To provide a live-part protection cover for a magnetic contactor, excellent in durability without being deformed or cracked due to creases caused by repeated use, and excellent in handlability at the time of attachment/ detachment and in reliability of attachment.

A cover 1 is provided with a window part 10 that can be fitted to an attaching part 32 of a magnetic contactor 3. Hanging parts 100 to be slidingly hung on hanging recessed parts 320 of the attaching part 32 are formed at both side edge parts and upper corner parts of the window part 10. Stoppers 110a, 110b are projectingly provided on an attaching surface 11 of the cover 1 for substantially fixing its position by being hung on step parts 331, 332 of a coating member 33 at the time of attachment.