Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1979-01-15
1981-08-11
Beha, Jr., William H.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337187, 337248, 337280, H01H 8538
Patent
active
042837006
ABSTRACT:
A time-lag fuse with improved breaking capacity is made of double-tubular construction comprising an inner tube made of a material having high thermal conductivity and low thermal impact resistance and an outer tube made of a material with low thermal conductivity but high thermal impact resistance. No arc-quenching material is required and greater safety is afforded when the fuse is subjected to an overload current.
REFERENCES:
patent: 2135164 (1938-11-01), Brock
patent: 2773960 (1956-12-01), Sundt et al.
patent: 4100523 (1978-07-01), Arikawa et al.
Beha Jr. William H.
San-O Industrial Co., Ltd.
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