EP 0470215 A4 19930505 - A CIRCUIT BREAKER

Title (en)

A CIRCUIT BREAKER

Publication

EP 0470215 A4 19930505 (EN)

Application

EP 91903475 A 19910121

Priority

IE 65690 A 19900223
US 9100380 W 19910121

Abstract (en)

[origin: WO9113454A1] A residuel current circuit breaker (1) has a partition wall (3) which separates an over-current protection device (4) from a residual current detection circuit (5). A plunger rod (24) extends through a bore (23) in the armature (21) of a coil (20) and is moved independently through the coil (20) to trip the breaker if a residual current is detected by the circuit (5). The plunger rod (24) is moved by a drive rod (31), the operation of which is controlled by a permanent magnet (35) which retains the drive rod (31) retracted and an electromagnet (30) which allows the drive rod (31) to drive forwardly under the action of a spring (32) in the event of a residual current being detected. The plunger rod (30) is reset by a reset lever (40) which is moved when an operating handle (18) of the breaker moves from a non-tripped to a tripped position on tripping of the breaker.

IPC 1-7

H01H 73/00; H02H 3/00

IPC 8 full level

H01H 73/36 (2006.01); H01H 83/02 (2006.01); H01H 83/20 (2006.01); H01H 71/10 (2006.01); H01H 83/04 (2006.01)

CPC (source: EP)

H01H 83/20 (2013.01); H01H 71/1072 (2013.01); H01H 83/04 (2013.01)

Citation (search report)

[X] EP 0146721 A1 19850703 - SURSUM ELEKTRIZITAET [DE]
[Y] EP 0161968 A1 19851121 - LEGRAND SA [FR]
[Y] US 3256407 A 19660614 - KLEIN KEITH W
[X] CH 670726 A5 19890630 - MAIER & CIE C
[X] CH 428907 A 19670131 - GARDY PARTICIP APP [CH]
[A] FR 2412160 A1 19790713 - ALSTHOM CGEE [FR]
[A] US 4090159 A 19780516 - LANG WALTER W, et al
[E] WO 9205569 A1 19920402 - SQUARE D CO [US]
See references of WO 9113454A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 9113454 A1 19910905; AU 639986 B2 19930812; AU 7225691 A 19910918; CA 2053238 A1 19910824; DE 69113364 D1 19951102; DE 69113364 T2 19960314; EP 0470215 A1 19920212; EP 0470215 A4 19930505; EP 0470215 B1 19950927; IE 71036 B1 19970115; IE 900656 A1 19910828; JP 2735384 B2 19980402; JP H04507168 A 19921210

DOCDB simple family (application)

US 9100380 W 19910121; AU 7225691 A 19910121; CA 2053238 A 19910121; DE 69113364 T 19910121; EP 91903475 A 19910121; IE 65690 A 19900223; JP 50360391 A 19910121