# Siemens 3RH2140-1JB40 Coupling Relay - 24VDC 4NO - PLC Compatible

The Siemens 3RH2140-1JB40 Coupling Relay is designed for reliable auxiliary circuit switching in industrial automation. This 24VDC relay features 4 normally open contacts, ensuring seamless integration with PLC systems and robust performance in demanding environments.

This Siemens relay integrates a diode for surge suppression, enhancing PLC compatibility and system longevity. Its compact SIRIUS S00 design facilitates easy DIN rail or panel mounting, making it ideal for motor control centers and automation panels requiring dependable low-power switching.

**Key Features:**

-   **4 NO Contact Configuration** for versatile control applications
-   **24 V DC Coil** with wide operating range for stable performance
-   **Integrated Diode** for surge suppression and enhanced PLC compatibility
-   **Compact SIRIUS S00 Design** for easy DIN rail mounting
-   **High Electrical Endurance** for reliable industrial automation

**Specifications:**

-   Part Number: 3RH2140-1JB40
-   Coil Voltage: 24 V DC
-   Number of Poles: 4 NO
-   Series: Siemens SIRIUS 3RH2

The Siemens 3RH2140-1JB40 coupling relay ensures precise switching performance in PLC-driven automation systems. Its robust design and integrated protection provide long-term durability and safe control. Upgrade your automation system today.

Also our company name is Ram Automations and also you can contact us on email info@ramautomations.com

## Details

- **Price:** 999.0 USD
- **Vendor:** Ram Automations
- **Type:** Industrial Automation > Relays > Coupling Relays
- **Tags:** 24VDC, 3RH2140-1JB40, 4NO, automation-relay, coupling-relay, PLC-relay, Siemens

## Variants

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

## Images

- Siemens 3RH2140-1JB40 Coupling Relay - 24VDC 4NO - PLC Compatible-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3rh2140-1jb40-coupling-relay)
> Updated: 2026-09-30