Title:
TRIP UNIT
Document Type and Number:
WIPO Patent Application WO/2011/036261
Kind Code:
A3
Abstract:
The present trip unit is an earth leakage device for switching off a mechanism in the case of detecting an earth leakage current. The closed housing (2) is protecting the movable parts of the actuation unit inside the housing from iron particles and dust coming from the environment. The specific positioning of parts of the actuation unit prevents iron and dust particles from contaminating the contact surface (Y) between the coil core (3) and the stator parts (61) of the actuator. The coil core and/or stator parts of the actuation unit are manufactured of iron in contrast to prevalently used expensive Fe-Ni alloy material.
Inventors:
HEMMER ALOYSIUS (NL)
NIEHOFF RONALDUS (NL)
VAN VLIJMEN STEFAN (NL)
NIEHOFF RONALDUS (NL)
VAN VLIJMEN STEFAN (NL)
Application Number:
PCT/EP2010/064169
Publication Date:
June 30, 2011
Filing Date:
September 24, 2010
Export Citation:
Assignee:
EATON IND NETHERLANDS BV (NL)
HEMMER ALOYSIUS (NL)
NIEHOFF RONALDUS (NL)
VAN VLIJMEN STEFAN (NL)
HEMMER ALOYSIUS (NL)
NIEHOFF RONALDUS (NL)
VAN VLIJMEN STEFAN (NL)
International Classes:
H01H71/32; H01H71/24; H01H71/74
Foreign References:
| DE4017743A1 | 1991-01-10 | |||
| FR2344948A1 | 1977-10-14 | |||
| FR2897979A1 | 2007-08-31 | |||
| EP1372176A1 | 2003-12-17 | |||
| FR2883098A1 | 2006-09-15 |
Attorney, Agent or Firm:
TABELING, Marcella (Patent Law DepartmentRoute de la Longeraie 7, Morges, CH)
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