These are three/four wire Switches (+ ve. -ve and output) workin gon 10-30 V DC. and directly drives DC Relay. These switches are compatible with PLC modules because of its insignificant leakage current (50 u A max) DC switches are divided into two categories according to load connection.
- Load connected between supply wire and output, wire:(NPN)
- Load connected between ground wire & output, wire: (PNP)
Please specify logic whether NO or NC. Special switches with Change-over logic are also available. DC Switches are protected against overload, short circuit and wrong polarity connection. Special switches with high operating frequency are available for applications of speed sensing. Special protection incorporated within the switch against back EMF from inductive load like relay.
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