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Text version of the page
Basic technical concepts These basic principles apply to all our précision switches. The spécifie characteristics of each model are given in more détail in the relevant product sections. Introduction Our microswitches are high-precision, snap-action microswitches and ■ Low operating force these are the main features for which they are notable : ■ High reliability of travel and force values ■ High ratings but small dimensions ■ Long life ■ Very short travel ■ Large range of actuators for easy adaptation to the most varied applications Microswitch construction — Single-pole changeover microswitch (e.g. "V3" 83 161) Plunger Case Fixing hole Electrical function Changeover 2 Pivot point NC terminal n°2 Normally closed 1 Normally open Blade — Double-pole changeover microswitch (e.g. 83 132 0) Plunger Blade NO terminal n°3 Case Fixed contact Electrical function Changeover Normally closed Normally open NO terminal n°4 NC terminal n°1 e Mobile contact NC terminal n°2 jj ^—> Fixing hole Fixing hole Return spring The NO and NC circuits must both be of the same polarity. 16