Siemens 3RH1911-1NM31-0MC0 Auxiliary Switch Block, Front Mount, 3 NO + 1 NC, Solid-State Compatible Original Brand New

Siemens 3RH1911-1NM31-0MC0 Front-Mounted Auxiliary Switch Block

The Siemens 3RH1911-1NM31-0MC0 is a high-performance, front-mounted auxiliary switch block designed for integration with compatible Siemens contactors, specifically the 3RT101 series. This essential control component provides an immediate expansion of the contactor's signal paths, featuring a robust configuration of 3 NO (Normally Open) and 1 NC (Normally Closed) auxiliary contacts. A key feature is the inclusion of one NO contact (terminals 53/54) that is solid-state compatible, ensuring reliable switching in low-current electronic circuits, often found in PLC or sensitive logic applications.

Key Product Detail

• Product Number: 3RH1911-1NM31-0MC0
• Manufacturer: Siemens
• Mounting Position: Front (Snap-on)
• Contact Configuration: 3 NO + 1 NC
• Special Feature: 1 NO contact is Solid-State Compatible
• Terminal Type: Screw Terminal
• Applicable Contactor Series: For 3RT101..-.K...-0LA0 power contactors
• Terminal Identification: 53/54, 61/62, 73/74, 83/84

Function and Application

This auxiliary switch block is used to provide feedback and control signals in automated industrial environments. When the main contactor (e.g., 3RT101) operates, the auxiliary contacts immediately change state, allowing for:

• Status Indication: Signalling the contactor's ON/OFF status to a PLC, control panel, or remote system.
• Interlocking: Creating safety circuits by ensuring specific conditions are met before another device can operate.
• Control Circuitry: Expanding the control logic of the application without adding a separate control relay.

The inclusion of the solid-state compatible NO contact (terminals 53/54, specifically rated for low currents) makes the 3RH1911-1NM31-0MC0 ideal for modern, highly sensitive control systems.

Benefit

1. Enhanced Reliability: Solid-state compatibility ensures reliable switching for low-current circuits (PLCs, electronics), preventing contact welding or switching failures typical of standard contacts in such applications.
2. Space and Cost Efficiency: Front-mounting design allows for quick installation/removal and saves valuable panel space compared to side-mounted or separate components.
3. Broad Compatibility: Specifically engineered for seamless integration with the Siemens 3RT101 contactor family.
4. Robust Connection: Secure screw terminals simplify wiring and provide a strong, vibration-resistant connection for all four auxiliary contacts.
5. Simplified Maintenance: Easy front access allows for straightforward checking and replacement.

For more of our products, including the full range of Siemens SIRIUS industrial controls and contactor accessories, visit Turll today and optimize your automation system!