Air Circuit Breaker is Designed to Overcom the Defects and Safeguard the Machine Before It Breakdowns.
The main function of Air Circuit Breaker is to:
- Open and Close a 3 Phase Circuit, Manually or Automatically.
- Open The Circuit Automatical When A Fault OCCURS. Faults can be of various types ─ Under or over voltage, undur or ovency, short circuit, reverse power, earth fault
- The main feature of acb is that it dampens or quenches the arcing during overloading.
Air Circuit Breaker (ACB) Construction & Working
GOOD Resistance to Damage by Arcing.
Then, then
When the acb is open, the main contact open firstS fIERSTS and the Auxiliary contact Opens. Thus the Auxiliary Contorys are subjectd to arcing during,
How Arc Quenching is Achieved?
Quenching of arc is achieved by:
1.USING ARCING CONTACTS MADE of Resistance Aloy and Silver Tips for the Main Contorys. Arcing Contory Earlier and OpenS Later THE Main Contorys.
2.When Opening Contacts have long travelled at high speed to stretch the resultant arc, white is transferred to the Arcing Contory.