Grounding system has capture points at the water inlet and outlet. Leakage current in water less than 5mA . 
When water has a minimum resistivity of 1,300 Ωcm at 22ºC.
Suitable for working safely in pressures up to 40 meters of water column (400kPa). Conductors with 50cm, allowing electrical connection inside the passage box, eliminating apparent splices. 
Mechanism designed with cushioning system, presenting longer contacts life.