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Siemens SIRIUS 3RH1911-1AA01 Auxiliary Switch Block (1 NC)

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ManufacturerSiemens

Part number3RH1911-1AA01

Contact Configuration 1 NC

Size S00

Connection Screw terminal

Series SIRIUS

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1 Normally Closed (NC) contact Screw terminal connection Designed for S00 size contactors Part of the Siemens SIRIUS line Facilitates control and interlocking

Product description

The Siemens 3RH1911-1AA01 is an auxiliary switch block featuring one normally closed (NC) contact. It is designed for use with S00 size auxiliary and motor contactors from the SIRIUS line. This product is marked as phased-out, with the successor being the SIRIUS 3RH2911-1AA01.

This auxiliary switch block is used to expand the control and signaling capabilities of contactors in motor control circuits, safety systems, and automation sequences. It provides an additional contact for monitoring or interlocking purposes.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RH1911-1AA01. Secure this component or inquire about its successor for your automation needs.

Technical specifications

Contact Configuration	1 NC
Size	S00
Connection	Screw terminal
Series	SIRIUS
Compliance	EN 50005

Common applications

Motor Control

Automation Circuits

Safety Interlocking

Control Panel Wiring

Industrial Machinery

Compatible systems

Siemens SIRIUS S00 size auxiliary and motor contactors.

Also known as

SIRIUS Auxiliary Switch Siemens NC Auxiliary Contact 3RH1911 Auxiliary Block

Replaces / compatible with

This is a phased-out product. The preferred successor type is SIRIUS 3RH2911-1AA01. It is compatible with Siemens SIRIUS auxiliary and motor contactors of size S00.

Technical note

Expert tip

Although the 3RH1911-1AA01 is phased out, it can still be used where specified. However, for new installations or replacements, the successor 3RH2911-1AA01 is recommended by Siemens.

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Frequently asked questions

What is the primary function of the Siemens 3RH1911-1AA01 auxiliary switch block?

The Siemens 3RH1911-1AA01 auxiliary switch block provides one normally closed (NC) contact. It is used to expand the functionality of Siemens SIRIUS motor and auxiliary contactors, typically for signaling, monitoring, or interlocking purposes in control circuits.