This relay is specially applicable to protect motor which need dependable and accurate protection relays for every type of start (trip classes 10, 20 and 30): Motor control centre (MCC), Pumps, Compressors, Ventilators, Centrifugal machines, Conveyor belts, Cranes, Valves, Air conditioning, Machine tools,Etc. Gives excellent protection for L.V. motors up to 1000 Vac Broad range of current adjustment (1 to 630 and over) Discriminative signalling of the relay trip cause Suitable for any type of motor start or working cycle. Three types of adjustement for trip class, 10, 20 and 30 Memorizes the thermal image of the motor, either heating or cooling External display module (22,5 mm) Three-year guarantee   Model Code Range Motor 400 V Aux. supply 230V Aux. supply 115V  (A) HP kW C9 11203 11202 3 – 9,3 2 – 5,5 1,5 – 4 C21 11223 11222 9 – 21,6 7,5 – 12 5,5 – 9 C45 11243 11242 20 – 45,2 15 – 30 11 – 22 PROTECTION FUNCTIONS Overload Phase imbalance or phase loss