XRNT is generally used to protect transformers, and XRNP is generally used to protect transformers. XRNT’s fusion tubes have relatively large currents, and XRNP’s have small currents such as 0.5A or 1A. The commonly used specifications are different. The size of the fusion tube is also different , The matching seat is also different, the XRNT one is bigger. The fuse tube of XRNP is relatively small.