MEAN WELL DRS-240-48, Programmable backup power supply for DIN rail 240W, 48V

The "all-in-one" solution combines 240 W AC/DC power supply, DC-UPS system, intelligent battery charger, and monitoring unit in a compact design for DIN rail mounting. With a universal input of 90–305 V AC and cooling by natural convection, it is ideal for industrial and security applications that require stable power and backup in one device. DIN rail TS-35/7.5 or 15 installation support allows for easy integration into existing systems.

Flexibility that meets strict standards

The programmable backup power source allows configuration of signals and alarms via the communication interface. With the ability to set charging current in the range of 20–100 % and the choice between 2 or 3-stage mode using a DIP switch, the unit can be precisely tailored to the system's requirements. It is suitable for both lead and lithium-ion batteries and supports charging curve adjustment using the SBP-001 tool for maximum battery lifespan and safety.

Intelligent backup management with advanced features

Ensure reliable operation of your system with C-type relay contacts and clear LED indicators for AC status, battery, charger, and output. The device supports fast battery charging according to the current load, which increases efficiency in backup power. Communication is facilitated via MODBus with optional CANBus interface, ideal for industrial applications. Advanced protection against overvoltage, short circuit, overheating, and reverse polarity ensures safe and stable operation without damage to the device.

Key features

• 240 W AC/DC power supply
• DC-UPS system with intelligent battery charger
• MODBus support and optional CANBus
• LED status indicators and C-type relay contacts
• Overload protection through current limiting, shutdown after 3 s
• Output voltage 48 V, current 10 A, efficiency 92%