The WE77/EX-2 is a high-performance, intrinsically safe switch amplifier designed for industrial automation applications. It features two channels with control circuit EEx ia IIC, making it suitable for hazardous environments. The device operates on a supply voltage of either 115 V AC or 230 V AC, depending on the model. It provides galvanic isolation and includes digital input signals with connection terminals on the field side (terminals 17 and 18). The WE77/EX-2 supports reversible operation modes and incorporates lead breakage (LB) monitoring for enhanced safety and reliability. Its relay output and dual-channel logic make it ideal for controlling and monitoring safety-related circuits in explosive atmospheres.

Pepperl+Fuchs specialises in industrial automation and intrinsic safety solutions, offering products such as sensors, explosion-proof equipment, and industrial communication systems. Known for innovation and reliability, their technologies enhance efficiency and safety in industries like manufacturing, process automation, and hazardous environments.