SUL 189 hw analogue time switch, 1-channel 1890108

Time switch with half‑day function for flexible weekly control.

This quartz‑controlled time switch combines precise timing with a robust design and offers both daily and weekly programmes. The 1/2‑day OFF function for weekdays lets you interrupt operation in defined 12‑hour blocks, so you can implement exceptions such as public holidays directly on the device without reprogramming the entire schedule. The minimum switching time is 30 minutes, while the half‑day mode allows targeted switching of full 12‑hour periods.

Manual time correction, a permanent ON switch and switching preselection provide high flexibility in day‑to‑day operation. In the event of a power failure, an internal power reserve maintains the stored programme for up to three days. Installation can be carried out either in a control cabinet on a DIN rail or directly on the wall, depending on the application.

Ideal for complex time controls with a structured weekly schedule and planned interruptions.

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