CURRENT LIMITING CIRCUIT BREAKERS WITH PTC (POSITIVE TEMPERATURE COEFFICIENT RESISTIVITY) ELEMENTS AND ARC EXTINGUISHING CAPABILITIES - Patent 0934597

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EP 0 934 597 A1

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(43)	Date of publication:
	11.08.1999 Bulletin 1999/32

(21)	Application number: 98942230.0

(22)	Date of filing: 25.08.1998

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International Patent Classification (IPC):

H01H 9/ 32^{( . )}

H01H 9/ 42^{( . )}

(86)	International application number:
	PCT/US1998/017543

(87)	International publication number:
	WO 1999/010903 (04.03.1999 Gazette 1999/09)

(84)	Designated Contracting States:
	DE FR GB IE IT

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Priority:

25.08.1997 US 19970918755

(71)	Applicant: SQUARE D COMPANY
	Palatine, IL 60067 (US)

(72)	Inventors:
	CHEN, William, W. Cedar Rapids, IA 52404 (US) GREGORY, George, D. Iowa City, IA 52246 (US)

(74)	Representative: Gray, John James, et al
	Fitzpatricks, 4 West Regent Street Glasgow G2 1RS Glasgow G2 1RS (GB)

(54)	CURRENT LIMITING CIRCUIT BREAKERS WITH PTC (POSITIVE TEMPERATURE COEFFICIENT RESISTIVITY) ELEMENTS AND ARC EXTINGUISHING CAPABILITIES