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Siemens 3RH1921-1HA13 Auxiliary Switch Block - 1 NO + 3 NC

Siemens 3RH1921-1HA13 4-pole auxiliary switch block with 1 NO + 3 NC contacts.

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ManufacturerSiemens

Part number3RH1921-1HA13

Contacts 1 NO + 3 NC

Poles 4

Terminal Type Screw

Standards EN 50012

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1 NO + 3 NC configuration Screw terminal connections Compatible with S0-S3 contactors EN 50012 compliant Phased-out product

Product description

The Siemens 3RH1921-1HA13 is a 4-pole auxiliary switch block designed for use with motor contactors in sizes S0 to S3. It features 1 normally open (NO) and 3 normally closed (NC) contacts and utilizes screw terminals for connection. This block conforms to EN 50012 standards.

This auxiliary switch block is ideal for various industrial automation applications, including motor control, power distribution, and safety circuits. It is commonly found in manufacturing plants, machine building, and process control systems.

As a veteran-owned surplus parts distributor, Stanlo Automation offers reliable access to essential components like the Siemens 3RH1921-1HA13. We ensure quality and availability for your critical automation needs.

Technical specifications

Contacts	1 NO + 3 NC
Poles	4
Terminal Type	Screw
Standards	EN 50012
Contactor Size Compatibility	S0-S3
Product Type	Auxiliary Switch Block

Common applications

Motor control

Control panels

Automation systems

Machine building

Power distribution

Safety circuits

Compatible systems

Siemens 3RT1 Motor Contactors (Sizes S0-S3)

Also known as

Siemens 3RH1921-1HA13 SIRIUS auxiliary switch Siemens contactor accessory

Replaces / compatible with

This is a phased-out product. The successor is the SIRIUS 3RH2 series.

Technical note

Expert tip

This auxiliary switch block is designed for front mounting on Siemens 3RT1 motor contactors in sizes S0 through S3.

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Frequently asked questions

What is the contact configuration of the Siemens 3RH1921-1HA13 auxiliary switch block?

The Siemens 3RH1921-1HA13 auxiliary switch block features a 4-pole configuration with 1 normally open (NO) and 3 normally closed (NC) contacts.