Yirong circuit breaker auxiliary switch is an essential accessory for high-voltage vacuum circuit breakers and switchgear equipment. We use high-quality internal components and a compact structure for this switch. It runs smoothly, maintains stable contact and delivers consistent performance with a long service life. It holds up well during continuous long-hour operation and resists wear and tear. This lets you cut down daily maintenance work and reduce your equipment operating expenses effectively.
This auxiliary switch works with most indoor and outdoor circuit breakers and complete switchgear sets. It suits many of your project scenarios, such as distribution rooms, industrial parks, urban power grids, building electrical systems and substation supporting facilities. It provides precise real-time signal feedback to keep your whole power system running safely and coordinately.
We focus on the development and production of auxiliary switches and support custom solutions to fit your unique project requirements. Every product goes through strict full-process quality checks to ensure stable field performance. We offer various standard specifications, so you can easily match different equipment models and adapt to diverse installation conditions, solving your equipment matching issues with ease.As a direct manufacturer, we have a mature supply chain, stable production capability and trustworthy after-sales support. We deliver cost-effective electrical accessories to global distributors and project buyers. You can enjoy stable product quality, lower procurement costs and better market competitiveness for your business.
Types of Circuit Breaker Auxiliary Switch
High-precision Action & Reliable Signal Transmission
Our auxiliary switch is built with precise mechanical structures and responsive contacts. It keeps perfect, instant synchronization with your main circuit breaker during opening and closing operations. It sends stable, precise signals to your control system, showing the breaker’s real-time working status clearly. Featuring ultra-low contact resistance, it eliminates signal loss and incorrect feedback. This lets you keep your entire distribution control system running safely and stably, and effectively prevents unexpected equipment failures.
Wide Compatibility & Easy On-site Installation
Built with standard structures and universal interfaces, our auxiliary switch works well with all types of indoor, outdoor, medium and high voltage circuit breakers. Its modular, detachable design makes installation simple and straightforward, with no complex debugging required. The compact structure saves your installation space greatly. You can complete on-site assembly, part replacement and equipment upgrades with minimal effort, which effectively boosts your maintenance efficiency and cuts your labor costs.
If your auxiliary switch contacts get stuck and fail to open, power off the equipment immediately and halt all operation. We advise replacing the whole auxiliary switch, rather than repairing only the faulty contacts. Simple partial fixes tend to cause recurring faults.
You also need to test the secondary circuit current to rule out overcurrent risks. Clean up all wiring in the secondary circuit to remove oil stains and grime, and keep the contacts free from contamination.
Auxiliary switch overheating, smoking or burning damage is mainly caused by secondary circuit short circuits or overloads. It also happens if you select an unsuitable switch model that does not match the breaker’s rated current and voltage. Besides, stuck contacts that stay closed for a long time will keep the circuit conducting and trigger overheating or burnout.
Once the issue occurs, cut off the power supply and stop using the equipment right away. Replace the old unit with a new auxiliary switch that perfectly matches your circuit breaker’s technical parameters. Inspect the entire secondary circuit thoroughly to eliminate hidden short circuit and overload dangers.
Simple daily maintenance can effectively extend the service life and stabilize the performance of auxiliary switches. Follow these three key routines:
First, carry out routine inspections every 6 to 12 months. Check the status of contacts, transmission parts and wiring, and clean up dust and dirt on the switch surface.
Second, lubricate linkage rods and movable parts on a regular basis. Good lubrication prevents rust, stiffness and mechanical jamming during operation.
Third, calibrate the linkage angle between the auxiliary switch and main circuit breaker regularly. This guarantees accurate signal transmission. Always double-check to ensure the switch model is fully compatible with your breaker device.
