the products is applicable to protect line conductor and overload,and short circuit of small sealed motors.it is mainly for protection of circuits with ac 220v and 50hz/60hz,and for unfrequent conversion under normal conditions as well.its action can be up to two poles with its only one pole volume and be used as a leakage breaker by assembling with leakage.it is produced as per en898-87,iec947-2 standards.