Is there any internal fuse protection on the 24VDC line of the M241 controller?
Issue: Internal fuse protection on the 24VDC line of the M241 controller
Resolution: The internal source of 24 VDC which is in TM241xxxR is not protected against overloads or short circuits. It is only designed to feed local inputs in regular conditions of humidity, temperature and altitude. The maximum supply that can be guaranteed is 400 mA, hence the protection with a 0.5 A type T external fuse.