Engineered for high-fault industrial sites, this switchgear with short circuit rating utilizes double 120 × 10 mm copper busbars per phase, silver-plated and bolted with Belleville washers to maintain clamping force during thermal cycling. The assembly passed 100 kA/1 s and 65 kA/3 s type tests per IEC 61439-1/2 and UL 1558.