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Siemens 6GK5491-2AC00-8AA2 SCALANCE MM491-2LD Fast Ethernet Media Module

6GK5491-2AC00-8AA2
6GK5491-2AC00-8AA2
6GK5491-2AC00-8AA2

Siemens 6GK5491-2AC00-8AA2 SCALANCE MM491-2LD Fast Ethernet Media Module

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SIEMENS · SCALANCE X-400

6GK5491-2AC00-8AA2

SCALANCE MM491-2LD Fast Ethernet Media Module

MANUFACTURERSiemens
MODEL6GK5491-2AC00-8AA2
PART NUMBER6GK5491-2AC00-8AA2
PRODUCT TYPEIndustrial Ethernet Media Module
SYSTEM FAMILYSCALANCE X-400
ORDER SUPPORTModel Verification

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20 Years of Experience in Industrial Automation Supply

AMIKON supplies industrial automation spare parts to maintenance, engineering and procurement teams worldwide. Our focus includes discontinued and hard-to-find DCS, PLC and TSI components, helping customers identify the correct model, source replacement parts and support urgent maintenance requirements.

Discontinued Parts SourcingModel Identification SupportGlobal Customer SupportIn-Stock Supply Support
  • Item NO.:

    6GK5491-2AC00-8AA2
  • Product Origin:

    Germany
  • Brand/Manufature:

    Siemens
  • Product Origin:

    Germany
  • Lead Time:

    IN STOCK
  • Condition:

    Brand New And 100% Original
  • Certificate:

    Coo

Siemens SCALANCE X-400

6GK5491-2AC00-8AA2

Price and Availability Inquiry

The Siemens 6GK5491-2AC00-8AA2 is a SCALANCE X-400 MM491-2LD Fast Ethernet media module for long-distance single-mode fiber connections for industrial automation maintenance, integration and replacement applications.

Sales SupportDirect specialist contact
QuotationCurrent commercial details
DeliveryDHL · FedEx · UPS
Fast quotation support Send the model and required quantity directly to Lisa Lin using the contact options on the right.

Your AMIKON Contact

LL Lisa LinSales Specialist
WhatsApp +86 18965423501
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For faster service, please include the model 6GK5491-2AC00-8AA2 and required quantity in your inquiry.

Siemens 6GK5491-2AC00-8AA2

Technical Specifications

Official Siemens optical-interface, network and compatibility data for the SCALANCE MM491-2LD.

01Product IdentityOfficial Siemens identification
ManufacturerSiemens
Article Number6GK5491-2AC00-8AA2
Product DesignationSCALANCE MM491-2LD Fast Ethernet Media Module
Product FamilySCALANCE X-400
02Optical Interface100BASE-FX transmission data
Ethernet Standard100BASE-FX Fast Ethernet
Optical Ports2 single-mode fiber ports
Wavelength1310 nm
Maximum Cable Length26 km
03Connection & OperationFiber and ring functions
Connector Type2 × 2 BFOC sockets
Transmission Mode100 Mbit/s full duplex
Ring UseBoth optical ports configurable as ring ports
Module HandlingMedia module for modular SCALANCE X-400 switches
04System CompatibilityApproved installation positions
SCALANCE X414-3ESlots 6 and 7
SCALANCE X408-2Slots 5 and 6; product version 04 or later
EM496-4 ExtenderSlots 12 to 15
Mixed OperationSupported with compatible MM491 and MM492 modules

Siemens 6GK5491-2AC00-8AA2 Product Support

Frequently Asked Questions

Product-specific compatibility, application, installation, commissioning and ordering guidance for 6GK5491-2AC00-8AA2.

01

Which fiber type is required for the MM491-2LD?

Use single-mode fiber suitable for the 1310 nm 100BASE-FX interface.

02

How far can an optical segment extend?

The Siemens specification gives a maximum cable length of 26 km under the applicable fiber conditions.

03

Which SCALANCE switches accept this module?

It is intended for supported SCALANCE X414-3E and X408-2 configurations, including specified extender slots.

04

Can both ports be used in a ring?

Yes. Both optical ports can be configured as ring ports.

05

Which connector format must the cable match?

Match the installed fiber assembly to the module’s 2 × 2 BFOC sockets.

06

Which hardware version matters on X408-2?

Use with SCALANCE X408-2 product version 04 or later.

07

Which evidence should accompany an inquiry?

Send the full module number, switch model, slot location, fiber type and label photos.

Order Fulfilment

Payment and Worldwide Delivery

AMIKON coordinates product verification, commercial confirmation, packing and international shipment for industrial automation parts. Each order is handled according to the confirmed model, quantity and delivery destination.

01

Order Confirmation

Model, part number, quantity, availability, lead time and payment terms are confirmed in the formal quotation or proforma invoice.

02

Product Preparation

The item reference is checked before dispatch. Packaging is selected to protect industrial components during international transport.

03

International Shipping

Shipment can be arranged through DHL, FedEx or UPS according to the destination, parcel size and confirmed order requirements.

04

Dispatch and Tracking

Dispatch information and the available tracking reference are shared after the shipment has been collected by the selected carrier.

AMIKON Service Standards

Support at Every Stage of Your Order

Clear assistance from initial product identification through dispatch and after-sales communication.

01
Product IdentificationThe manufacturer, complete model and part-number details are reviewed before quotation.
02
Dedicated Sales ContactLisa Lin provides quotation and order communication through email and WhatsApp.
03
Order DocumentationCommercial, packing and shipment details are supplied according to the confirmed order.
04
After-Sales CommunicationFor support, provide the order reference, product label, fault description and clear photos.
05
Pre-Dispatch VerificationThe product label, model reference, quantity and visible condition are checked against the confirmed order before packing.
06
Global Logistics CoordinationInternational express or freight arrangements are coordinated according to the destination, shipment size and confirmed delivery terms.
Important delivery information

Product availability, dispatch date, freight cost and delivery time depend on the confirmed order and destination. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order. Please contact AMIKON for current commercial and shipping details.

AMIKON Professional Services

Warranty, Sourcing and Global Export Support

With 20 years of experience in industrial automation, AMIKON supplies discontinued and hard-to-find DCS, PLC and TSI spare parts to customers worldwide.

01 · WARRANTY

12-Month Product Warranty

Products supplied by AMIKON include a standard 12-month warranty. Warranty handling is based on the confirmed order, product label, fault information and supporting photos or videos.

02 · SPECIALIST SOURCING

Discontinued and Hard-to-Find Parts

Our sourcing service focuses on industrial automation DCS, PLC and TSI spare parts, including obsolete, discontinued and scarce models required for maintenance and replacement projects.

03 · GLOBAL EXPORT LOGISTICS

One-Stop International Shipping

AMIKON can coordinate domestic export customs procedures and arrange international express or sea freight. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order.

04 · TECHNICAL INFORMATION

Model and Specification Support

We assist customers with model identification, specification review, compatibility checks and Datasheet or manual searches. Support also includes distinguishing earlier and later model versions and checking whether a submitted model reference is complete and correctly written.

05 · PRE-DISPATCH CHECK

Product Verification Before Shipment

The product label, complete model, part number, quantity and visible condition are reviewed against the confirmed order before packing.

06 · INDUSTRIAL PACKAGING

Secure Packing for International Transit

Packaging is selected according to the component type, shipment size and transport method to support safe international handling.

07 · ORDER DOCUMENTATION

Commercial and Shipping Documents

Commercial invoices, packing lists and available origin information can be prepared according to the confirmed order and destination requirements.

08 · AFTER-SALES SUPPORT

Responsive Order Follow-Up

For order support, customers can provide the order reference, product label, issue description and clear photos for review by the AMIKON team.

Need help identifying a spare part?Send the complete manufacturer, model, part number and clear product-label photos to Lisa Lin.

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