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Siemens 3RH1921-1XA22-0MA0 Front Auxiliary Switch - 2 NO, 2 NC

Siemens 3RH1921-1XA22-0MA0 Front Auxiliary Switch with 2 NO, 2 NC contacts.

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ManufacturerSiemens

Part number3RH1921-1XA22-0MA0

Contact Configuration 2 NO, 2 NC

Terminal Type Screw Terminal

Mounting Front-side

Series SIRIUS 3RH19

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Veteran-owned

CAGE: 9NK75

4 instantaneous contacts (2 NO, 2 NC) Screw terminals for secure connection Front-side mounting Compatible with 3RT1 contactors SIRIUS quality and reliability IP20 protection

Product description

The Siemens 3RH1921-1XA22-0MA0 is a front-side auxiliary switch designed for use with Siemens 3RT1 contactors. It features 2 normally open (NO) and 2 normally closed (NC) instantaneous contacts, utilizing screw terminals for secure connections. This switch is suitable for various industrial applications requiring expanded control and signaling capabilities.

This auxiliary switch is commonly employed in motor control circuits, control panels, and automation systems where feedback on the contactor's status is essential. Industries such as manufacturing, building automation, and power distribution benefit from the enhanced functionality and reliability it provides.

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Technical specifications

Contact Configuration	2 NO, 2 NC
Terminal Type	Screw Terminal
Mounting	Front-side
Series	SIRIUS 3RH19
Compatibility	Siemens 3RT1 Contactors
IP Rating	IP20 (Front)
Insulation Voltage	690V AC
Surge Voltage	6 kV

Common applications

Motor Control

Control Panels

Automation Systems

Industrial Machinery

Switchgear

Building Automation

Compatible systems

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

Also known as

Siemens SIRIUS 3RH1921-1XA22-0MA0 3RH1921-1XA22 Siemens Auxiliary Contact Block

Replaces / compatible with

This auxiliary switch is designed to expand the functionality of Siemens 3RT1 series contactors and is compatible with their specified mounting configurations.

Technical note

Expert tip

Ensure correct sequence numbering (5-8) for mounting on 3RT1 contactors as specified by Siemens. Ensure proper tightening of screw terminals to prevent overheating or loose connections.

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Frequently asked questions

What is the contact configuration of the Siemens 3RH1921-1XA22-0MA0?

The Siemens 3RH1921-1XA22-0MA0 features 2 normally open (NO) and 2 normally closed (NC) instantaneous contacts. This provides versatile signaling and control options when integrated with compatible Siemens contactors.