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Astronomical time switch SELEKTA 172 top2

The SELEKTA 172 top2 astronomical time switch from Theben with weekly program and two external inputs is easy to program using OBELISK top2 software. The Astro function can be deactivated so that the SELEKTA can be used purely as a time switch.

Description

  • Order No. 1720100
  • Astronomical time switch with weekly program
  • 2 channels
  • 84 memory locations
  • Channel 1 or channel 2 can also be used purely as time switch channel
  • 2 external inputs
  • Connectable sensors (external selector switch, sequence timer, staircase light function)
  • Connectable switches (ON or OFF permanent switching, astronomical or special program)
  • 3 special programs with yearly date function per channel
  • Fixed public holidays or date ranges and public holidays dependent on Easter
  • Astronomical times with other night interruption / fixed ON switching
  • permanent ON or OFF switching
  • Count-down timer
  • Astronomical time switch 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
  • DuoFix spring terminals
    • For 2 conductors each
    • Wire or strand (with or without wire end sleeve)
    • Wire diameter: 0.5 – 2.5 mm²
  • Button for releasing plug-in connection
  • Text-oriented user guidance in display
  • Preset date and time
  • fully operable without mains connection
  • Interface for OBELISK top2 memory card (PC programming)
  • 2. insertable switching program
  • Copying programs
  • Storing programs
  • 10 year power reserve (lithium battery)
  • Zero-cross switching for relay-saving switching and high lamp loads
  • Calculated astronomical switching times
  • Programmable ON-OFF switching times
  • Switching preselection
  • Permanent switching ON/OFF
  • Integrated operating hour counter
  • Reset option
  • Service function for monitoring maintenance intervals
  • Holiday program
  • Display back light (can be turned off)
  • PIN coding
  • Automatic summer/winter time changeover
  • can be deactivated
  • Date rule options are already stored for Europe, the USA and other countries
  • own date rule options or changeover around set dates are available

Technical data

SELEKTA 172 top2 
Operating voltage230 – 240 V AC
Frequency50 – 60 Hz
Width2 modules
Installation typeDIN rail
Type of contact2 two-way changeover contacts
Switching outputPotential-free and phase-independent
Opening width< 3 mm (µ)
ProgramWeekly program, Astronomical program
Program functionsON-OFF
Number of channels2
External inputs2
Number of memory locations84
Power reserve10 years
Switching capacity at 250 V AC, cos φ = 116 A
Switching capacity at 250 V AC, cos φ = 0,610 A
Incandescent/halogen lamp load 230 V2600 W
Energy saving lamps 230 V22 x 7 W, 18 x 11 W, 16 x 15 W, 16 x 20 W, 14 x 23 W
LED lamps< 2 W = 30 W or 2-8 W = 100 W or > 8 W = 120 W
Fluorescent lamp load (conventional) not corrected2300 VA
Fluorescent lamp load (conventional) series-corrected2300 VA
Fluorescent lamp load (conventional) parallel-corrected730 VA, 80 µF
Switching capacity min.ca.10 mA
Shortest switching times1 min
Time accuracytypical ± 0.5 s/day (quartz)
Time basisQuartz
Stand-by consumption0,8 W
Memory card suppliedno
Test approvalVDE
Type of connectionDuoFix spring terminals
Keyboards4 touch buttons
Housing and insulation materialHigh-temperature resistant, self-extinguishing thermoplastic
Type of protectionIP 20
Protection classII as per EN 60 730-1
Ambient temperature-30 °C … +55 °C

Connection example

  Astronomische-Zeitschaltuhr_SELEKTA-172-top2_anschlussbild

Scale drawings

Astronomische-Zeitschaltuhr_SELEKTA-172-top2_massbild

Downloads

 FormatDownload
Tender textDOC word_2
Operating instructionsPDF acrobat_2
SoftwareZIP zip_netto
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