Enerdoor’s unique R&D and field testing lead to the design of a very innovative product line for industrial and commercial motors controlled by VFDs. Unlike similar products, the FIN47SNB is able to protect both winding insulations and bearings at the same time. The FIN47SNB is used in parallel to the system and is an ideal solution for clients in need of improving the reliability of winding insulation and bearings. It offers very low power loss and protects any type of motor configuration, including: 3-phase, 3-phase plus ground, and 3-phase plus star point plus ground.