Home › Manufacturers › Siemens › 3RH1911-1HA12

Siemens

Siemens 3RH1911-1HA12 Auxiliary Switch Block - 1NO/2NC

Siemens 3RH1911-1HA12 4-pole auxiliary switch block with 1 NO / 2 NC.

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

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RH1911-1HA12

Contacts 1 NO + 2 NC

Terminal Type Screw

Standard EN 50012

Poles 4

Get a price for 3RH1911-1HA12

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

1 Normally Open (NO) contact 2 Normally Closed (NC) contacts Screw terminals for reliable connections Designed for 4-pole motor contactors Compliant with EN 50012 standard

Product description

The Siemens 3RH1911-1HA12 is a 4-pole auxiliary switch block designed for motor contactors. It features 1 normally open (NO) and 2 normally closed (NC) contacts, with screw terminals for secure connections. This unit conforms to EN 50012 standards.

This auxiliary switch block is suitable for use in motor control circuits and other automation applications where a combination of NO and NC auxiliary contacts is needed for control or signaling. It is common in manufacturing, process industries, and machinery.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RH1911-1HA12. We are dedicated to providing access to essential and hard-to-find components for your industrial automation needs.

Technical specifications

Contacts	1 NO + 2 NC
Terminal Type	Screw
Standard	EN 50012
Poles	4

Common applications

Motor control

Automation systems

Control panels

Safety circuits

Industrial machinery

Compatible systems

Siemens 3RH1 series motor contactors

Also known as

Siemens 3RH1911-1HA12 auxiliary contact Siemens 4-pole motor contactor switch 3RH1911-1HA12 switch block

Replaces / compatible with

This auxiliary switch block is a phased-out product. The preferred successor is the SIRIUS 3RH2911-1HA12. It is designed for use with Siemens motor contactors.

Technical note

Expert tip

This auxiliary switch is a discontinued item. The preferred replacement is the SIRIUS 3RH2911-1HA12, part of the newer 3RH2 series.

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 contact configuration for the Siemens 3RH1911-1HA12 auxiliary switch block?

The Siemens 3RH1911-1HA12 auxiliary switch block features a contact configuration of one normally open (NO) contact and two normally closed (NC) contacts. This provides essential auxiliary switching functions for motor control circuits.