Surge protection. Measuring, controlling, regulating. Sensitive signal inputs can be damaged or destroyed due to potential coupling of surges along wiring paths. It is important to protect MSR devices in their immediate vicinity. Weidmüller offers a comprehensive product range for the MSR sector, providing products in a two-part, pluggable design or terminal block formats with connection types of spring clamp and screw. These products are tailored for both binary and analog signals. Additionally, Weidmüller offers designs with integrated components such as gas discharge tubes or varistors. VARITECTOR stands for versatile and variable surge protection from Weidmüller, which is tested according to the product standard IEC 61643-21. The Varitector series can be used in applications according to IEC 61643-22 / VDE 0845-3 in classes C1, C2, C3, and D1. In the product families VARITECTOR SPC and SSC as well as MCZ OVP, the electrical and mechanical properties are optimally combined. The size and ease of handling play a crucial role. The surge protection is suitable for installation in tight spaces in process, industrial, and building automation.