Description
- Both digital signal output and relay with make contact react to configured measuring range limits (switching ON/OFF delay and threshold value switch function configurable with up to two threshold values).
- Configurable RTD factor
- Adjustable software filter
- Input/Output response simulation via configuration display
- Safe 3-way isolation with 4 kV test voltage per EN 61140
The WAGO 2857 series RTD threshold value switch features DIP or software configuration and a display, with one analog input supporting various RTD types (Pt100 to Pt20000) and potentiometers (0-100 k?) in 2-wire, 3-wire, or 4-wire configurations. It operates on a supply voltage of 16.8-31.2Vdc (24Vdc nominal) and includes Push-in CAGE CLAMP spring connections for easy installation on a DIN-35 rail (12.5mm width). The device is rated for an ambient temperature range of -40°C to +70°C and has an IP20 protection rating, equivalent to model 2857533.