# Siemens 3RH2140-2BW40 Industrial Control Relay

The Siemens **3RH2140-2BW40** is a high-performance industrial control relay designed for reliable operation in demanding automation environments. This component is crucial for modern control systems offering precise switching capabilities. It is an essential part of any robust industrial automation setup ensuring seamless integration and efficient performance. Its design prioritizes longevity and operational stability making it a trusted choice for critical applications.

Engineered for safety and efficiency the Siemens **3RH2140-2BW40** provides dependable control within complex electrical circuits. It is suitable for various automation uses enabling advanced control strategies. Operators rely on its consistent performance for maintaining system integrity and operational continuity. This relay is built to meet stringent industrial standards.

-   **Reliable Switching Performance** for consistent automation control
-   **Durable Construction** built to withstand industrial conditions
-   **High Compatibility** with various Siemens control systems
-   **Efficient Operation** contributing to overall system energy management

## Specifications

AC-3 operational category

Coil voltage 24 V AC

4 NO contacts

The Siemens **3RH2140-2BW40** represents exceptional quality and engineering from Siemens. Integrate this power relay into your industrial automation solutions for guaranteed performance and peace of mind. Discover the Siemens difference for your critical control needs.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Control Components > Relays
- **Tags:** 24V AC relay, 4 NO contacts, automation components, control systems, industrial control relay, Siemens 3RH2140-2BW40, Siemens control

## 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-3rh2140-2bw40-relay)
> Updated: 2026-09-01