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Siemens 3RH2911-1HA01 Front Mount Auxiliary Switch - 1 NC

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ManufacturerSiemens

Part number3RH2911-1HA01

Contacts 1 NC

Mounting Front

Terminals Screw

Compatibility 3RT2, 3RH2

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CAGE: 9NK75

1 Normally Closed (NC) Contact Front Mounting Screw Terminals Snap-on Installation Compatible with 3RT2 and 3RH2

Product description

The Siemens 3RH2911-1HA01 is a front-mounting auxiliary switch designed to add a single Normally Closed (NC) contact to Siemens SIRIUS 3RT2 contactors and 3RH2 contactor relays. This compact unit features screw terminals for secure electrical connections and is easily snapped onto the front of the compatible devices, making it an efficient solution for expanding control circuit capabilities.

This auxiliary switch is crucial for implementing interlocking functions, status signaling, and other control logic in various industrial automation applications. Its primary function is to provide a reliable NC contact that opens when the main contactor or relay is energized. It is compatible with multiple sizes of 3RT2 contactors (S00 to S3) and 3RH2 contactor relays.

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Technical specifications

Contacts	1 NC
Mounting	Front
Terminals	Screw
Compatibility	3RT2, 3RH2
Current Rating	10A AC-12, 6A AC-15

Common applications

Motor Control

Control Circuits

Interlocking

Status Indication

Automation Systems

Compatible systems

Siemens 3RT2 (S00-S3) Siemens 3RH2

Also known as

Siemens 3RH2911-1HA01 Aux Contact Siemens SIRIUS Auxiliary

Replaces / compatible with

This auxiliary switch is designed for use with Siemens SIRIUS 3RT2 contactors and 3RH2 contactor relays.

Technical note

Expert tip

This auxiliary switch is snap-on mountable to the front of Siemens 3RT2 contactors (sizes S00-S3) and 3RH2 contactor relays for quick and easy integration.

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Frequently asked questions

What type of contact does the Siemens 3RH2911-1HA01 provide?

The Siemens 3RH2911-1HA01 auxiliary switch provides one Normally Closed (NC) contact. This contact opens when the associated contactor or relay is energized, making it suitable for applications requiring a break circuit signal.