I'm using Arduino UNO to control an imatic relay board with 16 relays model srd-05vdc-sl-c. I use all the relays to control some linear actuators and everything is working fine.
My only question is: are the coils used for these relays for continuous use? I mean, can I continue to give power to some coils for more than 30 minutes? Or will they be destroyed? Should I write a specific Arduino routine to power off all the coils when not used, or can I leave them powered for 30 or more minutes?
I checked the relays and they do not overheat.