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Siemens 3RH1911-1FA40 Auxiliary Switch Block - 4NO

Siemens 3RH1911-1FA40 4-pole auxiliary switch block with 4 NO contacts.

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ManufacturerSiemens

Part number3RH1911-1FA40

Contacts 4 NO

Terminal Type Screw

Size S00

Standard EN 50005

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4 Normally Open (NO) contacts Screw terminals for secure connections Designed for S00 size contactors Compliant with EN 50005 standard Robust construction for industrial use

Product description

The Siemens 3RH1911-1FA40 is a 4-pole auxiliary switch block equipped with 4 normally open (NO) contacts. It is designed for use with auxiliary and motor contactors and features screw terminals for reliable termination. This switch block is compatible with size S00 contactors and conforms to EN 50005 standards.

This component is ideal for applications in motor starting circuits, control logic, and safety interlocks where multiple normally open contacts are required. It is widely used in manufacturing automation, electrical switchgear, and industrial machinery control.

Stanlo Automation, a veteran-owned business specializing in surplus industrial automation parts, offers the Siemens 3RH1911-1FA40. We provide a reliable source for these essential components, ensuring your operations continue smoothly.

Technical specifications

Contacts	4 NO
Terminal Type	Screw
Size	S00
Standard	EN 50005
Poles	4

Common applications

Motor control

Control systems

Automation solutions

Interlocking circuits

Switchgear

Compatible systems

Siemens 3RH1 series contactors

Also known as

Siemens 3RH1911-1FA40 auxiliary contact Siemens S00 4 NO switch 3RH1911-1FA40 switch

Replaces / compatible with

This is a phased-out product; the preferred successor is the SIRIUS 3RH2911-1FA40. It is intended for use with Siemens contactors.

Technical note

Expert tip

Note that this auxiliary switch block is a discontinued item, with the 3RH2911-1FA40 serving as its direct replacement in the SIRIUS 3RH2 series.

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Frequently asked questions

What type of contacts does the Siemens 3RH1911-1FA40 auxiliary switch block have?

The Siemens 3RH1911-1FA40 auxiliary switch block is equipped with four normally open (NO) contacts. This configuration is useful for initiating actions or completing control circuits when activated.