Siemens 6GK7277-1AA10-0AA0 Compact Switch Module

The Siemens 6GK7-277-1AA10-0AA0 CSM 1277 is a robust, unmanaged switch that adds three additional Ethernet nodes to an S7-1200 system. It delivers fast 10/100 Mbit/s connections with LED status indicators, making it an ideal solution for space-constrained control cabinets and cost-effective Ethernet expansion.

Technical Specifications

• Model: 6GK7277-1AA10-0AA0 Siemens
• Series: SIMATIC S7-1200
• Product Type: CSM 1277 Compact Switch Module
• Switch Type: Unmanaged Industrial Ethernet Switch
• Number of Ports: 4 × RJ45 (10/100 Mbit/s)
• Supported Topology: Star, Line
• Mounting: S7-1200-compatible rail mount
• Power Supply: External 24 V DC
• LED Diagnostics: Yes (per port status)
• Included: Electronic manual on CD-ROM
• Lifecycle Status: Active

Function & Application

Purpose:
The CSM 1277 enables S7-1200 controllers to expand network capacity by connecting up to 3 additional Industrial Ethernet nodes via a compact, unmanaged switch.

Typical Applications:

• Simple machine-level Ethernet networking
• Small-scale automation and control cabinets
• Expanding Ethernet connectivity in S7-1200 based installations

Recommended Accessories

• 6XV1870-3QE30 – Industrial Ethernet TP Cord, RJ45/RJ45, 0.3 m
• 6XV1870-3QE50 – Industrial Ethernet TP Cord, RJ45/RJ45, 0.5 m
• 6GK1901-1BB50-0AA0 – RJ45 Port Lock with Keys (1 Unit)
• 6XV1812-8A – 2-Wire Energy Cable (Sold per meter)

Delivery & Compliance

• Packaging Dimensions: 25.00 × 210.00 × 290.00 mm
• Net Weight: 0.225 kg
• Packaging Quantity: 1 Piece
• Country of Origin: Germany
• Estimated Dispatch Time: 1 Working Day

Product Compliance & Classification

• RoHS Compliance: Yes
• WEEE Take-Back Obligation: Yes
• SCIP Number: f8141493-945d-4c52-980e-2a7df80f2ea3

REACH Substances:

• Lead (CAS 7439-92-1) > 0.1%
• Lead monoxide (CAS 1317-36-8) > 0.1%
• Commodity Code: 85176200
• Catalog ID: IK
• Product Group: 2415
• Group Code: R322
• Product Class: A – Stock item, returnable
• EAN: 4019169854399
• UPC: 040892607208

Key Features & Benefits

✅ 4-Port Unmanaged Switch. Adds up to 3 additional Ethernet nodes.

✅ DIN Rail Compatible. Fits seamlessly into S7-1200 mounting layouts.

✅ LED Diagnostics. Visual port status and connection monitoring.

✅ Compact Form Factor. Ideal for small cabinets and distributed I/O setups.

✅ Easy Integration. Plug-and-play Ethernet networking for automation systems.

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Need help selecting network accessories, Ethernet cables, or planning distributed S7-1200 topologies?

Contact our Siemens automation experts – we’re here to support your control network expansion.