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Details

Veröffentlichungs-Nr.

EP3471129

Aktenzeichen

EP18199609

Anmeldetag

10. Oktober 2018

Veröffentlichung

16. März 2022

Erteilung

16. März 2022

Rechtsraum

EP

IPC

H01H71/58H01H71/24H01H71/62H01H73/44H01H71/32

Abstract

An overload relay 10 is disclosed in which a single operator coil 30 is controlled for both tripping and resetting. A permanent magnet 52 and a spring make the device bi-stable, so the coil 30 may be unpowered when in the trip and reset states. Energization of the coil 30 overcomes the magnet 52 to allow tripping, while energization in an opposite direction adds to the magnet force to reset the device. An electromagnetic activation path 56 overrides a mechanical activation path 76 for electromagnetic tripping despite attempted manual resetting. The device may be pulse width modulated to reduce power consumption.

Anmelder

Firma

Rockwell Automation Technologies, Inc.

Land

🇺🇸 USA

Fachgebiete