Heat dissipating means for circuit-breaker and circuit-breaker with such a heat dissipating means
Patent, 2012

The present invention discloses a circuit breaker comprising: a vacuum chamber; a fixed contact and a movable contact disposed in a vacuum chamber; a fixed contact stem supporting said fixed contact in said vacuum chamber and extending outwards from a first end of said vacuum chamber; a movable contact stem supporting said movable contact in said vacuum chamber for reciprocal movement between contact with and separated from said fixed contact, and extending outwards from a second end of said vacuum chamber; a first electrical conductor coupled to said fixed contact stem; a second electrical conductor coupled to said movable contact stem; at least one heat dissipating means disposed for at least one of said fixed contact and movable contact; wherein, the heat dissipating means is hollow and has an external surface and internal surface; a plurality of fins provided on said internal surface constitute a passage through which air is convected in a direction parallel to that of reciprocal movement of movable contact stem.

Inventor

Shailendra Singh

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

US8278582

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

More information

Latest update

10/15/2018