The Helios Fans RS 3+1 7.5 is a robust isolator switch designed for surface mounting, housed in a durable polymer casing. It features a rotary drive as the operating element, offering secure and user-friendly operation.
This model includes an additional terminal and provides enhanced security through its padlockable design. The switch can be locked in the “0” (OFF) position using up to three padlocks, preventing unauthorized activation. Additionally, it offers the unique option to lock in the “I” (ON) position, making it particularly suitable for applications where continuous operation is critical — such as with smoke extraction fans — to protect against accidental or unauthorized shutdowns.