(19)

(11)

EP 0 572 606 A1

(12)

(43) Date of publication: 08.12.1993 Bulletin 1993/49 (21) Application number: 92925439.0 (22) Date of filing: 25.11.1992

(51) International Patent Classification (IPC):  H01H 71/ 66( . ) H02H 3/ 00( . ) H02J 13/ 00( . ) H01H 71/ 74( . ) H02H 6/ 00( . ) H04Q 9/ 00( . ) (86) International application number: PCT/US1992/010250 (87) International publication number: WO 1993/012566 (24.06.1993 Gazette 1993/15)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 18.12.1991 US 19910809896 (71) Applicant: SQUARE D COMPANY Palatine, IL 60067 (US)	(72) Inventors: HAUN, Andy, Allen Cedar Rapids, IA 52402 (US) FARRINGTON, Ronald, Lee Cedar Rapids, IA 52405 (US) (74) Representative: Sorrell, Terence Gordon  Fitzpatricks, Cardinal Court, 23, Thomas More Street London E1 9YY London E1 9YY (GB)