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

19 in stock

Manufacturer: Siemens
Product No.: 7SJ5311-4EA02-1AA0/FF
Country of origin: Germany
Product Type: Numerical Protection Relay
Condition: Brand New
Payment: T/T, Western Union
Weight: 1.429 kg
Dimensions: 26.00 cm x 33.00 cm x 9.50 cm
Shipping port: Xiamen
Warranty: 12 months

Description
Reviews
Shipping & Payment

Overview

The Siemens 7SJ5311-4EA02-1AA0/FF is a numerical protection relay from the SIPROTEC 7SJ531 series. It is specifically designed for protecting motors and power lines in industrial power distribution systems. With fast processing, advanced protection functions, and strong communication capabilities, it ensures both operational safety and system stability.

Technical Specifications

Monitoring Functions

Measured Values: Current, voltage, power, and frequency
Energy Metering: Active and reactive energy tracking
Diagnostics: Fault recording and event protocol logging

Communication Interfaces

SCADA Support: IEC 870-5-103 protocol
PC Connection: DIGSI software for configuration and diagnostics

Hardware Details

Auxiliary Voltage Options: 24/48/60/110/125/220/250 V DC
Analog Inputs: 5 current transformer inputs, 3 voltage transformer inputs
Digital I/O: 11 binary inputs, 5 alarm relays, 4 command relays

Environmental Conditions

Operating Temperature: -25°C to +60°C
Storage Temperature: -40°C to +70°C
Protection Class: IP20

Design and Performance

Modular Construction: Enables hardware/software expansion
Fast Processing: Supports complex protection logic and rapid response

Payment: T/T, Western Union.

Shipping port: Xiamen.

Lead time: Typically 1–3 working days after payment confirmation (subject to stock).

Worldwide delivery: We ship industrial automation parts to customers around the world. Freight is quoted with your RFQ.

F.A.Q.

Common questions about quotes, shipping, warranty and returns

Click Request a Quote on the product page and send us the part number, required quantity, and destination country. Our sales team will reply with current availability, pricing, and estimated delivery time.

In-stock items are normally prepared after payment and order confirmation. Most orders are dispatched from our warehouse in China, although the shipping location may vary depending on current stock.

Yes. We ship industrial automation parts to customers worldwide. Shipping cost and transit time depend on the destination, package weight, product size, and local import requirements.

We commonly use DHL, FedEx, UPS, and other international courier services. The carrier can be selected according to the destination, delivery speed, shipment size, and customer requirements.

Our products are generally covered by a 12-month warranty. Eligible products may also be returned under our 30-day refund policy. Please contact our team before returning any item to confirm the applicable terms and return instructions.