# Siemens 3TK2803-0BB4 Contactor Safety Relay - 24V DC

The **Siemens 3TK2803-0BB4 Contactor Safety Relay** is engineered for critical safety applications in industrial settings. This robust relay ensures the reliable control of electrical circuits, providing a vital layer of protection for machinery and personnel. Designed for demanding environments, this relay offers dependable performance, making it an essential component for automated systems and control panels. This **contactor safety relay** is ideal for use in various industrial automation applications, ensuring safety and efficiency.

This **Siemens contactor safety relay**, with its 24V DC coil voltage and compliance with VDE 0660 standards, is a testament to its safety-focused design. Equipped with 2 normally open (NO) contacts, it is suitable for circuits up to 6A at 240V AC. The auxiliary contact is rated at B300/Q300, and it can handle up to 6A of current, thereby ensuring smooth and efficient operation in critical applications. Built in Germany, the 3TK2803-0BB4 is designed to withstand the rigors of industrial operations. It's suitable for copper wire up to 60°C and designed for flexible installation. The **3TK2803-0BB4** ensures the safety and control required in modern industrial environments.

Key Features:

-   **Reliable Safety:** Ensures the secure operation of industrial machinery.
-   **High Capacity:** Handles up to 6A at 240V AC for efficient circuit control.
-   **Durable Design:** Manufactured in Germany, built to withstand industrial demands.
-   **Versatile Application:** Suitable for a wide range of control systems and automated equipment.
-   **Easy Installation:** Compact design for flexible and easy installation.

Specifications:

-   Part Number: 3TK2803-0BB4
-   Coil Voltage: DC 24V
-   Contact Configuration: 2 NO
-   Current Rating: 6A
-   Voltage Rating: 240V AC
-   Compliance: VDE 0660

The **Siemens 3TK2803-0BB4** offers unmatched reliability and performance, ensuring the safety and efficiency of your industrial operations. Trust in the quality of **Siemens** for superior control solutions. Integrate the 3TK2803-0BB4 into your automation systems today for enhanced safety and operational excellence. For further assistance, contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Safety Relays > Contactor Relays
- **Tags:** 3TK2803-0BB4, contactor safety relay, electrical control, industrial automation, safety relay 24V DC, Siemens

## Variants

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

## Images

- Siemens 3TK2803-0BB4 Contactor Safety Relay - 24V DC-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3tk2803-0bb4-contactor-safety-relay)
> Updated: 2026-10-02