An electromagnetic relay is a precision device that lets low-power electrical signals control a heavier current circuit by means of magnetic force. At Campus Component, we feature relays built with coils, armatures, and contact sets that actuate as soon as coil current generates a magnetic field, thus connecting or disconnecting circuits. These relays serve in automation, protection, ... https://www.campuscomponent.com/blogs/post/what-is-electromagnetic-relay-and-its-types