Asbestos free material for gassing current limiting fuses

Details Asbestos free material for gassing current limiting fuses Asbestos free material for gassing current limiting fuses

1989-01-31

1990-08-14

Jacobs, Lewis T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524456, 524597, C08K 334, C08K 322

Patent

active

049488287

ABSTRACT:
A spider for a gassing current limiting fuse made of an asbestos free material is disclosed. The spider material produces an arc quenching gas and water upon erosion by an arc. The material includes the following proportions of ingredients: 50-80% Al.sub.2 O.sub.3.3H.sub.2 O; 8-22% Wollastonite (CaSiO.sub.3); and 10-25% melamine formaldehyde resin.

REFERENCES:
patent: 2596134 (1952-05-01), Dorst
patent: 2917607 (1959-12-01), Sterling
patent: 3242257 (1966-03-01), Jones et al.

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