2060.0043.11 Circuit Protection

Fuses

The 2060.0043.11 is a type of fast-acting fuse, a unit designed to protect an electrical circuit from excessive current. A medium-voltage, flush-mounted fuse, the 2060.0043.11 is unique in both its application field and working principle.

Application Field

The 2060.0043.11 is suitable for outdoor, low-voltage applications in three distinct power systems: low-voltage (LV) main, low-voltage secondary distribution, and medium-voltage (MV) distribution. In all power systems, the 2060.0043.11 is designed to provide a level of protection against both over-currents and short-circuits. This saves the cost of replacing associated equipment, reduces the likelihood of serious fire hazards, and helps to maintain a safe operating environment.

Working Principle

The fuse serves as an overcurrent protection device by using its predetermined melting current to trigger an electrical opening action. This cuts off the circuit, protecting the associated load from any further overcurrents or short circuits. It uses a thermal expansion mechanism and a pinion disk apparatus to trip the fuse quickly when the current exceeds its predetermined value. This enables fast operation, with a full trip response time of up to 200 ms.

To ensure that the 2060.0043.11 provides the necessary fast-acting protection, two tripping mechanisms are provided. The first is the normal trip mechanism, which trips the fuse when its predetermined current value is exceeded. The second is a delayed trip, which trips the fuse an additional 8–9 s after the current value is exceeded.

In addition to providing overcurrent and short-circuit protection, the 2060.0043.11 also includes an antipleakage feature. This feature ensures that any leakage current that occurs as a result of a short-circuit event is limited to ensure that the associated load remains safely disconnected.

Conclusion

The 2060.0043.11 fuse is a unique unit that provides fast-acting, reliable protection for LV and MV power systems. Its medium-voltage, flush-mounted design and two tripping mechanisms ensure quick response times that help protect equipment, reduce the chance of fires, and ensure a safe operating environment.