Siemens 7SJ5311-4EA02-1AA0/FF Numerical Protection Relay

Description

The Siemens 7SJ5311-4EA02-1AA0/FF is a SIPROTEC 7SJ531 series numerical protection relay designed for motor and feeder protection. It delivers fast fault detection, precise monitoring, and robust communication for industrial power systems.

Specifications

• Model: 7SJ5311-4EA02-1AA0/FF

• Series: SIPROTEC 7SJ531

• Manufacturer: Siemens

• Protection Functions: Overcurrent, short-circuit, earth fault, motor protection

• Measured Values: Current, voltage, power, frequency

• Energy Metering: Tracks active and reactive energy

• Communication Protocols: IEC 61850, MODBUS, DNP3

• Display: LCD with status indicators

• Power Supply: 24–250 VDC / 80–230 VAC

• Dimensions: 26.00 cm × 33.00 cm × 9.50 cm

• Weight: 3.15 lbs

• Certifications: CE, RoHS

• Country of Origin: Germany

Features

• Advanced Protection Algorithms: Detects faults rapidly to minimize equipment damage

• Multi-Protocol Communication: Integrates easily into modern substation networks

• User-Friendly Interface: LCD display and keypad simplify configuration and diagnostics

• Flexible Application: Suitable for motors, feeders, and distribution systems

• Event Logging: Stores fault records and operational data for analysis

• Modular Design: Supports expansion and customization based on system needs

• High Reliability: Built for continuous operation in demanding industrial environments