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Mean Well DDR-15L-12 DC-DC Converter - 15W - 18~75V in 12V out
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Mean Well DDR-15L-12 DC-DC Converter - 15W - 18~75V in 12V out
The DDR-15L is a compact 15W DIN Rail type DC-DC converter designed for installations powered from 24V or 48V battery and DC bus systems. Its ultra slim 17.5mm (1SU) profile fits standard TS-35 DIN rails, and a 4:1 wide input voltage range of 18~75Vdc covers nominal 24V and 48V DC supplies. With no minimum load requirement, free air convection cooling, and reinforced 4KVdc I/O isolation, the DDR-15L provides reliable isolated power across a -40~+85°C operating range.
Key Features
- ✓ Ultra slim 17.5mm (1SU) 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: IEC 62368-1, AS/NZS 62368.1
- ✓ 3 years warranty
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BrandMean Well
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SeriesDDR Series
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Power Rating15 Watt
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Output Voltage12 Volt
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Rated Current1.25 Ampere
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Input Voltage18V~75V
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No of Output1
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Dimming ControlNone
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Standards MetCE,EAC,EMC
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Operation ModeConstant Voltage
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Operating Temperature-40°C~85°C
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Warranty2 Year
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Length3.54 in
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Width2.15 in
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Height0.69 in
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Weight0.15 lb
::specification::
Frequently Asked Questions
Can I use the DDR-15L-12 to convert a 48V telecom DC bus to 12V for peripheral equipment?
Yes. The DDR-15L-12 accepts 18-75V DC input, which covers the standard 48V nominal telecom bus (typically 36-72V including tolerances). It outputs 12V at up to 1.25A (15W), suitable for powering fans, relays, small routers, or indicator panels in telecom racks.
Is the DDR-15L-12 appropriate for powering 12V sensors in a 48V solar battery monitoring system?
Yes. With its 18-75V input range, the DDR-15L-12 can accept power from a 48V solar battery bank and convert it to a stable 12V at up to 1.25A. This is sufficient for temperature sensors, current monitors, or small data acquisition boards in off-grid solar installations.
Can the DDR-15L-12 power a small 12V DIN rail relay module in an industrial control cabinet?
Yes. The DDR-15L-12 mounts directly on standard DIN rail and provides 12V/1.25A output. It is a good fit for powering small relay modules, indicator lights, or auxiliary logic boards inside control panels where the main DC bus runs at 24V, 48V, or similar voltages within the 18-75V input range.
Does the DDR-15L-12 require forced air cooling?
No. The DDR-15L-12 features a fanless convection-cooled design and operates reliably from -40°C to +85°C. It does not require any external fan or active cooling, making it suitable for sealed enclosures or noise-sensitive environments where fan noise is unacceptable.
What is the difference between the DDR-15G and DDR-15L sub-series?
The DDR-15G models accept a 9-36V DC input range, while the DDR-15L models accept a wider 18-75V DC input range. Both sub-series offer the same output voltage options (3.3V, 5V, 12V, 15V, 24V) at 15W and share the same ultra-slim 90.0 x 54.5 x 17.5 mm housing with 4KVdc I/O isolation.
Can I use the DDR-15L-12 to supply 12V to a security camera inside a DIN rail junction box fed from a 48V PoE midspan?
The DDR-15L-12 can convert a 48V DC feed to 12V at 1.25A for a small security camera or access control device. Its compact 17.5 mm width and DIN rail mounting make it easy to fit inside junction boxes or small enclosures alongside other equipment.
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Other DDR-15L Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DDR-15L-5 DC-DC Converter - 15W - 18~75V in 5V out | 15W | 5V | 3A | Indoor | $22.36 | View |
| Mean Well DDR-15L-3.3 DC-DC Converter - 11.6W - 18~75V in 3.3V out | 15W | 3.3V | 4.5A | Indoor | $19.67 | View |
| Mean Well DDR-15L-24 DC-DC Converter - 15W - 18~75V in 24V out | 15W | 24V | 0.63A | Indoor | $22.36 | View |
| Mean Well DDR-15L-15 DC-DC Converter - 15W - 18~75V in 15V out | 15W | 15V | 1A | Indoor | $19.67 | View |
