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Mean Well DDR-240D-48 DC-DC Converter - 240W - 67.2~154V in 48V out
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Mean Well DDR-240D-48 DC-DC Converter - 240W - 67.2~154V in 48V out
Description
Description
Features
| Width only 32mm |
| Compliance with EN50155 and EN45545-2 railway standard |
| DC output adjustable ( 10%) |
| 2:1 wide input range |
| 150% peak load capability |
| Protections: Short circuit / Overload / Over voltage /Input reverse polarity / Input under voltage protection |
| 4KVdc I/O isolation(Reinforced isolation) |
| Can be installed on DIN rail TS-35/7.5 or 15 |
| -40~+70°C wide working temperature |
| Cooling by free air convection |
| 3 years warranty |
General Specification
| Over current protection | Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135% rated output power with auto-recovery |
| Over-voltage protection |
12V:13.8~16.2V ; 15V:17.25~20.25V ; 24V:28.8~32.4V; Protection mode: Shut down o/p voltage, re-power on to recover |
| REVERSE POLARITY | By internal MOSFET, no damage recovers automatically after the fault condition removed |
| Withstand voltage | I/P-O/P:4KVDC I/P-FG:2.5KVDC O/P-FG:2.5KVDC |
| Working temperature | -40~+70°C (Refer to "Derating Curve"") |
| Safety standards | IEC 62368-1 (LVD), EAC TP TC 004 approved, Design refer to UL508 |
| EMC standards | With external components Compliance to EN55032 Class B;EN61000-3-,3，EN61000-4-2,3,4,5,6,8 |
| Dimension (LxWxH)(mm) | 32 x 125.2 x 102 mm |
Specifications
Specifications
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BrandMean Well
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SeriesDDR Series
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Power Rating240 Watt
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Output Voltage48 Volt
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Rated Current5 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 MetCE,EMC,UL
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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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Length4.93 in
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Width4.47 in
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Height1.57 in
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Weight1.68 lb
File Downloads
File Downloads
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Payment & Security
Payment methods
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Frequently Asked Questions
Can I use the DDR-240D-48 to convert a 110V DC station battery to 48V for telecom equipment?
Yes. The DDR-240D-48 accepts 67.2-154V DC input and outputs a regulated 48V at 5A (240W). A 110V DC station battery falls squarely within its input range, making it suitable for powering 48V telecom racks, PoE switches, or communication gear from a utility-grade DC battery bank.
Is the DDR-240D-48 suitable for converting high-voltage DC from a solar array into 48V for a battery storage system?
Yes, as long as the solar source voltage stays within 67.2-154V DC. The DDR-240D-48 delivers a regulated 48V at up to 5A, which can feed a 48V battery management system or charge controller in hybrid or off-grid solar installations without requiring an AC conversion stage.
Can I use the DDR-240D-48 in a railway or traction power application?
Yes. Many railway auxiliary DC buses operate in the 72-110V range, which is within the DDR-240D-48's 67.2-154V input window. Its fanless design, -40°C to +85°C operating range, and 4KVdc I/O isolation make it suitable for onboard rolling stock cabinets or trackside signal enclosures.
Will the DDR-240D-48 function in an unventilated enclosure exposed to extreme cold?
Yes. The DDR-240D-48 is rated from -40°C to +85°C and relies entirely on convection cooling with no fan. It will start and operate at temperatures as low as -40°C, which covers outdoor utility cabinets, Arctic climate installations, and cold-room applications without requiring supplemental heating.
Can the DDR-240D-48 power 48V DC loads from a 125V DC UPS battery system?
Yes. A 125V DC battery bank falls within the 67.2-154V input range. The DDR-240D-48 provides a stable 48V output at up to 5A (240W), suitable for network switches, security systems, or emergency communication equipment that must stay online during mains failures.
What are the differences between the DDR-240B-48, DDR-240C-48, and DDR-240D-48?
All three output 240W at 48V/5A and share the same DIN rail housing. The DDR-240B-48 accepts 16.8-33.6V DC input, the DDR-240C-48 accepts 33.6-67.2V DC input, and the DDR-240D-48 accepts 67.2-154V DC input. The letter suffix (B, C, D) indicates the input voltage tier, so select the variant that matches your source DC bus voltage.
Other DDR-240D Models
1 other model| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DDR-240D-24 DC-DC Converter - 240W - 67.2~154V in 24V out | 240W | 24V | 10A | Indoor | $92.37 | View |
