THEBEN SELEKTA 170 top3 12-24V Digital Astro Time Switch, 1 Channel, DIN Rail 1704130

Electricians and facility managers use the THEBEN SELEKTA 170 top3 to automate lighting, signage, and other electrical loads with astronomical scheduling. Mounted on a DIN rail in a distribution board, it switches a 16 A circuit based on sunrise and sunset times, with manual override for immediate control.

Key specifications

• Operating voltage: 12-24V AC/DC
• 1 changeover contact, potential-free
• Switching capacity: 16 A at 250V AC (cos φ = 1)
• Astro, weekly, daily, holiday, and random programs
• 800 memory locations
• 10-year power reserve (lithium battery)
• Text-based LCD display
• Zero-cross switching
• External input for push button or switch
• PIN code protection
• Automatic summer/winter time changeover
• Operating temperature: -30 °C to +55 °C
• Protection class: IP20
• DIN rail mounting, 2 TE width

Why choose it

This time switch combines astronomical scheduling with flexible manual control and a robust power reserve. The zero-cross switching extends relay life, and the Bluetooth programming interface via OBELISK top3 simplifies setup from a smartphone or PC.

Ideal use cases

• Outdoor lighting controlled by sunrise/sunset
• Shop window illumination
• Pump or ventilation control in building services
• Access control or time-limited activation of equipment

Good to know

The device operates on 12-24V AC/DC, making it suitable for low-voltage control circuits. The potential-free changeover contact can switch loads up to 16 A. Programming can be done directly on the unit or via the OBELISK top3 Bluetooth adapter (not included).