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Siemens 3RH1921-1DA11 Lateral Auxiliary Switch

Siemens 3RH1921-1DA11 lateral auxiliary switch with 1 NO, 1 NC contact.

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ManufacturerSiemens

Part number3RH1921-1DA11

Mounting Lateral

Contacts 1 NO + 1 NC

Terminal Type Screw terminal

Compatible with Siemens 3RT1 contactors

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Veteran-owned

CAGE: 9NK75

Lateral mounting 1 NO + 1 NC contacts Screw terminals Designed for 3RT1 contactors Versatile contact arrangement

Product description

The Siemens 3RH1921-1DA11 is a lateral auxiliary switch designed for mounting on the side of Siemens 3RT1 contactors. It features screw terminals and provides a contact configuration of one normally open (NO) and one normally closed (NC) contact. This accessory expands the control and signaling capabilities of the 3RT1 contactors.

This lateral auxiliary switch is essential for applications requiring both NO and NC auxiliary contacts for 3RT1 contactors, such as interlocking schemes, status indication, or alarm functions. It is commonly used in industrial control panels, motor control centers, and various automated systems across different industries.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RH1921-1DA11. We are dedicated to providing high-quality surplus automation components to meet your MRO needs and ensure operational efficiency.

Technical specifications

Mounting	Lateral
Contacts	1 NO + 1 NC
Terminal Type	Screw terminal
Compatible with	Siemens 3RT1 contactors

Common applications

Motor control

Control panels

Automation systems

Signaling circuits

Interlocking circuits

Fault indication

Compatible systems

Siemens 3RT1 contactors

Also known as

Siemens 3RH1921-1DA11 auxiliary contact Siemens 3RT1 lateral auxiliary switch

Replaces / compatible with

This auxiliary switch is designed to be attached to the side of Siemens 3RT1 series contactors to add both normally open and normally closed auxiliary contacts.

Technical note

Expert tip

The lateral mounting design of the 3RH1921-1DA11 allows for flexible expansion of contactor functions without obstructing front-panel access.

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Frequently asked questions

What is the contact configuration of the Siemens 3RH1921-1DA11 lateral auxiliary switch?

The Siemens 3RH1921-1DA11 lateral auxiliary switch provides one normally open (NO) contact and one normally closed (NC) contact, utilizing screw terminals for connection to Siemens 3RT1 contactors.