Form C Relay - Web phrases like 1 form a or 2 form c highlight two key pieces of information. When the relay is energized, the opposite occurs—the normally closed contacts open, and the normally open. When the relay is not energized, the normally closed contacts are closed, and the normally open contacts are open. Form c (or changeover/co) relays have a set of normally open contacts and a set of normally closed contacts.
Web phrases like 1 form a or 2 form c highlight two key pieces of information. When the relay is energized, the opposite occurs—the normally closed contacts open, and the normally open. When the relay is not energized, the normally closed contacts are closed, and the normally open contacts are open. Form c (or changeover/co) relays have a set of normally open contacts and a set of normally closed contacts.