Theben TR 648 top3 RC KNX Annual Time Switch, 2-Channel, DIN Rail, 16 A, GPS, Astro, 800 Programs 6489130

The Theben TR 648 top3 RC KNX stands out as a high-precision annual time switch engineered for KNX building automation. Unlike conventional timers, it combines two independent 16 A changeover contacts with a rich suite of functions—astro, holiday, random, pulse, cycle, and hour counter—all programmable via ETS, the OBELISK top3 memory card, or directly on the backlit LCD. Its 10-year power reserve and optional GPS synchronization ensure long-term accuracy even in the event of a bus voltage failure.

Highlights

• Two channels, each with a 16 A changeover contact (SPDT) for flexible load switching
• Annual, weekly, daily, and astro programs with automatic seasonal adjustments
• 800 switching programs per channel, shortest switching time 1 second
• Manual override: permanent ON/OFF or temporary ON/OFF
• 10-year lithium battery power reserve for uninterrupted timekeeping
• Backlit LCD for clear status and programming
• KNX bus powered (21–30 V DC), only 0.3 W consumption
• Compact 2 TE (35 mm) DIN rail mounting, IP20 protection

In daily use

Install the TR 648 top3 RC KNX on a standard DIN rail in distribution boards or control cabinets. Its two channels can independently control lighting, heating, ventilation, pumps, or other loads up to 16 A each. Use the astro function to switch lights based on sunrise/sunset times, with optional offset adjustments. The holiday program prevents unnecessary switching during absences, while the random function simulates presence for security. The cycle and pulse functions are ideal for irrigation or ventilation intervals. Programming is straightforward via the front buttons and LCD, or quickly duplicated using the OBELISK top3 memory card. For KNX integration, the device can be fully configured and controlled through ETS, allowing seamless integration with other KNX actuators and sensors. The hour counter helps track operating hours for maintenance scheduling.

Full specifications

• Brand: Theben
• Model: TR 648 top3 RC KNX
• MPN: 6489130
• EAN: 4003468640142
• Device type: KNX annual time switch
• Number of channels: 2
• Mounting type: DIN rail
• Operating voltage: 21–30 V DC (KNX bus)
• Switching output type: 2x changeover contact (SPDT)
• Max. switching capacity per channel: 16 A at 250 V AC, cos φ = 1
• Program types: annual, weekly, daily, astro
• Time synchronization: GPS (external antenna required)
• Power reserve: 10 years (lithium battery)
• Display: backlit LCD
• Programming interface: device, OBELISK top3 memory card, KNX ETS
• Shortest switching time: 1 second
• Number of switching programs: 800 per channel
• Special functions: astro program, holiday program, random switching, pulse function, cycle function, hour counter
• Manual override: permanent ON/OFF, temporary ON/OFF
• Data backup: via OBELISK top3 memory card
• Protection class: IP20
• Operating temperature range: -30 °C to +55 °C
• Power consumption (KNX): 0.3 W
• Module width: 2 TE (35 mm)

Final note

The TR 648 top3 RC KNX is a versatile and reliable time switch for demanding KNX installations, offering extensive programming options and robust switching capabilities in a compact form factor.