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Siemens 3RH2911-1GA22 Front Auxiliary Switch - 2 NO + 2 NC

Siemens 3RH2911-1GA22 front auxiliary switch with 2 NO + 2 NC contacts.

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ManufacturerSiemens

Part number3RH2911-1GA22

Mounting Front

Contacts 2 NO, 2 NC

Terminals Screw

Coding Physical

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Front mounting 2 NO + 2 NC contacts Screw terminal connections Physically coded for compatibility For 3RH2140/3RH2440 contactor relays

Product description

The Siemens 3RH2911-1GA22 is a front-mounting auxiliary switch designed for Siemens contactor relays 3RH2140 and 3RH2440. This unit offers a balanced configuration of two normally open (NO) contacts (terminals 53/54, 83/84) and two normally closed (NC) contacts (terminals 61/62, 71/72). It features screw terminals for robust connections and is physically coded for specific applications.

This auxiliary switch is versatile for applications requiring both signaling (NO contacts) and circuit interruption (NC contacts) in a single unit. It is widely used in industrial control systems, safety interlocking, and automation solutions where precise state monitoring and control are necessary.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, provides the Siemens 3RH2911-1GA22. We are committed to offering quality components to keep your systems running efficiently.

Technical specifications

Mounting	Front
Contacts	2 NO, 2 NC
Terminals	Screw
Coding	Physical
For	3RH2140, 3RH2440
Series	3RH29

Common applications

Control logic

Safety circuits

Interlocking

Industrial automation

Status signaling

Compatible systems

Siemens 3RH2140 Contactor Relays Siemens 3RH2440 Contactor Relays

Also known as

Siemens 3RH29111GA22 Siemens 2 NO 2 NC auxiliary contact

Replaces / compatible with

This auxiliary switch is designed for combination with Siemens 3RH2140 and 3RH2440 contactor relays, offering a balanced set of NO and NC contacts.

Technical note

Expert tip

The physical coding of the 3RH2911-1GA22 ensures proper alignment and connection when mounted to the Siemens 3RH2140 or 3RH2440 contactor relays.

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Frequently asked questions

How are the contacts arranged on the Siemens 3RH2911-1GA22 auxiliary switch?

The Siemens 3RH2911-1GA22 has two normally open (NO) contacts on terminals 53/54 and 83/84, and two normally closed (NC) contacts on terminals 61/62 and 71/72.