Siemens

Siemens SCALANCE 6GK5991-4AC00-8AA0 Accessories

SKU 6GK5991-4AC00-8AA0

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Siemens

  • Product No.: 6GK5991-4AC00-8AA0

  • Country of origin:Germany

  • Product Type: Accessories

  • Barcode: 85176200

  • Payment: T/T, Western Union

  • Weight: 500g

  • Dimensions: 12.03cm x 27.55cm x 2.23cm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The 6GK5991-4AC00-8AA0 is a media module designed for integration into SCALANCE X industrial network switches. Manufactured by Siemens, this accessory module features four 100 Mbit/s BFOC optical ports supporting single-mode fiber optic transmission over distances of up to 26 km, facilitating reliable high-speed data communication across distributed industrial automation networks.

The 6GK5991-4AC00-8AA0 is engineered to expand network connectivity while maintaining robust performance in demanding industrial environments. The unit features physical dimensions of 12.03 x 27.55 x 2.23 cm and an operating weight of 0.50 kg. As an active lifecycle product, it supports ongoing network expansion, long-distance data transmission, and flexible system configuration for modern industrial control architectures.

Features

  • Media module design for SCALANCE X switch infrastructure
  • Four 100 Mbit/s BFOC optical ports for fiber optic connectivity
  • Single-mode optical transmission support up to a maximum of 26 km
  • Robust physical construction optimized for industrial network racks
  • Active product lifecycle status ensuring ongoing component availability

Applications

  • Long-distance industrial Ethernet network backbones
  • Distributed control system (DCS) communication linking
  • Factory automation and plant-wide network expansion
  • SCALANCE X switch optical port configuration

Technical Specifications

Technical Parameter Specification
Manufacturer Siemens
Brand Siemens
Range SCALANCE
Type of product Accessories
Product Phase Active
Module Type Media module MM991-4LD
Port Configuration 4 x 100 Mbit/s BFOC ports, optical
Fiber Type Single-mode optical
Max. Transmission Distance Up to 26 km
Dimensions 12.03 x 27.55 x 2.23 cm
Weight 0.50 kg
Commodity Code 85176200
Export Control Regulations (ECCN) N

Installation Guidelines

  • Ensure the power to the SCALANCE X switch is turned off before inserting or removing the 6GK5991-4AC00-8AA0 media module.
  • Align the module carefully with the designated slot on the switch chassis and insert it smoothly until fully seated.
  • Secure any retaining screws or locking levers to prevent displacement caused by industrial vibration.
  • Connect single-mode optical fiber cables to the BFOC ports, ensuring proper alignment and cleanliness of optical connectors to maintain signal integrity.

FAQ

What is the primary function of the 6GK5991-4AC00-8AA0 module?

It functions as a SCALANCE X media module providing optical port expansion for industrial Ethernet switches.

How many ports and what type of interface does this media module provide?

It provides 4 optical 100 Mbit/s BFOC ports supporting single-mode fiber.

What is the maximum optical transmission distance supported by this module?

It supports single-mode optical transmission up to a maximum of 26 km.

What are the physical dimensions and weight of the unit?

The physical dimensions are 12.03 x 27.55 x 2.23 cm with an operating weight of 0.50 kg.

View all FAQs →

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Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern
Green
Country of origin
Germany
Power source
DC Power

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