Title:
LINE PROTECTION SWITCH
Document Type and Number:
Japanese Patent JPS5673831
Kind Code:
A
Abstract:
1. A single- or multi-pole low-tension line circuit breaker with a contact position (22, 24) comprising a movable contact (22) and a fixed contact (24) for each pole, having an arc extinction chamber associated with the contact position (22, 24), on which position by means of a switch mechanism (12) an overcurrent trip acts in the event of an overload current or short circuit current, the fixed contact (24) being mounted on a guide bar which forms both an arc guide bar (26, 50) and a terminal, characterised in that the contact position (22, 24) is associated with a component (42, 58a, 63, 64) which is made from a memory alloy and which is deformed when and after its transition temperature is exceeded and so forces the contacts irreversibly apart.
Inventors:
RUUTSU NIIMEIAA
Application Number:
JP15573580A
Publication Date:
June 18, 1981
Filing Date:
November 05, 1980
Export Citation:
Assignee:
BBC BROWN BOVERI & CIE
International Classes:
H01H71/12; H01H73/04; H01H71/14; H01H73/00; (IPC1-7): H01H73/00