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Mean Well

Mean Well DDR-30L-12 DC-DC Converter - 30W - 18~75V in 12V out

2:1 or 4:1 wide input range, fanless design, 4KVdc I/O isolation, ultra slim dimensions
SKU:
DDR-30L-12
Model
Please for Pricing
|

Description

The DDR-30L is a 30W DIN Rail type DC-DC converter with a 35mm (2SU) profile, suited for systems powered from 24V or 48V DC buses. A 4:1 wide input voltage range of 18~75Vdc covers nominal 24V and 48V supplies, and reinforced 4KVdc I/O isolation ensures clean, noise-resistant power conversion. Cooled by free air convection with no minimum load requirement, it operates across a -40~+85°C working range.

Key Features

  • ✓ Compact 35mm (2SU) width — DIN rail TS-35/7.5 or 15 compatible
  • ✓ 4:1 wide input voltage range: 18~75Vdc
  • ✓ DC output voltage adjustable ±10%
  • ✓ 4KVdc reinforced I/O isolation
  • ✓ Cooling by free air convection — no minimum load required
  • ✓ Wide operating temperature: -40°C ~ +85°C
  • ✓ Protections: Short circuit / Overload / Over voltage / Reverse polarity / Under voltage lockout
  • ✓ Safety approvals: UL 62368-1, IEC 62368-1, AS/NZS 62368.1
  • ✓ 3 years warranty

Specifications
  • Brand
    Mean Well
  • Series
    DDR Series
  • Power Rating
    30 Watt
  • Output Voltage
    12 Volt
  • Rated Current
    2.5 Ampere
  • Input Voltage
    18V~75V
  • Standards Met
    CE,EMC,UL
  • Operation Mode
    Constant Voltage
  • Operating Temperature
    -40°C~85°C
  • Warranty
    2 Year
  • Length
    9 cm
  • Width
    5.45 cm
  • Height
    3.5 cm
  • Weight
    0.12 kg

File Downloads

::specification::

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Frequently Asked Questions

Can I use the DDR-30L-12 to power 12V sensors and relays in a DIN rail automation panel?

Yes. The DDR-30L-12 outputs 12V at up to 2.5A (30W), which is sufficient for small sensor arrays, relay modules, and indicator lights commonly found in industrial control panels. Its DIN rail mount and ultra slim 35mm width make it easy to fit into standard enclosures alongside PLCs and terminal blocks.

Is the DDR-30L-12 suitable for converting a 48V DC bus to 12V for embedded computing boards?

Yes. With its 18-75V DC input range, it accepts 48V nominal bus voltages commonly found in telecom and data center environments. It provides a stable 12V output at up to 2.5A with 4KVdc I/O isolation, protecting sensitive embedded boards from ground loops and transients on the main bus.

Can the DDR-30L-12 power 12V LED indicator panels in a railway or transportation control cabinet?

Yes. The wide 18-75V DC input range accommodates the variable battery voltages found in railway and transportation systems (typically 24V, 48V, or 72V nominal). Its -40°C to +85°C operating range and fanless design make it reliable in vibration-prone, maintenance-restricted environments.

Will the DDR-30L-12 operate reliably in an unheated outdoor electrical enclosure?

The DDR-30L-12 is rated for -40°C to +85°C, so it handles extreme cold and heat inside sealed enclosures without derating concerns at typical ambient temperatures. Its fanless convection-cooled design means no moving parts to fail from dust or moisture. However, it does not carry an IP rating, so it should be mounted inside a weatherproof enclosure rather than exposed directly to rain.

What is the difference between the DDR-30L and DDR-30G series?

Both the DDR-30L and DDR-30G deliver 30W and share the same output voltage options (5V, 12V, 15V, 24V). The key difference is input voltage range: the DDR-30L accepts 18-75V DC (4:1 wide input), while the DDR-30G accepts 9-36V DC (4:1 wide input at a lower range). Choose the L series for 48V or 72V bus systems, and the G series for 12V or 24V bus systems.

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Mean Well DDR-30L-12 DC-DC Converter - 30W - 18~75V in 12V out
Mean Well

Mean Well DDR-30L-12 DC-DC Converter - 30W - 18~75V in 12V out

Please for Pricing

The DDR-30L is a 30W DIN Rail type DC-DC converter with a 35mm (2SU) profile, suited for systems powered from 24V or 48V DC buses. A 4:1 wide input voltage range of 18~75Vdc covers nominal 24V and 48V supplies, and reinforced 4KVdc I/O isolation ensures clean, noise-resistant power conversion. Cooled by free air convection with no minimum load requirement, it operates across a -40~+85°C working range.

Key Features

Model

  • 100W - 12V out - 9~18V in
  • 120W - 12V out - 16.8~33.6V in
  • 120W - 12V out - 33.6~67.2V in
  • 120W - 12V out - 67.2~154V in
  • 15W - 12V out - 9~36V in
  • 15W - 12V out - 18~75V in
  • 30W - 12V out - 9~36V in
  • 30W - 12V out - 18~75V in
  • 400.8W - 12V out - 16.8~33.6V in
  • 400.8W - 12V out - 33.6~67.2V in
  • 400.8W - 12V out - 67.2~154V in
  • 60W - 12V out - 9~36V in
  • 60W - 12V out - 18~75V in
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