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Siemens 3RH1911-2FA40 SIRIUS Auxiliary Switch Block - 4 NO

Siemens 3RH1911-2FA40 SIRIUS Auxiliary Switch Block with 4 NO contacts.

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ManufacturerSiemens

Part number3RH1911-2FA40

Configuration 4 NO

Terminals Spring-type

Size S00

Poles 4

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4 NO contacts Spring-type terminals Size S00 compatibility SIRIUS series Robust construction

Product description

The Siemens 3RH1911-2FA40 is a 4-pole auxiliary switch block from the SIRIUS industrial control range, designed to expand the auxiliary contact capabilities of Siemens motor contactors.

This block is equipped with 4 normally open (NO) instantaneous contacts and utilizes spring-type terminals for fast and secure connections. It is designed for size S00 contactors and conforms to EN 50005 standards. This product is phased out, with its successor being the 3RH2911-2FA40 in the SIRIUS 3RH2 series.

This component is essential for applications requiring multiple feedback signals, interlocking functions, or additional control points in automation systems and machinery. Stanlo Automation, a veteran-owned surplus parts distributor, provides reliable industrial components like the 3RH1911-2FA40.

Technical specifications

Configuration	4 NO
Terminals	Spring-type
Size	S00
Poles	4
Standard	EN 50005
Series	SIRIUS 3RH1911

Common applications

Industrial control

Automation

Motor control centers

Machine safety

Signaling and feedback

Compatible systems

Siemens 3RT1015, 3RT1016, 3RT1017, 3RT1316, 3RT1317, 3RT1515, 3RT1516, 3RT1517, 3RT1617 contactors and 3RH relays.

Also known as

Siemens 3RH1911-2FA40 Auxiliary Contact Block SIRIUS 3RH1911-2FA40

Replaces / compatible with

This phased-out product has been replaced by the Siemens SIRIUS 3RH2 series, with the preferred successor being the 3RH2911-2FA40.

Technical note

Expert tip

This auxiliary switch block is a phased-out product. The successor is the 3RH2911-2FA40, part of the SIRIUS 3RH2 series.

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Frequently asked questions

What is the primary function of the Siemens 3RH1911-2FA40 auxiliary switch block?

The Siemens 3RH1911-2FA40 auxiliary switch block serves to expand the number of available auxiliary contacts on a Siemens motor contactor or control relay. It provides four normally open (NO) contacts for use in control circuits.