
High Precision Miniature Circuit Breaker Electrical Circuit Breaker Vacuum Circuit Breaker. Three-Position Integration: Integrates vacuum circuit breaker, disconnector, and earthing switch into one unit for safety and compactness. Vacuum Arc Extinguishing: Uses vacuum technology with solid-sealed pole design for high insulation and environmental adaptability. Modular Spring Mechanism: Features independently replaceable and overhaulable spring energy storage mechanism for easy maintenance. Visible Breakpoint Design: Rotary isolating switch provides visible breakpoints after opening to ensure maintenance safety. Multi-Mode Operation: Supports manual, AC/DC electric operation, and remote control for versatile application scenarios. Safety Interlocking: Mechanical interlocking between switches and cabinet door prevents misoperation and ensures operator safety. High Performance Specs: Rated voltage 12kV, current 630/1250A, breaking current 25-31.5kA, and mechanical life of 10,000 times. Certified Quality: ISO9001-2000, CB, and CCC certified with a 'zero defects' quality management system.