The DB2-275-20-NPE is uniquely designed to protect the home / Office / Factory from surges that travel along the Earth and Neutral power lines. This is the only device of it's kind that will identify any faulty neutral and earth connections at the DB board. This product will glow if a fault is detected. The DB2-275-20-NPE is easily identifiable by its transparent green housing.
This product must be installed by a qualified electrician.