Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1986-04-03
1987-10-27
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337246, 337279, H01H 8504, H01H 8514
Patent
active
047032995
ABSTRACT:
The high current interrupting fuse of the invention includes an envelope free of sand or similar arc quenching material. The envelope preferably has terminal end caps enclosing the ends of the envelope between which caps a fuse element extends. The envelope has an arc-quenching gas-releasing material at least at the inner surface of the envelope. Arc barrier plugs made of an ablative material surround each end of the fuse element which for ease of assembly freely pass through bores of plugs. The fuse element also preferably passes through metal plates externally of the plugs and adjacent to the end caps.
REFERENCES:
patent: 1545767 (1925-07-01), Hawkins
patent: 1945541 (1934-02-01), Smith
patent: 2328825 (1943-09-01), McMahon
patent: 2363370 (1944-11-01), Strom
patent: 3460086 (1969-08-01), Fister
Arnold Stephen R.
Broome Harold
Hattis Russell E.
Littelfuse-Tracor B.V.
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