857-820 WAGO Signal Relays

Wago 857-820 is an analog transducer designed for temperature signal conditioning with a clipping circuit feature. It operates on a supply voltage range of 16.8-26.4Vdc, with a nominal 24Vdc, and does not require an AC supply voltage. This part utilizes push-in CAGE CLAMP spring connections for secure and efficient connectivity and is configured via a DIP switch. It is designed to operate within an ambient air temperature range of -25°C to +70°C and can be stored in temperatures ranging from -40°C to +85°C. The degree of protection offered by the unit is rated at IP20, ensuring protection against solid objects larger than 12.5mm but not against water. It supports a wide range of analog inputs and outputs, including various KTY and ST sensors for temperature measurement and can output signals in multiple formats (0-10mA / 2-10mA / 0-20mA / 4-20mA / 0-5Vdc / 1-5Vdc / 0-10Vdc / 2-10Vdc) to accommodate different monitoring and control systems. The device's mechanical resistance is highlighted by its ability to handle a load of 40mA at 24Vdc nominal load, and it is designed to operate within a humidity range of 5-95% RH without condensation. Its compact dimensions are H94mm x W6mm x D97.8mm, making it suitable for mounting on a DIN-35 rail.