Siemens 3RH2911-2HA11 690V Terminal Block, Auxiliary Switch, Normally Open, Normally Closed | AmpState

Meet the Siemens 3RH2911-2HA11: a rugged terminal block built for dependable wire termination and distribution inside electrical enclosures. This unit combines a 690V terminal block with an integrated auxiliary switch that provides both normally open (NO) and normally closed (NC) contact configurations, delivering simple status indication and control signaling in a compact, single device.

Designed for replacement projects and spare stocking, this part helps you keep your bill of materials (BOM) aligned with the original specification. By stocking this exact Siemens part, you minimize downtime, simplify maintenance, and preserve proven control logic across your panels and machines.

Key benefits that matter in the field

• Integrated auxiliary switch with NO/NC contacts combines signaling and control in one component, reducing wiring complexity and panel footprint.
• 690V rating makes it suitable for industrial control panels and automation environments where higher voltage handling is essential.
• OEM alignment with part number 3RH2911-2HA11 ensures seamless compatibility with existing equipment and BOMs, streamlining replacements and refurbishments.
• Enclosure-focused design tailored for reliable wire termination and distribution inside control panels, helping tidy terminations and improve long-term reliability.
• Ideal for stocking and replacements to support ongoing maintenance of legacy systems or upgraded installations without re-engineering control logic.

Who benefits from this Siemens terminal block

Panel builders, machine integrators, and maintenance teams working with legacy Siemens controls or new installations that require a proven, high-voltage terminal block with auxiliary signaling will appreciate the value. It’s particularly well-suited for retrofit projects, equipment refurbishments, and anywhere you need to preserve exact part numbers to maintain BOM integrity.

Use cases and practical applications

• Terminating and routing power and control wiring inside electrical enclosures for automated machines.
• Implementing auxiliary signaling in control circuits—use NO for indicating a circuit is closed and NC for monitoring fault or standby states.
• Replacing a degraded terminal block without altering surrounding circuitry or control logic, preserving existing wiring diagrams and troubleshooting steps.

Compatibility and availability

Part Number: 3RH2911-2HA11 • Manufacturer: Siemens • Product Type: Terminal Block • Voltage: 690V. Available from AmpState. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.