Welker offers two magnetic cylinder switches: L3 (PNP) and L5 (NPN). They can be mounted in t‐slot cylinders or on tie rod cylinders. Both switches are short circuit & overload protected and IP 65 / IP 67 rated for harsh environments. L3 Cylinder Switch The Welker L3 solid state cylinder mounted sensor is immune to the majority* of direct and alternating field welding applications. L3 Cylinder Switch (Dual Sensor) L3S (Single Sensor) Features: Comparable to World Switch in function and performance IP 65 / IP 67 rated for harsh environments Short circuit & overload protected Mounts easily to T‐slot and tie rod cylinders Weld spray resistant cable covers L3 (dual sensor) shown *Note that some mid and low frequency DC resistance applications (i.e. aluminum resistance welding applications) may cause a fault. In these applications, it is reco

L5 Cylinder Switch L5 Cylinder Switch (Two, Single Sensor) L5S (Single Sensor)  3‐wire M12 DC connector (2 switches required per cylinder) Not weld field immune

Switch Specifications Electrical data Electrical design Operating voltage Current consumption Protection class Output function Voltage drop Current rating Short‐circuit protection Overload protection Switching frequency Magnetic sensitivity Monitoring range Travel speed Accuracy/deviations Hysteresis Repeatability Power‐on delay time Ambient temperature Protection Mounting Housing material Fastening clamp Weight Reaction times Environment Mechanical data Display Electrical connection LED output status indication Connection DC PNP DC NPN 10...30V DC; cULus ‐ Class 2 source required < 10 mA III...