A terminal box includes a box body having a bottom portion, a terminal portion fixed to the box body, a pressing portion, a holding portion and a slide mechanism The bottom portion has an opening portion capable of receiving a terminal inserted therein from the outside. The terminal portion is capable of establishing electric conduction between the terminal portion and the terminal upon contact therewith. The pressing portion is switchable between a contacting state in which the pressing portion clamps the terminal with the terminal portion for establishing electric conduction between the terminal portion and the terminal and a spaced state spaced apart from the terminal portion. The holding portion holds the pressing portion integrally and is slidable on the box body in the direction of movement of the pressing portion to/away from the terminal portion.