# Siemens 3TH20 40-0TB4 Contactor Relay 10A 240V - Reliable Control

The **Siemens 3TH20 40-0TB4 Contactor Control Relay** is a robust and dependable solution engineered for precise control in various industrial applications. This relay, designed to handle 10A at 240V, is perfect for auxiliary control circuits and standalone applications. Its German-made construction assures durability and consistent performance, making it a valuable asset in any automation setup.

This **Siemens Contactor Relay** features AC-11 standards with 4A at 230V and 4NO DC at 24V/1.2W. Meeting IEC 60947 and VDE 0660 standards, it provides reliable switching functionality. The compact design with an Unc 8-32 M4 configuration ensures easy integration into existing systems. This relay is a versatile component suitable for general use.

**Key Features:**

-   **10A/240V Rating:** Offers robust performance in AC-1 applications.
-   **German-Made Quality:** Ensures long-lasting reliability and durability.
-   **Versatile Applications:** Suitable for auxiliary control circuits and standalone control.
-   **Compact Design:** Facilitates easy integration with Unc 8-32 M4 configuration.

**Specifications:**

-   Model: 3TH20 40-0TB4
-   Current Rating: 10A
-   Voltage: 240V
-   Standards: IEC 60947, VDE 0660

Choose the **Siemens 3TH20 40-0TB4 Contactor Control Relay** for dependable control in your industrial and automation systems. Its superior build quality and performance make it an ideal choice for engineers and technicians. For further information and support, contact [info@ramautomations.com](mailto:info@ramautomations.com) Ram Automations.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Relays > Control Relays
- **Tags:** 10A 240V relay, 3TH20 40-0TB4, automation, contactor relay, industrial control, Siemens

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New | 999.00 USD | In stock |

## Images

- Siemens 3TH20 40-0TB4 Contactor Relay 10A 240V - Reliable Control-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3th20-40-0tb4-contactor-relay)
> Updated: 2026-10-02