Features includes;

1. Adjustment dial rated current Ir
2. Stop button. Actuates the N/C contact; does not affect the N/O contact.
3. Reset button.
4. Trip indicator.
5. Setting locked by sealing the cover.
6. Selector for manual or automatic reset.
7. Test button.

Operation of the Test button allows:

– checking of control circuit wiring

– simulation of relay tripping (actuates both the N/O and N/C contacts).