As a professional manufacturer specializing in silver contacts, in-mold riveting parts, stamping components, and low-voltage switches (such as wall switches and leakage protection switches), we focus on delivering safe electrical solutions for both professionals and end-users. Our mission is to provide the most reliable and comprehensive safety power-related services in the industry.
Normally closed contacts are those that remain closed when the relay is not energized. In contrast, normally open contacts are in an open state under normal conditions.
When devices like limit switches or pressure relays are not subjected to external forces, the contacts that are open are considered normally open, while those that are closed are referred to as normally closed.
A relay's coil is considered de-energized when it is not receiving power, or when the switch controlling the coil is in an open position. In this state, the relay’s normally open contact remains open, and the normally closed contact stays closed.
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