Cheapest Factory Air circuit breaker-FTW2 for India Manufacturer
Exterior and dimensions
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|Model:||Rated voltage (V)：||Rated insulation voltage/Rated impulse withstand voltage Uimp(KV):||Installation(poles)：||Frame size rated current(A)||Rated current(A)||Rated breaking Capacity(KA)：||Rated short-time withstand current||Operating performance|
|Rated Ultimate Short-Circuit Breaking Capacity||Rated short-circuit breaking capacity||Power on(times)||Power off(times)|
|FTW2-1600||AC400||690/12000||withdrawable type,stationary type(3 poles,4poles)||1600||200,400,630, 800, 1000||55||42||42||10000||5000|
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Thanks to Youtube users Mark Horstmeier and ramosel I now doubt my own explanation in the video. Please read
http://www.physics.princeton.edu/~mcdonald/examples/motor.pdf for a better operational theory.
Ball Bearing Motor
(None of the dimensions is critical. Material doesn’t matter as long as it conducts electricity.)
3 M6 stainless Nuts, 1 M6 stainless Bolt (50mm long) , 2 Ball Bearings (OD: 20mm, ID: 6mm, Width:6mm, seals removed, grease removed with brake cleaner), 2 flexible isolated wires (Diameter 1.5mm, Length 20cm) Wires are soft soldered to outer races of the bearings.
The power supply: Old 12V Battery charger with conventional transformer.
Batteries must not be used (current way too high!!) Modern (eg. computer) power supplies are unlikely to work, as they switch off totally when short circuits are made.
Kids! Don’t do this at home! Danger of burns, fire and electric shock.
Be sure you have a residual-current circuit breaker (RCCB) installed. Never use mains electricity directly.
Here’s an explanation of the thermal theory (which I doubt after reading Kirk T. McDonald’s paper):
Please look at this article which also presents different explanations of how it works: https://en.wikipedia.org/wiki/Ball_bearing_motor