ABB DWA1 Bluetooth Digital Astronomical Time Switch, 1 Channel, DIN Rail, 230 V AC, 16 A 2CSM222511R1000

Managing lighting or equipment on a fixed daily schedule can be inefficient when sunrise and sunset times shift throughout the year. The ABB DWA1 digital astronomical time switch automatically adjusts switching times based on your location, ensuring lights turn on at dusk and off at dawn without manual reprogramming. Bluetooth connectivity allows convenient setup and monitoring from a smartphone app, while the backlit display and manual controls provide on-device configuration when needed.

Who is it for

This time switch is ideal for electricians, facility managers, and building owners who need reliable automatic control of lighting, signage, or other electrical loads in residential, commercial, or industrial settings. It suits applications where astronomical scheduling, holiday programs, or precise time-based switching is required.

Main features

• 1-channel digital astronomical time switch with automatic sunrise/sunset calculation
• Bluetooth programming via app, plus manual control on the device
• Potential-free changeover contact for flexible load switching
• Switching capacity: 16 A resistive, 10 A inductive at 250 V AC
• Backlit LCD display for clear status and programming
• 50 memory locations for switching programs
• Automatic daylight saving time adjustment and holiday program
• Battery backup for time and program retention (lithium, ~10 years)
• DIN rail mounting, 2 modules wide

Specifications

• Power supply: 230 V AC, 50/60 Hz
• Power consumption: approx. 0.5 W
• Time accuracy: ±0.5 s/day at 25°C
• Minimum switching time: 1 second
• Operating temperature: -20°C to +55°C
• Protection degree: IP20 front, IP40 terminals
• Functions: astro, daily, weekly, pulse, cycle

Tips

For optimal astronomical accuracy, set your geographic coordinates or time zone in the app during initial setup. The battery backup ensures programs are retained during power outages, but verify the battery condition periodically for long-term reliability.