Earth leakage sources must work in such a way as to prevent electric shock, either by anticipating automatic power outages (ADS) or by using isolated power systems (IPS) with insulation monitoring devices (IMDs). are. Earth Leakage Circuit Breaker (ELCB) is a safety device used in electrical installations with high ground impedance to prevent shock. Detects small stray voltages on metal enclosures of electrical equipment and cuts off the circuit if dangerous voltages are detected. Marineland products have a guarantee and guarantee and have a high quality.