Phase Sequence Relay controls the order of 3 phases feeding motors. If R,S and T phases are in correct order, ON LED on the front panel...
Thermistor Relay is developed to protect motors with PTC. When coil temperatures in the motor exceed the value of Tc temperature limit, the output relay is automatically switched to OFF. There are 3 different turn-off temperature degrees (110°C, 120°C,130°C).