857-452 WAGO Signal Relays

Wago 857-452 is an interface unit designed as a 2-channel passive isolator with push-in CAGE CLAMP spring connections. It operates without a supplementary voltage and is suitable for ambient air temperatures ranging from -25°C to +70°C for operation and -40°C to +85°C for storage. This unit is designed for mounting on a DIN-35 rail and offers an IP20 degree of protection. It supports 2 x analog inputs (0-20mA / 4-20mA) and 2 x analog outputs (0-20mA / 4-20mA), ensuring a transmission error of ≤ 0.1%, a load error of ≤ 0.05%, and a temperature coefficient of ≤ 0.01%/K. The rated insulation voltage (Ui) is 6 mm, and the unit's dimensions are H94mm x W6mm x D97.8mm. It is designed to withstand 5-95% relative humidity without condensation.