Power adapter/inverter Mean Well RSD-30L-5, 30 W, input 18–72 V, output 5 V, RoHS, 60×113×25 mm

Mean Well RSD-30L-5 is a compact DC-DC converter that accepts wide-range input voltages from 18 V to 72 V and provides a regulated 5 V DC output at up to 6 A. Housed in an enclosed metal case sized 60 × 113 × 25 mm, this 30 W module is designed for applications that require a stable low-voltage rail from higher DC sources. The converter meets railway standard EN50155, offers 4000 Vdc isolation between input and output, and is RoHS compliant, making it suitable for demanding embedded and transportation-grade power systems.

Advantages

The device delivers a stable 5 V output with up to 6 A load capability while operating from a broad 18–72 V input range, reducing the need for multiple supply variants. Robust I/O isolation (4000 Vdc) improves safety and reduces interference risk between high-voltage rails and sensitive electronics. Compliance with EN50155 and RoHS makes the unit appropriate for railway and other transport environments where regulatory and environmental constraints apply. The enclosed metal housing aids thermal dissipation and mechanical protection in industrial settings.

Suitable for

• Embedded systems and single-board computers requiring a reliable 5 V supply
• Industrial control panels and automation equipment
• Mobile and vehicular power systems, including rail and mass transit electronics
• Battery- or solar-fed systems with varying DC input voltages

Key specifications

• Power output: 30 W
• Input voltage range: 18–72 V DC
• Output voltage: regulated 5 V DC
• Maximum output current: 6 A
• Isolation voltage (input-output): 4000 V DC
• Conformance: railway standard EN50155
• RoHS compliance
• Enclosed metal case dimensions: 60 × 113 × 25 mm

How to use

Connect the converter input to an appropriate DC source within the specified 18–72 V range, observing correct polarity and using suitable wiring and fusing for the expected current. Mount the enclosed unit to a flat, thermally conductive surface or chassis to aid heat dissipation, ensuring adequate ventilation and clearance from heat-sensitive components. Connect the 5 V output to the load, verifying that the combined current draw does not exceed 6 A. Follow standard safety procedures during installation, and verify output voltage under load before connecting sensitive circuits.

Recommendations

Use recommended input protection such as slow-blow fuses or circuit breakers sized for the input current, and add upstream transient suppression if the device is installed in electrically noisy or automotive environments. For optimal long-term reliability, keep the ambient temperature within the manufacturer's specified range and allow for derating at elevated temperatures. When used in railway applications, follow relevant installation standards to maintain EN50155 compliance.