# Siemens 3RH2122-1KE40 Auxiliary Contactor Industrial Control

The Siemens **3RH2122-1KE40** is a high-performance auxiliary contactor designed for reliable operation within industrial automation systems. This component is crucial for expanding control circuits and ensuring precise electrical switching in demanding environments. Its robust construction and advanced design offer significant advantages in terms of operational stability and longevity, making it a trusted choice for control panel builders and maintenance engineers.

Engineered for seamless integration into complex control systems the Siemens **3RH2122-1KE40** provides dependable switching capabilities. It is ideal for applications requiring multiple auxiliary contacts for interlocking or signaling purposes. This device ensures efficient power management and enhances the overall safety and functionality of automated processes. Its compatibility with other Siemens industrial control products further simplifies system design and implementation.

-   **Reliable Switching**: Ensures consistent performance in critical control applications.
-   **Durable Construction**: Built to withstand harsh industrial operating conditions.
-   **Expanded Control**: Facilitates complex interlocking and signaling circuits.
-   **System Integration**: Easily incorporates into existing Siemens automation architectures.
-   **Compact Design**: Offers space-saving solutions in control cabinets.

## Specifications

Contact Configuration: 4 NO

Rated Operational Voltage: 690 V

Rated Operational Current: 17 A

Mounting Type: DIN rail or screw mounting

Operating Temperature: -25 to +60 °C

The Siemens **3RH2122-1KE40** auxiliary contactor embodies the reliability and innovation synonymous with the Siemens brand. It is an essential component for building robust and efficient industrial automation solutions. Enhance your control system's capabilities by choosing this dependable contactor for your next project.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Control Components > Contactors
- **Tags:** 4 NO contacts, automation components, control systems, DIN rail mounting, industrial control products, Siemens 3RH2122-1KE40, Siemens auxiliary contactor

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3rh2122-1ke40-auxiliary-contactor)
> Updated: 2026-09-01