Abstract: An explosion resistant motor has a metal casing with a cluster of electrical terminals extending from a wall thereof and sealed thereto. A section of metal pipe has one end welded to the casing wall and surrounds the terminal cluster. A metal clip mounts an inherent thermal overload device in the open end of the pipe. A positive temperature coefficient resistance starting relay in the pipe is coupled between one motor terminal and one overload terminal. Electrical leads are connected to another motor terminal and another overload terminal and extend out of the pipe through a conduit welded to the wall thereof. A pipe cap is threaded on the open end of the pipe to complete an explosion resistant enclosure for the overload and starting relay, and also to secure the overload in place.