Function description

Astronomical time switch with weekly program, with external GNSS antenna in scope of delivery
Time synchronisation option via connection of an external DCF or GNSS antenna
1 channel
Programming by app possible
Safe transfer via optional Bluetooth Low Energy OBELISK top3
Maximum manipulation security, time switch programs can only be transferred from the app to the time switch when the Bluetooth OBELISK top3 is plugged into the time switch
100% compatible with top2 (When transferring the switching programs via OBELISK to the PC, the OBELISK software as of V3.8.3.4 must be installed)
3 special programs (small annual program)
3 custom twilight ranges plus adjustable offset (sunset, twilight, darkness)
Astro-pulse

External input
84 memory locations
Connectable sensors (external selector switch, sequence timer)
Connectable switches (ON or OFF permanent switching)
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 (not with 24 V devices)
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

Operating voltage	110 - 230 V AC
Frequency	50 - 60 Hz
Width	2 modules
Installation type	DIN rail
Type of contact	Changeover contact
Switching output	Phase-independent
Opening width	< 3 mm (µ)
Program	Weekly program, Astronomical program
Program functions	ON-OFF, Pulse
Number of channels	1
Number of memory locations	84
Power reserve	10 years
Switching capacity at 250 V AC, cos φ = 1	16 A
Switching capacity at 250 V AC, cos φ = 0,6	10 A
Incandescent/halogen lamp load	2600 W
Energy saving lamps	1100 W
LED lamp < 2 W	50 W
LED lamp 2-8 W	600 W
LED lamp > 8 W	600 W
Fluorescent lamp load (conventional) not corrected	2600 VA
Fluorescent lamp load (conventional) series-corrected	2600 VA
Inrush current	max. 800 A / 200 µs
Switching capacity min.	ca. 10 mA
Shortest switching times	1 min
Time accuracy at 25 °C	typical ± 0,25 s/day (quartz) or DCF77/GPS
Time basis	Quartz/DCF77/GNSS
Stand-by consumption	~0.75 W
Type of connection	DuoFix spring terminals
External antenna connectable
Display	LCD
Keyboards	4 touch buttons
Housing and insulation material	High-temperature resistant, self-extinguishing thermoplastic
Type of protection	IP 20
Protection class	II according to EN 60 730-1
Ambient temperature	-30°C ... 55°C

Diagrams

Downloads

Hand book	PDF	PI_Handbuch_SELEKTA (5,7 MB)
Operating instructions (Smartphone)	PDF	SELEKTA 171 172 top3 mobil (2,8 MB)
Operating instructions	PDF	SELEKTA 171 172 top3 (3,6 MB)
Software	ZIP	OBELISK_top2_3_V3.8.6.1 (92,0 MB)
Data sheet	PDF	SELEKTA 171 top3 RC (1,1 MB)
briefing	PDF	SB SELEKTA 171 top3 RC T, product specification, timer + antenna set (192,8 kB)

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