(19)

(11)

EP 0 513 319 A1

(12)

(43) Date of publication: 19.11.1992 Bulletin 1992/47 (21) Application number: 92901374.0 (22) Date of filing: 27.11.1991

(51) International Patent Classification (IPC):  H02H 1/ 06( . ) H02H 3/ 00( . ) H02H 3/ 04( . ) (86) International application number: PCT/US1991/009000 (87) International publication number: WO 1992/009899 (11.06.1992 Gazette 1992/13)

(84) Designated Contracting States: DE GB IT (30) Priority: 30.11.1990 US 19900620510 (71) Applicant: SQUARE D COMPANY Palatine, IL 60067 (US)	(72) Inventors: HAUN, Andy, Allen Cedar Rapids, IA 52402 (US) TESSMER, Earl, John Cedar Rapids, IA 52402 (US) (74) Representative: Sorrell, Terence Gordon  Fitzpatricks, Cardinal Court, 23, Thomas More Street London E1 9YY London E1 9YY (GB)