ABB XDD501A101是一种断路器，具体信息如下：

它的全称是“abb小型断路器3p-63a”，可以应用于多种场合，如住宅、商业和工业等。它是一种空气断路器，由空气进行灭弧，采用模块化设计，可以进行现场安装或远程安装。它具有过载保护、短路保护和过电压保护等功能，可以防止电流过大导致电路损坏或引发火灾等危险。

此外，它还具有多种规格可选，可以根据实际需求选择不同的规格，以满足不同的使用需求。

总的来说，ABB 21-6NG63A是一种高效、安全、可靠的断路器，可以满足不同用户的需求。

It is a circuit breaker, with specific information as follows:

Its full name is "ABB miniature circuit breaker 3p-63a", which can be applied in various occasions, such as residential, commercial, and industrial applications. It is an air circuit breaker that uses air for arc extinguishing and adopts a modular design, which can be installed on-site or remotely. It has functions such as overload protection, short circuit protection, and overvoltage protection, which can prevent circuit damage or fire hazards caused by excessive current.

In addition, it also has multiple specifications to choose from, and different specifications can be selected according to actual needs to meet different usage needs.

Overall, ABB 21-6NG63A is an efficient, safe, and reliable circuit breaker that can meet the needs of different users.