Product Overview
The Siemens 6GK5408-8GR00-2AM2 (SCALANCE XM408-8C) is a managed modular Industrial Ethernet switch designed for demanding automation networks. It features 8 integrated 10/100/1000 Mbit/s RJ45 ports with securing collars, plus 8 combo ports accepting SFP transceivers (100/1000 Mbit/s). The Siemens 6GK5408-8GR00-2AM2 can be expanded to a maximum of 24 ports (electrical or optical) using extender modules, making it a flexible solution for growing network infrastructures. With integrated Layer 3 IP routing, PROFINET IO device functionality, and comprehensive redundancy protocols, this switch serves as an ideal upgrade path for legacy managed switches.
Technical Specifications
| Parameter |
Value |
| Product type designation |
SCALANCE XM408-8C |
| Transfer rate |
10 Mbit/s, 100 Mbit/s, 1000 Mbit/s |
| Max. number of ports (configurable) |
24 |
| Integrated electrical ports (RJ45) |
8 (with securing collar) |
| Integrated SFP ports |
8 (100/1000 Mbit/s) |
| Combo ports (RJ45 + SFP) |
8 |
| Extender module slots |
2 |
| Supply voltage (DC, rated) |
24 VDC (range 19.2–28.8 V) |
| Power loss (rated) |
48 W |
| Max. current consumption |
2 A |
| PoE budget (optional) |
Up to 30 W per port, 360 W total |
| Ambient temperature (operation) |
-40 to +70 °C |
| Protection class |
IP20 |
| Dimensions (W x H x D) |
140 mm x 147 mm x 125 mm |
| Net weight |
1.15 kg |
| Mounting |
35 mm DIN rail, S7-300/S7-1500 rail |
| MTBF |
28 years |
Industry Applications
The Siemens 6GK5408-8GR00-2AM2 is engineered for mission-critical environments. In manufacturing plants, it provides reliable connectivity for PROFINET IO devices, supporting ring redundancy (HRP, MRP) and fast reconfiguration (50 devices in <0.3 s). For transportation systems, its wide operating temperature range (-40 to +70 °C) and marine certifications (ABS, BV, DNV GL, LRS, NK, PRS, RINA) make it suitable for shipboard networks. The integrated Layer 3 routing (static and dynamic IPv4/IPv6) allows the switch to operate as a router in industrial cell networks, eliminating the need for separate routers.
Compatibility & Integration
This Siemens 6GK5408-8GR00-2AM2 switch supports a broad range of industrial protocols including PROFINET IO (conformity class B), EtherNet/IP, and redundancy protocols (MRP, HRP, RSTP, MSTP). It integrates with Siemens STEP 7 for configuration and diagnostics. The C-PLUG removable storage simplifies device replacement without reconfiguration. For security, it offers IEEE 802.1x, ACLs, SSH/SSL, and multicast filtering. The device is CE marked, RoHS compliant (2011/65/EU), and carries hazardous location approvals (ATEX, CSA, IECEx, CCC Ex).
Selection Guide & Purchasing Advice
When selecting the Siemens 6GK5408-8GR00-2AM2, verify that your power supply delivers 24 VDC (19.2–28.8 V) with at least 2 A capacity. For PoE applications, ensure the power source can supply up to 360 W total. Optional extender modules (e.g., KM408 series) allow expansion to 24 ports. For fiber connectivity, choose SFP transceivers (100 Mbit/s or 1000 Mbit/s) that match your cable type (multimode or single-mode LC). PLC Source PRO offers genuine Siemens parts; contact ubest101 for current availability and competitive pricing.