(19)
(11) EP 0 367 436 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.04.1991 Bulletin 1991/16

(43) Date of publication A2:
09.05.1990 Bulletin 1990/19

(21) Application number: 89310548.6

(22) Date of filing: 13.10.1989
(51) International Patent Classification (IPC)5: H01H 3/00, H01H 71/54, H01H 1/20
(84) Designated Contracting States:
AT BE CH DE ES FR GR IT LI LU NL SE

(30) Priority: 15.10.1988 GB 8824219

(71) Applicant: ASHLEY & ROCK LIMITED
Ulverston Cumbria LA12 9BN (GB)

(72) Inventor:
  • Patton, Stuart
    Swarthmoor Ulverston Cumbria, LA12 0JA (GB)

(74) Representative: Cardwell, Stuart Martin et al
Roystons Tower Building Water Street
Liverpool, Merseyside L3 1BA
Liverpool, Merseyside L3 1BA (GB)


(56) References cited: : 
   
       


    (54) Electric isolator switch


    (57) An electrical isolator switch having a moving contact member (20) in the form of a link bridging spaced stationary contacts (22, 24) in which the moving contact has a preference for breaking its electrical contact with one (24) of the stationary controls rather than the other (normal break action) but can be broken at the other, and wherein means (x) is provided to limit movement of the moving contact member away from said other stationary contact to force breaking at said one contact.







    Search report