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Siemens 3RH1921-2DA11 Lateral Auxiliary Switch - 1 NO, 1 NC

Siemens 3RH1921-2DA11 Lateral Auxiliary Switch - 1 NO, 1 NC.

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ManufacturerSiemens

Part number3RH1921-2DA11

Contact Configuration 1 NO, 1 NC

Terminal Type Spring-Type Terminal

Mounting Lateral

Series SIRIUS 3RH19

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12-month warranty

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Veteran-owned

CAGE: 9NK75

1 NO and 1 NC contact Spring-type terminals for fast wiring Lateral mounting for space saving Compatible with 3RT1 contactors SIRIUS quality IP20 rated

Product description

The Siemens 3RH1921-2DA11 is a lateral auxiliary switch designed for Siemens 3RT1 contactors. It features one normally open (NO) and one normally closed (NC) instantaneous contact, utilizing spring-type terminals for efficient and secure wiring. This side-mounted switch expands the functionality of contactors without interfering with front-mounted accessories.

This versatile auxiliary switch is used in applications requiring both NO and NC feedback signals, such as status monitoring, safety interlocks, and control logic in industrial automation. Industries including manufacturing, energy, and infrastructure rely on these components.

Stanlo Automation, a veteran-owned surplus distributor, is your source for the Siemens 3RH1921-2DA11. We offer quality automation parts and reliable service.

Technical specifications

Contact Configuration	1 NO, 1 NC
Terminal Type	Spring-Type Terminal
Mounting	Lateral
Series	SIRIUS 3RH19
Compatibility	Siemens 3RT1 Contactors
IP Rating	IP20 (Front)
Insulation Voltage	500V AC
Surge Voltage	6 kV

Common applications

Motor Control

Control Panels

Industrial Automation

Safety Interlocks

Status Feedback

Machine Building

Compatible systems

Siemens 3RT10, 3RT12, 3RT145, 3RT146, 3RT147 Contactors

Also known as

Siemens SIRIUS 3RH1921-2DA11 3RH1921-2DA11 Siemens Side Mount Auxiliary Contact

Replaces / compatible with

This lateral auxiliary switch expands the functionality of Siemens 3RT1 series contactors, offering a combination of NO and NC contacts for diverse control applications.

Technical note

Expert tip

When using lateral auxiliary switches, ensure that the total number of auxiliary switches mounted does not exceed Siemens' specifications for the specific 3RT1 contactor model. Check for secure snap-on attachment.

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Frequently asked questions

How does the lateral mounting of the Siemens 3RH1921-2DA11 benefit installation?

The lateral mounting of the Siemens 3RH1921-2DA11 allows it to be attached to the side of the 3RT1 contactor. This is advantageous as it does not occupy the front mounting space, enabling the use of front-mounted accessories simultaneously and optimizing panel space.