Trusens pendulum switches trusens m1252 tip over pendulum switch normally closed contacts 230v ac switching voltage 15a switching current 15 to 60 operating angle 25 to 150 c 18mm body diameter a very simple pendulum switch with mechanical contacts this switch offers a cost effective alternative to heavy duty mercury switches fully approved to csa vde and ur for use in domestic heaters and safety systems up to 15a at 240vac trusens m1252 pendulum switch