The ABB CT‑ERS.22S is a single‑function electronic ON‑delay (delay‑on‑make) timer relay from ABB’s CT‑S timer family. It provides delayed switching functionality: when control power is applied, it waits for a preset delay period, then activates its output contacts. With adjustable time ranging from very short to very long (0.05 second up to 300 hours), the CT‑ERS.22S is suitable for many timing applications in automation, motor control, lighting control, delay‑on‑start, sequential control circuits, or machine control panels. It is compact, DIN‑rail mountable, with a slim 22.5 mm width — making it easy to integrate into control cabinets and distribution panels. The relay includes 2 change‑over (SPDT) contacts, so it can drive loads (directly within rating) or control contactors/other devices following the time delay.
