Siemens SIPROTEC 7SJ6105-5EB92-3FA0-Z/EE

The 7SJ6105-5EB92-3FA0-Z/EE is a SIPROTEC 4 7SJ61 multifunctional numerical overcurrent protection relay for feeders and motor protection. This 7SJ6105 supports phase overcurrent, earth fault, thermal overload, locked rotor, negative sequence overcurrent and load jam protection, covering ANSI 50, 50N, 51, 51N, 49, 51M elements. The suffix Z/EE defines custom option package and hardware revision for this specific variant.

This relay accepts wide-range AC/DC auxiliary supply, equipped with configurable binary inputs and relay trip outputs. It supports definite-time and inverse-time IEC/ANSI characteristic curves, single-shot or multi-shot auto-reclosing, fault event logging and disturbance waveform recording. It uses RS485 interface with IEC 60870-5-103 protocol for SCADA and bay control system communication. Local LCD keypad enables on-site parameter checking and status viewing; configuration and commissioning are completed via DIGSI 4 software. It features front LED status indicators for run, trip and fault diagnosis.

The 7SJ6105-5EB92-3FA0-Z/EE is widely used in medium voltage distribution feeders, pump and fan motor backup protection in power plants, industrial substations and mining systems. The classic SIPROTEC 4 7SJ61 series is discontinued by Siemens, replaced by SIPROTEC 5 7SJ80 series. Most available units are tested surplus spare parts for legacy protection cabinet overhaul and emergency relay replacement. Full order code matching is mandatory to guarantee I/O, supply voltage and firmware compatibility.