How to mounting VS1 type medium voltage vacuum circuit breaker (VCB), into metal clad switchgear panel with draw-able type KYN28 cubicle:
VCB in testing position, VCB and cubicle door were interlocked;
VCB and Earthing Switch were interlocked;
Earthing switch and cubicle back door were interlocked;
Total five interlocked design for safety.
