Molding composition for arc circuit breakers

Electricity: circuit makers and breakers – Liquid contact – Time delay

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Details

200149A, 252 62, 1062863, 1062866, 501123, 501154, H01H 3308

Patent

active

045117730

ABSTRACT:
A ceramic useful as an electrically insulating material is produced by calcinating wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece. The ceramic is employed within arc circuit breakers as a substitute for asbestos liners, dividers and arc splitters.

REFERENCES:
patent: 4259196 (1981-03-01), Grossman

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