Electrical switching device for thermal and overvoltage protecti

Details Electrical switching device for thermal and overvoltage protecti Electrical switching device for thermal and overvoltage protecti

1977-05-31

1978-04-18

Harris, George

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

337409, H01H 3776

Patent

active

040853977

ABSTRACT:
A normally open temperature sensitive electrical switching device includes a heat fusible electrically conductive pellet which melts and provides an electrically conductive path through the switching device at a predetermined temperature level and, further, includes arc contacts defining an air gap across which arcing will occur when a sufficient potential is supplied to the switching device. A first electrically conductive electrode and second electrically conductive electrode are electrically connected to first and second electrical leads provided for an electrical connection to the device. A nonconductive mounting arrangement holds the first and second electrodes in spaced relation. The heat fusible conductive pellet is positioned in contact with the second electrode and defines the air gap of predetermined dimension with the first electrode. Current will therefore flow between the first and second electrical leads when the voltage across the air gap is sufficient to cause arcing or when the fusible pellet is heated to its predetermined fusion temperature.

REFERENCES:
patent: 2934628 (1960-04-01), Massar et al.
patent: 3180958 (1965-04-01), Merrill

Affiliated with

Also associated with

Rating

Electrical switching device for thermal and overvoltage protecti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical switching device for thermal and overvoltage protecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical switching device for thermal and overvoltage protecti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2149007