Uses of normally closed contacts

Create Date: 2024-8-30 12:03:23|Source: IDEC/Izumi

There are two contacts on a start button switch, normally open and normally closed, what is the use of normally closed?

The normally closed contact is used to turn on the circuit when you press it.

Normally, there will be a maintenance relay in this circuit to keep the circuit on. This way, when you release the button, the loop passes through the sustain relay that remains energized, allowing the system to function normally.

Until the stop signal such as the shutdown button or emergency stop arrives.

Uses of normally closed contacts

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