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Siemens 3RH2911-1HA22 Front Auxiliary Switch - 2 NC + 2 NO

Siemens 3RH2911-1HA22 Front Auxiliary Switch (2 NC + 2 NO).

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ManufacturerSiemens

Part number3RH2911-1HA22

Type Auxiliary Switch

Mounting Front

Number of NC Contacts 2

Number of NO Contacts 2

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CAGE: 9NK75

2 Normally Closed, 2 Normally Open Contacts Front Mounting Screw Terminals For 3RT2/3RH2 Versatile Switching Reliable Performance

Product description

The Siemens 3RH2911-1HA22 is a front-mounting auxiliary switch module for Siemens 3RT2 contactors and 3RH2 contactor relays. This module provides 2 normally closed (NC) and 2 normally open (NO) contacts, using screw terminals for connection. The current path is specified as 1 NC, 1 NC, 1 NO, 1 NO.

This versatile auxiliary switch is employed in automation systems to provide flexible control and feedback signals. It's ideal for applications requiring separate monitoring of circuit states, interlocking mechanisms, or additional control logic for machinery and processes.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 3RH2911-1HA22. Rely on us for quality surplus components and fast shipping to keep your automation projects on track.

Technical specifications

Type	Auxiliary Switch
Mounting	Front
Number of NC Contacts	2
Number of NO Contacts	2
Terminal Type	Screw
Compatible With	3RT2, 3RH2
Current Path	1 NC, 1 NC, 1 NO, 1 NO

Common applications

Automation Control

Interlocking Circuits

Status Feedback

Control Panel Wiring

Machine Safety

Relay Logic

Process Monitoring

Compatible systems

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

Also known as

Siemens 3RH2911-1HA22 Switch 3RH29111HA22 Siemens 2NC2NO Auxiliary Contact

Replaces / compatible with

This auxiliary switch offers a balanced configuration of NC and NO contacts for Siemens 3RT2 contactors and 3RH2 contactor relays, enhancing control and signaling capabilities. It integrates seamlessly with existing 3RT2 and 3RH2 units.

Technical note

Expert tip

The specific terminal assignment of .1/.2 for NC and .3/.4 for NO on the 3RH2911-1HA22 allows for straightforward wiring of safety interlocks and status indications.

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Frequently asked questions

What is the contact arrangement of the Siemens 3RH2911-1HA22?

The Siemens 3RH2911-1HA22 features 2 normally closed (NC) and 2 normally open (NO) contacts. The terminal designations for these are .1/.2 for the NC contacts and .3/.4 for the NO contacts, providing a current path of 1 NC, 1 NC, 1 NO, 1 NO.