The YCBZ-40 Change-over Switch (2P-40A) is a modular changeover / isolator switch designed to switch, load, and break the circuit under normal AC conditions. It serves as a switch disconnector conforming to standard IEC 60947-3. Suitable for applications requiring reliable transfer between two power sources or for isolating loads. It supports two poles (2P) with a contact form of 1-0-2 meaning position 1, Off (0), and position 2.