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Theben Twilight Switches

SELEKTA 174 top3 2 Channel (2 Module) Astronomical Timeswitch

Theben replaces the multi-million selling top2 devices with the redesigned top3 series of digital timeswitches. Highlights include convenient programming via the app, safe data transfer via Bluetooth on the OBELISK top3, as well as LED output of 600W. At the same time, full compatibility with top2 devices is ensured.

  • 16(10)A astronomical timeswitch with weekly programme.
  • Programming by app. 
  • Safe transfer via optional Bluetooth Low Energy OBELISK top3. 
  • Maximum manipulation security, timeswitch programs can only be transferred from the app to the timeswitch when the Bluetooth OBELISK top3 is plugged into the timeswitch. 
  • 100% compatible with top2. 2 channel. 
  • 84 memory locations. 
  • Astronomical timeswitch function (automatic calculation of sunrise and sunset times for the whole year). 
  • Offset for adjusting of sunrise and sunset times. 
  • Position data via coordinates or country/city lists can be programmed. 
  • Fixed ON/OFF switching times can be programmed (e.g. night-time interruption). 
  • Simulation of switching times (calculated astronomical times and programmed ON/OFF switching times). 
  • Reversible astronomical mode (evenings ON – mornings OFF or evenings OFF – mornings ON) or can be deactivated. 
  • Zero-cross switching for relay-saving switching and high lamp loads. 
  • 10 year power reserve (lithium battery).
Selekta174top3 catalog
  • Energy Saving 2015
  • LEDS up to 600W
  • Theben 3 Year Guarantee


Timer Mode Solar
Number of Channels 2
Setting Type Bluetooth
App Availability Android and iOS
App Supports Multiple Devices and Users
Controls LED Lighting 600W (max.)
Voltage Free Contacts Single Pole Changeover
Operating Voltage 230V AC
Power Reserve 10 Years
Switch Rating 230V AC Resistive 16A, Inductive 10A
Operating Temperature -30 to 55ºC
EC Directives Conforms to Latest Directives
Dimensions (mm) Width 35, Height 86, Depth 65.5

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