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Siemens 3RH2911-1HA11 Auxiliary Switch for Contactors

Siemens 3RH2911-1HA11 Front-mounted Auxiliary Switch (1 NO + 1 NC).

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ManufacturerSiemens

Part number3RH2911-1HA11

Type Auxiliary Switch

Mounting Front

Contacts 1 NO + 1 NC

Terminal Type Screw

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Front-mounted Installation 1 Normally Open Contact 1 Normally Closed Contact Screw Terminal Connections For 3RT2 & 3RH2 Expands Contactor Functionality

Product description

The Siemens 3RH2911-1HA11 is a front-mounted auxiliary switch featuring 1 Normally Open (NO) and 1 Normally Closed (NC) contact. It utilizes screw terminals for connection and is designed for use with Siemens 3RT2 contactors and 3RH2 contactor relays. The current path configuration is 1 NC and 1 NO.

This auxiliary switch is essential for expanding the functionality of Siemens contactors and relays, enabling additional control and signaling capabilities. It is commonly used in motor control circuits, automation systems, and safety interlocks where additional feedback or control points are required.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 3RH2911-1HA11. Secure reliable control components from Stanlo Automation, your trusted source for quality surplus industrial parts.

Technical specifications

Type	Auxiliary Switch
Mounting	Front
Contacts	1 NO + 1 NC
Terminal Type	Screw
For	3RT2 Contactors, 3RH2 Relays
Current Path	1 NC, 1 NO

Common applications

Motor Control Circuits

Automation Systems

Industrial Control Panels

Safety Interlocks

Signaling

Feedback Circuits

Compatible systems

Siemens 3RT2 Contactors Siemens 3RH2 Contactor Relays

Also known as

Siemens 3RH2911 Auxiliary 1 NO 1 NC Aux Switch Siemens Contactor Accessory

Replaces / compatible with

This auxiliary switch is designed to be mounted onto Siemens 3RT2 contactors and 3RH2 contactor relays. It extends the contact configuration capabilities of these devices.

Technical note

Expert tip

Ensure the correct polarity and terminal assignment are followed when wiring the auxiliary contacts to prevent operational errors or damage.

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Frequently asked questions

What types of contacts does the Siemens 3RH2911-1HA11 auxiliary switch provide?

The Siemens 3RH2911-1HA11 auxiliary switch provides one Normally Open (NO) contact and one Normally Closed (NC) contact. This configuration allows for a variety of control and signaling applications when used with compatible Siemens contactors and relays.