Yirong circuit breaker are core high-voltage components designed exclusively for complete switchgear sets. They control and protect high-voltage power circuits, keeping the entire power system running safely in daily operation.
Featuring a practical integrated structure, our circuit breaker come with a well-organized internal layout, reliable insulation and smooth mechanical movement. They maintain stable performance after power off, with low operation noise and a long service life. Easy to maintain, these units work perfectly for long-term continuous power supply scenarios.They are widely used in switch cabinet rooms, industrial distribution centers, municipal power projects, commercial buildings and factory power systems, covering most indoor high-voltage power supply requirements.
We have years of hands-on experience manufacturing vacuum circuit breakers that meet international standards and pass ISO quality certification. All production follows standardized workflows, with strict quality inspections carried out at every stage. Every unit is well calibrated to fit standard switchgear perfectly, delivering stable and reliable performance for long-term operation.
Types of Circuit Breaker
High Compatibility with All Kinds of Switchgear
Our circuit breaker are built to standard switchgear dimensions. With precise sizing and standard interfaces, they fit most drawer-type and fixed-type switch cabinets perfectly. No cabinet modification is required for installation.
This high compatibility greatly simplifies on-site assembly. It stabilizes the overall switchgear system and cuts down time and effort for installation and routine maintenance.
Integrated Protection & Smart System Compatibility
Our circuit breaker come with built-in multi-protection functions against overload, short circuit and under-voltage issues. They respond instantly to faults and secure the whole power distribution system.
Besides, they work well with most mainstream power distribution automation systems, supporting real-time data transmission and remote monitoring. This enables intelligent and manageable switchgear operation, letting you keep track of system status at all times. It effectively improves the safety and working efficiency of your power distribution setup.
Common causes include low control voltage, damaged closing coil, poor contact of auxiliary switch, interlock not released, mechanical sticking or incomplete energy storage. Check the power supply, closing coil, auxiliary switch and mechanical interlock in order to find the fault quickly.
It is usually caused by loose bolts, dirty or oxidized contact surfaces, insufficient contact pressure, or long-term overload operation. Clean the contact area, apply conductive grease, and fasten all bolts with standard torque to solve the overheating issue.
The problem mainly comes from oxidized weak contacts and misaligned linkages. Clean and polish the contact points, then adjust the linkage angle. Replace the auxiliary switch directly if it is badly worn.
