Home › Manufacturers › Siemens › 3RH2911-1FB11

Siemens

Siemens 3RH2911-1FB11 Front Auxiliary Switch - 1 NO Leading, 1 NC Lagging

Siemens 3RH2911-1FB11 front auxiliary switch with 1 NO (leading) + 1 NC (lagging).

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RH2911-1FB11

Mounting Front

Contacts 1 NO (leading), 1 NC (lagging)

Terminals Screw

For 3RT2/3RH2

Get a price for 3RH2911-1FB11

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Front mounting 1 NO (leading) + 1 NC (lagging) contacts Screw terminal connections Sequential switching capability For 3RT2/3RH2 contactors

Product description

The Siemens 3RH2911-1FB11 is a front-mounted auxiliary switch featuring a combination of one leading normally open (NO) contact and one lagging normally closed (NC) contact. The NO contact is typically activated before the NC contact during operation. Terminals for the NO contact are indicated by .7/.8, and for the NC contact by .5/.6. It utilizes screw terminals for secure electrical connections and is designed for use with 3RT2 contactors and 3RH2 contactor relays.

This switch is valuable in applications where sequential switching or distinct state signaling is required, such as in motor control circuits with specific pre-operation and post-operation signaling needs, or in complex control logic. It is employed in various industrial automation systems requiring precise timing of contact engagement and disengagement.

Stanlo Automation, a veteran-owned business specializing in surplus industrial parts, offers the Siemens 3RH2911-1FB11. We provide reliable and cost-effective solutions to keep your automation systems operational.

Technical specifications

Mounting	Front
Contacts	1 NO (leading), 1 NC (lagging)
Terminals	Screw
For	3RT2/3RH2
Series	3RH29

Common applications

Motor control circuits

Sequential logic

Control system feedback

Automation sequencing

Industrial control panels

Compatible systems

Siemens 3RT2 Contactors Siemens 3RH2 Contactor Relays

Also known as

Siemens 3RH29111FB11 Siemens sequential auxiliary contact

Replaces / compatible with

This auxiliary switch provides sequential contact operation and is compatible with Siemens 3RT2 contactors and 3RH2 contactor relays.

Technical note

Expert tip

The leading nature of the NO contact and lagging nature of the NC contact in the 3RH2911-1FB11 is critical for implementing specific control sequences.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the operational difference between the NO and NC contacts on the Siemens 3RH2911-1FB11?

The Siemens 3RH2911-1FB11 features a leading NO contact (terminals .7/.8) that closes first upon activation, and a lagging NC contact (terminals .5/.6) that opens last. This allows for sequential control actions.