The DZL25 series electric leakage chopper( call the electric leakage chopper as follows) mainly is applicable to communicate that the 50 Hzs, sum settles the work electric voltage as 380 Vs, the sum settles the electric current to the 200 As to go together with to give or get an electric shock in the network, using to carry on the indirect contact protection to the person, also can use to prevent°from the causable fire dangerous because the equipments insulates the damage, produce to connect a ground of breakdown electric current, and can use to assign the electric power and the protection circuit and the power supply equipments of over carry and short circuit, can also be the circuit not multifarious conversion and electric motors not multifarious start it with.