Siemens SCALANCE X Media Module MM991-4LD Optical
Siemens 6GK5991-4AC00-8AA0 SCALANCE X MM991-4LD Media Module with 4 optical ports.
The Siemens 6GK5991-4AC00-8AA0 is a media module for the SCALANCE X industrial Ethernet switch series. Identified as MM991-4LD, it provides four 100 Mbit/s BFOC ports for single-mode optical fiber connections, supporting distances of up to 26 kilometers. This module is an accessory designed to expand the connectivity options of SCALANCE X switches.
This media module is essential for building robust industrial communication networks, particularly in environments requiring long-distance, high-speed data transmission over optical fiber. Applications include process automation, factory automation, and infrastructure projects where reliable network infrastructure is critical.
Stanlo Automation, a veteran-owned surplus industrial automation parts distributor, offers the Siemens 6GK5991-4AC00-8AA0. We are dedicated to providing quality components and prompt service to keep your industrial networks operational.
| Type | Media Module |
| Series | SCALANCE X |
| Model | MM991-4LD |
| Ports | 4x 100 Mbit/s BFOC |
| Fiber Type | Single-mode Optical |
| Max Distance | 26 km |