Answer / baikunth

1. spring may not charged. control supply may missing.
breaker is not at service position.trip is activated or any
external interlock inhibiting the switching.
2. no
3. to save the breaker
4. for human safety.

Answer / shariq sultan

if u provide the drawing i shall guide u definatly. step by step

Answer / muhammadtahir

if u provide me the drawing of the panel i shall guide u in step by step

Answer / selvakumar.k

Spring may problem,phase terminal may burned,phases may short circuited,

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