Theben RAMSES 708 S Electronic Surface-Mounted Room Thermostat 7080003

Switch up to 6 A at 250 V AC with the potential-free changeover contact of the Theben RAMSES 708 S — a robust surface-mounted room thermostat built for precise on/off temperature control. Its analog dial spans +5 °C to +30 °C, while the internal NTC sensor reads the room in real time. Frost protection and a temperature reduction input add practical energy-saving control for heating or cooling systems.

Overview

The Theben RAMSES 708 S (MPN 7080003) is an electronic room thermostat designed for surface mounting. It operates on 230 V AC at 50 Hz and uses a 2-point control algorithm to maintain the set temperature. The unit features a single potential-free changeover contact, making it compatible with a wide range of heating and cooling equipment, including boilers, zone valves, and fan coil units. Its IP30 protection class suits indoor installation in living spaces, offices, and commercial buildings.

What stands out

• Potential-free changeover contact rated 6 A / 250 V AC for versatile switching.
• Analog dial with clear temperature scale from +5 °C to +30 °C — no display needed.
• Selectable heating or cooling mode via internal switch.
• Frost protection function prevents room temperature from dropping below a safe level.
• Temperature reduction input for night setback or external control.
• Low power consumption of approximately 1 W.

Technical details

• Mounting type: surface-mounted (AP).
• Operating voltage: 230 V AC, 50 Hz.
• Switching output: 1 potential-free changeover contact.
• Max. switching current: 6 A at 250 V AC, cos φ = 1.
• Temperature setting range: +5 °C to +30 °C.
• Control type: 2-point (on/off).
• Operating mode: heating or cooling, selectable.
• Temperature sensor: internal NTC.
• Display: none (analog dial).
• Protection class: IP30.
• Color: white (RAL 9010).
• Connection: screw terminals.
• Power consumption: approx. 1 W.
• Ambient temperature: 0 °C to +50 °C.

Our verdict

A straightforward, reliable thermostat for basic room temperature control. The potential-free contact and reduction input make it a flexible choice for both heating and cooling applications, while the analog dial keeps operation simple. Ideal for installers and users who prefer a no-frills, mechanical feel with electronic accuracy.