0663.050ZRLL

0663.050ZRLL Application Field and Working Principle

The 0663.050ZRLL is used in many types of circuits, including residential circuits. It is primarily an overcurrent protection device, as well as a short circuit protection device. It works by sensing when the current reaches a certain threshold, and then trips the circuit breaker. In a sense, this is the same as a fuse. When the current passes through the 0663.050ZRLL, the fusible element melts and it interrupts the flow of the current.

The 0663.050ZRLL is a Zinc-Oxide Varistor. It is a non-linear variable resistor, which has a high resistance when there is no excessive current. When there is too much current, the resistance goes down but the current is limited by the fusible element. Generally, the fusible element is composed of an alloy which is triggered at a certain temperature.

This protector is especially useful in areas where surges of current are expected. It can effectively protect the circuit from any kind of sudden power surges or lightning strikes. In such cases, the 0663.050ZRLL will rapidly trip the circuit, preventing the circuit from being damaged by the excessive current.

The 0663.050ZRLL is generally available in three different varieties, each with different current ratings. These are the UL1077 Standard, UL1077A, and UL1077B. The UL1077 Standard limits the current to 10,000amperes, while the UL1077A and UL1077B limit the current to 12,000 and 15,000amperes respectively. The UL1077 Standard is most commonly used in residential circuits, as it provides more than enough protection for most residential circuits.

In conclusion, the 0663.050ZRLL is an effective protective device for residential and many other types of circuits. It is composed of a non-linear variable resistor and a fusible element, which limit the current when it exceeds a certain threshold. The UL1077 Standard is suitable for most applications, but higher current ratings are available if needed.