Power adapter MEAN WELL DDR-15L-3.3 15W Input 18-75V

The MEAN WELL DDR-15L-3.3 is an ultra-slim industrial DC-DC DIN-rail converter that accepts a wide input range of 18–75 VDC and provides a single regulated 3.3 VDC output at up to 4.5 A (15 W). Compact and lightweight, the unit measures 54.5 mm depth by 90 mm height and weighs 68 g. It is RoHS compliant and designed for space-constrained installations on standard DIN rails.

Advantages

The converter delivers a stable 3.3 V output with up to 4.5 A current capability while occupying minimal panel space thanks to its ultra-slim design. Wide input voltage range (18–75 VDC) allows use with various battery and intermediate bus voltages. The device is RoHS compliant and intended for industrial DIN-rail mounting, which simplifies installation and system integration.

Suitable for (tasks / use cases)

• Industrial control panels and automation equipment
• Telecommunications and intermediate bus conversion
• Battery-powered systems and vehicles with varying input voltage
• Space-limited DIN-rail installations

Key specifications

• Manufacturer: MEAN WELL
• Model (MPN): DDR-15L-3.3
• Input voltage: 18–75 VDC
• Output: 3.3 VDC, 4.5 A (15 W)
• Output type: Single regulated DC
• Mounting: DIN-rail
• Dimensions: 54.5 mm (depth) × 90 mm (height)
• Weight: 68 g
• Compliance: RoHS
• EAN: 4021087050869

How to use

Mount the MEAN WELL DDR-15L-3.3 on a standard DIN rail in a dry, ventilated enclosure. Connect the DC input within the specified 18–75 VDC range, observing correct polarity. Connect the load to the 3.3 VDC output, ensuring the total current draw does not exceed 4.5 A. Provide appropriate fusing or overcurrent protection on the input side according to system requirements. Allow space for airflow and follow local wiring regulations when integrating into control cabinets.

Recommendations

Use within the specified input voltage range and install in a temperature-controlled environment. Verify that cumulative load currents and heat dissipation are within device limits; add external cooling or derating if ambient temperature or enclosure conditions require it.