Intermediate relay

Intermediate relays are used in relay protection and automatic control systems to increase the number and capacity of contacts, and are also used to transmit intermediate signals in control circuits.

The intermediate relay is composed of a fixed iron core, a moving iron core, a spring, a moving contact, a static contact, a coil, a terminal block and a shell. When the coil is energized, the moving iron core acts to attract and close under the action of electromagnetic force, driving the moving contact to move, separating the normally closed contacts and closing the normally open contacts; when the coil is powered off, the moving iron core drives the moving contacts under the action of the spring reset.