A Vacuum Circuit Breaker (VCB) is a type of circuit breaker where the arc quenching takes place in a vacuum. It is widely used for medium-voltage applications due to its high reliability, long service life, and minimal maintenance requirements. When the contacts within the breaker separate, the vacuum environment ensures that the arc is quickly extinguished, making VCBs highly efficient and safe.

• Cleaning of Vacuum Circuit breaker with CRC-226.
• Removal of old grease and re-greasing the same with recommended grease.
• Check condition of SIC contact.
• Checking Condition and alignment of jaw Contact.
• Checking and proper tightening of hardware.
• Checking proper closing of all poles together.
• Checking of breaker tripping through push button.
• Checking and adjusting gap between hylum sheet and side plate.
• Checking motor operation in case of EDO.
• Checking of auxiliary contact continuity proper change over.
• Checking presence of all circlips.
• Checking IR between phase-phase (VCB in closed condition).
• Checking IR between phase-earth (VCB in closed condition).
• Checking IR between phase-earth (VCB in open condition).
• Any faculty spare replaced by new one, which will be charged extra.