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Siemens 3RH2911-1FA04 Front Auxiliary Switch - 4 NC

Siemens 3RH2911-1FA04 Front Auxiliary Switch (4 NC).

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ManufacturerSiemens

Part number3RH2911-1FA04

Type Auxiliary Switch

Mounting Front

Number of NC Contacts 4

Terminal Type Screw

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4 Normally Closed Contacts Front Mounting Screw Terminals For 3RT2/3RH2 High Reliability Easy Installation

Product description

The Siemens 3RH2911-1FA04 is a front-mounting auxiliary switch designed to expand the functionality of Siemens 3RT2 contactors and 3RH2 contactor relays. This module features 4 normally closed (NC) contacts, utilizing screw terminals for connection. The current paths are configured as four individual 1 NC circuits.

This auxiliary switch is crucial for adding supplementary control and signaling functions to existing contactor and relay assemblies. It is commonly used for status feedback, interlocking circuits, and fault signaling in automation and control panels.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RH2911-1FA04. Get quality surplus components with fast shipping to ensure your automation systems stay online and efficient.

Technical specifications

Type	Auxiliary Switch
Mounting	Front
Number of NC Contacts	4
Terminal Type	Screw
Compatible With	3RT2, 3RH2
Current Path	4 x 1 NC

Common applications

Control Panel Wiring

Automation Feedback

Interlocking Circuits

Status Signaling

Relay Logic Extension

Machine Safety

Compatible systems

Siemens SIRIUS 3RT2 Contactors Siemens SIRIUS 3RH2 Contactor Relays Industrial Control Panels

Also known as

Siemens 3RH2911-1FA04 Switch 3RH29111FA04 Siemens 4 NC Auxiliary Contact

Replaces / compatible with

This auxiliary switch module is designed to add NC contacts to Siemens 3RT2 contactors and 3RH2 contactor relays, expanding their control capabilities. It is compatible with the entire range of 3RT2 and 3RH2 devices.

Technical note

Expert tip

The terminals are clearly marked with .1/.2 for each of the 4 NC circuits, simplifying wiring for complex interlocking and feedback applications.

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Frequently asked questions

How many circuits does the Siemens 3RH2911-1FA04 provide?

The Siemens 3RH2911-1FA04 provides 4 normally closed (NC) circuits. Each of these NC contacts can be wired independently for various control and signaling functions.