2CSM221201R1000 ABB DY365 Digital Astronomical Time Switch 2-Channel 230 V AC

Why Choose the ABB DY365 Digital Time Switch?

The ABB DY365 is an advanced digital astronomical time switch designed for automatic control of electrical equipment using daily, weekly, annual and astronomical programmes. With two onboard switching channels and extensive programmable functionality, it provides flexible time-based control for lighting, building services and other electrical loads.

The DY365 incorporates two changeover relay outputs, each capable of switching loads up to 16 A at 250 V AC. Up to 450 programmes and 900 events can be stored, while compatible DY365 2CE and DY365 4CE remote actuators allow the system to control up to eight physical relay channels through its communication bus.

Operating from a 230 V AC, 50/60 Hz supply, the DY365 combines a backlit LCD, replaceable backup battery and Bluetooth BLE 4.2 connectivity for convenient programming from compatible mobile devices. Optional DY GPS and DY DCF77 modules can also be connected through the bus for accurate external time synchronisation.

Key Advantages

• Supports daily, weekly, annual and astronomical programming.
• Two onboard relay channels for independent load control.
• Expandable to eight physical relay channels using compatible remote actuator modules.
• Stores up to 450 programmes / 900 events across available channels.
• Bluetooth BLE 4.2 enables convenient programming from compatible smartphones or tablets.
• Communication bus supports DY365 extension and external time-synchronisation modules.
• Replaceable lithium backup battery preserves settings during mains power interruptions.

Key Features

• ABB DY365 digital astronomical time switch.
• 2 onboard changeover relay outputs.
• Maximum switchable load of 16 A at 250 V AC per onboard relay.
• 230 V AC, 50/60 Hz power supply.
• Daily, weekly and annual time programmes.
• Astronomical switching programmes.
• Up to 8 controllable channels with optional DY365 2CE and DY365 4CE modules.
• 450 storable programmes / 900 events.
• Backlit LCD display.
• Bluetooth BLE 4.2 communication interface.
• Bus connection for remote actuators and compatible DY GPS or DY DCF77 modules.
• Compact 4-module DIN-rail construction.

Advanced Time and Astronomical Load Control

The ABB DY365 combines conventional time scheduling with astronomical programming, allowing electrical loads to operate according to fixed schedules or calculated sunrise and sunset times. Each channel can be assigned its own programme, making the unit particularly useful for applications where several electrical circuits require different operating schedules.

Its expansion bus provides a scalable control architecture. The two onboard relay channels can be supplemented with DY365 2CE and DY365 4CE remote actuators to provide up to eight physical relay channels, while optional DY GPS or DY DCF77 modules can provide external time synchronisation. Bluetooth connectivity further simplifies configuration by allowing programme data and settings to be prepared on a compatible mobile device and transferred to the time switch.

Typical Applications

• Commercial and public-building lighting control.
• Exterior and architectural lighting.
• Street, car-park and signage lighting schedules.
• Heating, ventilation and building-services control.
• Pump and irrigation scheduling.
• Multi-channel electrical load management requiring annual or astronomical programmes.