PCB-mounted switch

摘要

A switch for mounting on a printed circuit board comprises a housing (20) having an opening (26) in one face and first and second contacts (12, 14) including portions (12a, 14a) for connection to the board. A moveable beam (18a) extends between the first and second contacts, the beam being biased into a position in which it connects together electrically the two contacts. A contact portion (19) is positioned at the opening (26) of the housing and comprises a projection which extends through the opening (26), arranged such that a pressure applied to the contact portion (19) at the opening moves the beam (18a) thereby to break the electrical contact between the first and second contacts. The projection may seal the opening (26) in the normal state of the switch. <IMAGE>