How do you work air circuit breaker with air?

Answer 1

circuit breakers are switches that open quickly usually opening with a fault condition

air circuit breakers need a long path to quench the arc

oil filled circuit breakers quench arcs much more effectively and in a smaller space

vacuum breakers have no media for an arc to propagate and are far smaller

fuses generally are filled with silica sand to quench the arc

and higher currents make the arc path much longer

typical AIC

fuses 200,000A

air breakers 15,000A

oil breakers 50,000A

vacuum breakers 100,000A

fuses work once and work correctly and dont fail or weld closed

they are inexpensive and safe

breakers can work tens of times

breakers need rework and recalibration whenever they are reset

breakers have mechanical moving parts tempered springs and require periodic maintenance and testing

Breakers can weld shut with a short

Answer 2

An 'air-blast' circuit breaker is just one of several designs of high-voltage circuit breaker. It uses a blast of air to stretch and snap the arc created when the main contacts part. Air-blast breakers are normally outdoor breakers and, in the UK at least, are used in circuits of 33 kV and above.