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Siemens 3RH1921-2EE02 Lateral Auxiliary Switch - 2 NC

Siemens 3RH1921-2EE02 Encapsulated Lateral Auxiliary Switch - 2 NC.

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ManufacturerSiemens

Part number3RH1921-2EE02

Contact Configuration 2 NC

Terminal Type Spring-Type Terminal

Mounting Lateral

Series SIRIUS 3RH19

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Veteran-owned

CAGE: 9NK75

2 normally closed (NC) contacts Spring-type terminals for fast connection Lateral mounting Solid-state compatible Protected against dust SIRIUS quality

Product description

The Siemens 3RH1921-2EE02 is a laterally mountable auxiliary switch featuring two normally closed (NC) contacts. It is designed for Siemens 3RT1 contactors and utilizes spring-type terminals for efficient wiring. The 'encapsulated' nature of the contacts ensures compatibility with solid-state circuits and provides protection against dust and harsh environments.

This auxiliary switch is suitable for applications requiring two independent NC feedback signals for safety interlocks, status indication, or control logic. Its solid-state compatibility makes it ideal for modern automation systems in manufacturing, process control, and other industrial sectors.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RH1921-2EE02. We provide reliable automation components and expert service to support your operational needs.

Technical specifications

Contact Configuration	2 NC
Terminal Type	Spring-Type Terminal
Mounting	Lateral
Series	SIRIUS 3RH19
Compatibility	Siemens 3RT1 Contactors
Encapsulated	Yes
IP Rating	IP20 (Front)
Insulation Voltage	500V AC

Common applications

Motor Control

Control Panels

Industrial Automation

Safety Circuits

Interlocking

Dusty Environments

Compatible systems

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

Also known as

Siemens SIRIUS 3RH1921-2EE02 3RH1921-2EE02 Siemens Sealed Lateral Double NC Contact

Replaces / compatible with

This laterally mounted auxiliary switch expands the functionality of Siemens 3RT1 contactors with two encapsulated NC contacts, suitable for demanding applications.

Technical note

Expert tip

The encapsulated design ensures high contact reliability in low-power switching applications (>=1mA at 17V). Verify correct snap-on mounting to the 3RT1 contactor for secure and reliable operation.

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Frequently asked questions

Why is the Siemens 3RH1921-2EE02 considered solid-state compatible?

The Siemens 3RH1921-2EE02 features encapsulated contacts that are designed to reliably switch low currents (typically 1 mA at 17 V) found in solid-state control systems. This prevents issues like contact oxidation or poor conductivity that can occur with standard contacts in low-load applications.