Master switch

■  Overview

The contact system of wall mounted switch consists of enclosure, handle, fork arm, spring, stationary contact and movable contact. The stationary contact is fixed in the enclosure pairing with the sliding contact (movable contact). The movable contact is rolling type and connected with fork arm. Both ends of the spring are between the handle and fork arm.

■  Contact materials

Ag，AgNi，AgCdO and AgSnO₂ solid rivets, bimetal and trimetal rivets made of low-current materials.