972413 Digital Daily Twilight Switch

Digital Twilight Switch 230V

Make: Hugo Muller

Country of Origin: Germany


Download Catalogue – 972413 Series

Download Manual – 972413 Series

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  • Digital twilight switch
  • DIN-rail mounting 35mm
  • Switching capacity 16A
  • Adjustable lux threshold 1 – 50,000 Lux
  • Twilight switch with daily and weekly program
  • Permanent switching by date


Technical data

Supply voltage 230 V, 50–60 Hz
Power consumption (real power) 0,8–1,8 W (depending on the switching status)
Channel (potential-free) Change-over, contact gap < 3 mm (µ)
Contact material AgSnO2
Switching capacity
resitive load:
inductive load:
16 A / 250 V~ at cosϕ=1
6 A bei at cosϕ=0,6
Min. switching power 1.000 mW (10 V / 10 mA)
Max. starting current 50 A
Filament Lamp, Halogen Lamp 2.000 W
Fluorescent Lamp with electron. lamp ballast 1.000 W
Fluorescent Lamp with convent. lamp ballast 750 W
LED (230 V~) / CFL 400 W
Switching functions Lux; Night OFF; Day ON
Adjustable lux threshold 1–50.000 Lux
Adjustable delay times 00:01 bis 59:59 mm:ss
Adjustable light-hysteresis 0–50%
Memory locations 30
Minimum interval 1 min.
Time base Quartz
Quartz accuracy (at 20°C) ≤ ±0,5 sec./day (Quartz accuracy optimized for typical ambient conditions)
Power back-up (at 20°C) approx. 10 years (depends on the Lithium-battery life)
Program security unlimited (E2-PROM)
Display high resolution LCD (visible area 7.5 cm2)
Permitted ambient temperature Sensor unit –30°…+55°C
Control unit –30°…+55°C
Housing self-extinguishing thermoplastic
Dimensions 45 x 35 x 58 mm
Mounting 35 mm DIN-rail
Type of connection Screw terminals (pull-up type)
Type of protection Sensor unit IP 54 to DIN EN 60529
Control unit IP 20 to DIN EN 60529
Class of protection II when installed according to regulations
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