A (480W). This makes it ideal for converting an unregulated 24V battery bus into a clean, isolated 24V rail for PLCs, VFDs, HMI panels, and other automation devices that need stable voltage with noise isolation.

Is the DDR-480B-24 suitable for high-current 24V LED lighting systems powered from a 24V DC distribution bus?

Yes. At 480W and 20A, it can drive large arrays of 24V LED panels, strip lighting, or signage. The 4KVdc I/O isolation separates the lighting load from the main bus, and the DIN rail mount fits standard electrical panels. Ensure the total connected LED load does not exceed 480W.

Can the DDR-480B-24 provide isolated 24V power for marine or vehicle electrical systems running on a nominal 24V bus?

Yes. Marine and heavy-vehicle 24V battery systems typically range from about 20V to 30V, which falls within the 16.8-33.6V input window. The 4KVdc isolation protects downstream equipment from ground faults and transients on the vehicle bus. The -40°C to +80°C rating and fanless design suit engine rooms and exposed installations.

Does the DDR-480B-24 require active cooling or ventilation in an enclosed panel?

The DDR-480B-24 uses a fanless convection-cooled design, so no forced air is required under normal conditions. However, at 480W it generates meaningful heat. In sealed enclosures, verify that ambient temperature stays below +80°C and provide adequate spacing around the unit for airflow. Its dimensions are 128.5 x 125.2 x 85.5 mm, so plan enclosure sizing accordingly.

How does the DDR-480B-24 compare to lower-wattage 24V DDR models for sizing my system?

The DDR series with B-suffix (16.8-33.6V input) offers 24V output at several power tiers: DDR-120B-24 at 120W / 5A, DDR-240B-24 at 240W / 10A, and DDR-480B-24 at 480W / 20A. If your load is well under 120W, the smaller models save space and cost. The DDR-480B-24 is the right choice when your 24V load approaches or exceeds 240W.

Other DDR-480B Models

2 other models
ModelPowerVoltageCurrentIP Rating
Mean Well DDR-480B-48 DC-DC Converter - 480W - 16.8~33.6V in 48V out 480W 48V 10A Indoor View
Mean Well DDR-480B-12 DC-DC Converter - 400.8W - 16.8~33.6V in 12V out 400.8W 12V 33.4A Indoor View
View all 53 DDR Series models
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Mean Well DDR-480B-24 DC-DC Converter - 480W - 16.8~33.6V in 24V out
Mean Well

Mean Well DDR-480B-24 DC-DC Converter - 480W - 16.8~33.6V in 24V out

Please for Pricing

The DDR-480B 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 16.8~33.6Vdc (nominal 24Vdc), 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

Model

  • 100W - 24V out - 9~18V in
  • 120W - 24V out - 16.8~33.6V in
  • 120W - 24V out - 33.6~67.2V in
  • 120W - 24V out - 67.2~154V in
  • 15W - 24V out - 9~36V in
  • 15W - 24V out - 18~75V in
  • 240W - 24V out - 16.8~33.6V in
  • 240W - 24V out - 33.6~67.2V in
  • 240W - 24V out - 67.2~154V in
  • 30W - 24V out - 9~36V in
  • 30W - 24V out - 18~75V in
  • 480W - 24V out - 16.8~33.6V in
  • 480W - 24V out - 33.6~67.2V in
  • 480W - 24V out - 67.2~154V in
  • 60W - 24V out - 9~36V in
  • 60W - 24V out - 18~75V in
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