Jump to latest postWhich of the following circuit breaker designs has the lowest voltage rating?
Air-break circuit breaker
Tank type oil circuit breaker
Air-blast circuit breaker
SF6 circuit breaker
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Junior Member
Posted July 7, 2019
Pro Subscriber
Which of the following circuit breaker designs has the lowest voltage rating?
Air-break circuit breaker
Tank type oil circuit breaker
Air-blast circuit breaker
SF6 circuit breaker
Experienced Member
Posted July 7, 2019
Pro Subscriber
I would assume Air-break circuit breaker since it has the lowest dielectric insulator, and least intrusive arc removal system. Oil and SF6 provide an arc quencing dielectric and the air-blast distinguishes the arc between the main line contacts quickly. Air-break circuit breaker just breaks the main line contacts and draws the arc away on the arc chutes, and is the only breaker listed used at 480V or less in the modern era.Originally Posted by nwilliams
Junior Member
Posted January 31, 2020
I put tank type oil circuit breaker. Does anyone have the answer for this?
Experienced Member
Posted February 2, 2020
Pro Subscriber
Found this question in the following quiz:
http://www.electricalquizzes.com/cir...reakers-mcqs-2
17. Which of the following circuit breaker can be installed on 400 kV line
(A) Tank type oil circuit breaker
(B) Miniature circuit breaker
(C) Vacuum circuit breaker
(D) Air blast circuit breaker.
Answer is D
Junior Member
Posted February 2, 2020
That would of been my guess. Thank you
Member
Posted February 12, 2021
