THEBEN Digital Time Switch SEL170top3 Astro 24H/7D with Power Reserve 1 Channel

Digital time switch with astronomical program and 10-year power reserve, engineered for precise lighting and load control in residential and commercial installations. The SEL170top3 Astro automatically calculates sunrise and sunset times for your location, ensuring lighting aligns perfectly with natural daylight throughout the year.

Advantages

Astro function eliminates manual seasonal adjustments, while the 10-year lithium battery preserves programming during power outages. Zero-cross switching extends relay life, and the backlit LCD with plain-text menu simplifies setup. PIN protection prevents unauthorized changes, and Bluetooth connectivity via OBELISK top3 (sold separately) allows wireless programming from a smartphone.

Suitable for

• Outdoor and indoor lighting control
• Street and facade lighting
• Shop window illumination
• Ventilation and pump systems
• Access control and time-dependent automation

Key specifications

• 1 changeover contact (SPDT), 16 A / 250 V AC
• 84 memory locations, shortest switching time 1 second
• Astro, weekly, daily, pulse, and cycle programs
• Automatic summer/winter time changeover
• DIN rail mounting, 2 modules (35 mm), IP20
• Operating voltage 230 V AC, 50/60 Hz
• Ambient temperature -30 °C to +55 °C

Recommendations

For maximum convenience, pair with the OBELISK top3 Bluetooth adapter to program and transfer settings via the THEBEN app. Ideal for electricians and facility managers seeking reliable, maintenance-free time control.