Power inverter/adapter Mean Well SD-1000L-48, 1000 W, 48 V output, 19–72 V input

Mean Well SD-1000L-48 is a compact DC-DC converter that delivers up to 1000 W of regulated 48 VDC output from a wide 19–72 VDC input range. Housed in a metal enclosure measuring 127 × 295 × 41 mm with forced-air cooling, the unit provides a constant 48 V output at up to 21 A and includes a 12 VDC standby (VSB) supply. With 2000 VDC input-to-output isolation and RoHS compliance, this converter is designed for reliable operation in telecom, industrial power systems, battery-fed installations and off-grid equipment that require stable 48 V power.

Advantages

The SD-1000L-48 offers wide input range compatibility, allowing operation from varied DC sources such as battery banks, rectified supplies or vehicle systems. Its metal enclosure and forced-air cooling enable continuous high-power delivery while maintaining thermal stability. High input-to-output isolation increases safety and reduces interference risks in sensitive equipment. The integrated 12 V standby output supports system supervision or auxiliary electronics without the need for a separate supply.

Suitable for

• Telecommunications equipment and base stations
• Industrial control cabinets and automation systems
• Battery-based power systems and UPS installations
• Off-grid and renewable energy systems
• Vehicle and mobile power applications with compatible DC ranges

Key specifications

• Output voltage: 48 VDC, regulated
• Maximum output current: 21 A (1000 W)
• Input voltage range: 19–72 VDC
• Standby output: 12 VDC (VSB)
• Input-to-output isolation voltage: 2000 VDC
• Cooling: forced-air (fan-cooled)
• Enclosure material and dimensions: metal housing, 127 × 295 × 41 mm
• Compliance: RoHS

How to use

Install the converter in a well-ventilated enclosure or rack space that allows airflow for the built-in fan. Connect the DC input within the specified 19–72 V range, observing correct polarity and appropriate cable sizing to handle input currents. Connect the 48 VDC output to the load, ensuring the combined load does not exceed 21 A. Use the 12 V VSB output for supervisory circuits or ancillary devices as needed. Follow standard safety practices: power down before making connections, secure mounting to prevent vibration, and observe grounding requirements.

Recommendations

For reliable long-term operation, maintain adequate airflow around the converter and avoid installation in locations with excessive dust, moisture, or high ambient temperature. Use correctly rated fuses or circuit breakers on input and output lines, and verify battery or supply voltages fall within the 19–72 VDC range during transient conditions. Consider additional filtering or surge protection for installations exposed to electrical noise or lightning-prone environments.