Electrical protection relay has selection part for selecting reset mode that is different from reset knob and can only be permanently changed from first to second of two positions

摘要

The device has a housing with a trigger mechanism that can be reset automatically or manually and a device for resetting and selecting the reset mode that contains a manual reset knob that can act on the trigger mechanism. The selection device has a part for selecting reset mode that is different from the reset knob. The selection part can adopt first and second positions and can only be permanently changed from the first to the second position. The device has a housing with a trigger mechanism that can be reset automatically or manually and a device for resetting and selecting the reset mode that can be changed between manual and automatic reset states and contains a manual reset knob (15) that can act on the trigger mechanism. The selection device has a part for selecting the reset mode that is different from the reset knob and the selection part (20) can adopt first (H) and second positions and can only be permanently changed from the first to the second position.