Description - SIPROTEC 7SJ45

Overcurrent protection, CT powered, setting with DIP-switches

The SIPROTEC 7SJ45 is a numerical overcurrent protection relay which is primarily intended as a radial feeder or transformer protection (backup) in electrical networks. It provides definite-time and inverse-time overcurrent protection according to IEC and ANSI standards.

The SIPROTEC 7SJ45 relay does not require auxiliary voltage supply. It imports its power supply from the current transformers.

Product homepage - downloads in the internet (catalogs, certificates, firmware, manuals)

https://www.siemens.com/siprotec4