LYB203–LYB207 Series 630A-650A VCB Contact Arm – Composite Insulation Moving Contact for High-Voltage Circuit Breaker

The LYB203–LYB207 series is a premium line of 630A to 650A contact arms engineered for high-voltage vacuum circuit breakers (VCB) and switchgear systems. This series features advanced composite insulation technology, utilizing high-performance insulating sleeves (available in silicone rubber or specialized polymer) to provide superior dielectric strength and support for the internal conductive conductor. Designed for high-current environments, these moving contacts ensure stable power transmission and exceptional thermal resistance. Each assembly is precision-crafted with silver-plated copper components for minimal electrical resistance and maximum operational reliability in critical power distribution infrastructure.