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Siemens 3RH2911-1HA10 Front Mount Auxiliary Switch - 1 NO

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ManufacturerSiemens

Part number3RH2911-1HA10

Contacts 1 NO

Mounting Front

Terminals Screw

Compatibility 3RT2, 3RH2

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CAGE: 9NK75

1 Normally Open (NO) Contact Front Mounting Screw Terminals Snap-on Installation Compatible with 3RT2 and 3RH2

Product description

The Siemens 3RH2911-1HA10 is a front-mounting auxiliary switch designed to add one Normally Open (NO) contact to Siemens SIRIUS 3RT2 contactors and 3RH2 contactor relays. Equipped with screw terminals for reliable connections, this unit easily snaps onto the front of compatible devices, providing essential signaling capabilities for control circuits.

This auxiliary switch is vital for expanding the functionality of contactors and relays, enabling functions such as remote indication or basic interlocking. The single NO contact closes when the main contactor or relay is energized. It is designed for compatibility with Siemens 3RT2 contactors across sizes S00 to S3, as well as 3RH2 contactor relays.

Stanlo Automation, a veteran-owned supplier of industrial automation surplus, offers the Siemens 3RH2911-1HA10 auxiliary switch. We pride ourselves on providing quality components and excellent service to ensure your automation projects are successful and cost-effective.

Technical specifications

Contacts	1 NO
Mounting	Front
Terminals	Screw
Compatibility	3RT2, 3RH2
Current Rating	10A AC-12, 6A AC-15

Common applications

Motor Control

Control Circuits

Signaling

Automation Systems

Interlocking

Compatible systems

Siemens 3RT2 (S00-S3) Siemens 3RH2

Also known as

Siemens 3RH2911-1HA10 Aux Contact Siemens Contactor 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 directly mountable on the front of Siemens SIRIUS 3RT2 contactors (S00-S3) and 3RH2 contactor relays using a simple snap-on mechanism.

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Frequently asked questions

How does the Siemens 3RH2911-1HA10 auxiliary switch operate?

The Siemens 3RH2911-1HA10 provides one Normally Open (NO) contact. This contact remains open when the associated contactor or relay is de-energized and closes when it is energized, providing a signal to the control circuit.