Features

* Three-phase motor start monitoring based on thermal stress calculation with speed switch blocking

function

* Three-phase overcurrent protection with timing characteristics and speed switch latching function

* Three-phase short circuit protection with instantaneous or timed characteristic

* Three-phase undercurrent (loss of load) protection with timed characteristic

* Non-directional earth fault protection with timing characteristics.

* Three-phase thermal overload protection

* Three-phase unbalance protection based on negative phase sequence currents with inverse definite

minimum time characteristic

* Inverted phase protection based on negative phase sequence current

* Accumulated start-up time counter with restart inhibit function

* Circuit breaker fault protection

* Temperature protection stage with timing characteristics

* Emergency start function

* Optional RTD module

* With six measurement inputs

* Supports PTC thermistors and various RTD sensors

* Three additional galvanically isolated digital inputs

* Four precise current inputs

* Time synchronisation via digital inputs

* Trip circuit monitoring

* User selectable rated frequency 50/60 Hz