LYB217–LYB221 1250A VD4 VCB Contact Arm – Vulcanized Rubber Insulated Moving Contact for Vacuum Circuit Breakers

The LYB217–LYB221 series are high-performance 1250A contact arms specifically engineered for VD4 vacuum circuit breakers (VCBs) and high-voltage switchgear. These critical components are responsible for making and breaking electrical contacts during current flow, ensuring the reliability and safety of the circuit breaker. This series features advanced vulcanized rubber insulation, which enhances the mechanical and electrical properties of the contact arm to withstand frequent disconnection operations. Each unit is precision-crafted with a conductive core and a durable insulating sleeve, providing superior dielectric strength and thermal stability in demanding power distribution environments.