Updated: 07.11.2026
A Isolating relay decouples several roller shutter or awning motors that are to be operated together via one switch. Without an isolating relay, motors with mechanical end positions can feed voltage back into the opposite direction via the shared line.
When do I need an isolating relay?
- two or more cable motors on one blind switch
- Group or central control by cable
- not needed with radio motors – there you form groups via the transmitter
Radio alternative
With radio motors such as the A-OK AM45 radio isolating relays and control cables are no longer needed. More in the guide Central control of several roller shutters.
Frequently asked questions
Can I simply connect two motors in parallel?
Not with motors with mechanical end positions – this leads to malfunctions and can damage the motors.
