MEAN WELL RSDH-300-24 DC/DC Converter 300W 250-1500V to 24V 12.5A 4kV Isolation

Industrial and railway applications often face wide and high DC input voltages that standard converters cannot handle. The MEAN WELL RSDH-300-24 solves this by accepting 250 to 1500 VDC input and delivering a stable 24 VDC output at up to 300 W, with 4000 VDC isolation for safety and noise immunity.

Who is it for

Engineers and system integrators working on railway rolling stock, photovoltaic systems, high-voltage battery energy storage, or industrial automation where a reliable, fanless DC/DC converter is required.

Main features

• Wide 250–1500 VDC input range covers common high-voltage DC buses.
• 300 W output power with 24 VDC and 12.5 A continuous current.
• 4000 VDC input-to-output isolation protects sensitive electronics.
• Fanless free-air convection cooling for silent, maintenance-free operation.
• Remote ON/OFF and DC OK signal for system monitoring and control.
• Comprehensive protections: short circuit, overload, over voltage, input reverse polarity, and input under voltage.
• Wide operating temperature from -40°C to +80°C.
• Chassis mount with screw terminals for secure installation.

Specifications

• Power output: 300 W
• Input voltage range: 250–1500 VDC
• Output voltage: 24 VDC
• Output current: 12.5 A
• Efficiency: up to 91%
• Isolation voltage: 4000 VDC
• Operating temperature: -40°C to +80°C
• Cooling: free air convection (fanless)
• Ripple & noise: 150 mVp-p
• Line regulation: ±0.5%
• Load regulation: ±1.0%
• MTBF: >200K hrs

Tips

Ensure proper heat dissipation by mounting on a metal surface and leaving adequate clearance around the unit. Use appropriate high-voltage wiring and connectors rated for the input voltage.