Question
Download Solution PDFThe highest rating of Triple pole with Neutral (TPN) MCB main switches available in the local market is _______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFA triple pole with a Neutral (TPN) Miniature Circuit Breaker:
- It is used to protect the circuits from short circuit faults. It is used in the place of the fuse.
- When the amount of electricity is increasing in wire, the MCB turns off and the result is it breaks the circuit.
- It prevents from burning of home appliances.
- The current rating of single-pole Triple pole with Neutral (TPN) MCB main switches available in the local market is 63 A.
Additional Information
A miniature circuit breaker (MCB):
- It automatically switches off the power supply during overload and faults.
- This function of automatic switching is accomplished by a bimetallic strip.
- Whenever continuous overcurrent flows through MCB, the bimetallic strip is heated and deflects by bending.
- This deflection of the bimetallic strip releases a mechanical latch.
- As this mechanical latch is attached to the operating mechanism, it causes to open the miniature circuit breaker contacts, and the MCB turns off thereby stopping the current to flow in the circuit.
Last updated on May 29, 2025
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