# Siemens 3UA7021-1A Overload Relay - 600Vac Thermal Protection

The **Siemens 3UA7021-1A Overload Relay** provides reliable thermal overload protection for motors and industrial equipment operating up to 600Vac. This relay is essential for preventing damage from overcurrent conditions in automation systems. What makes it ideal for industrial applications is its robust design and compliance with IEC and VDE standards.

This **overload relay** features a 1 NO + 1 NC auxiliary contact configuration and a tripping current of 125% at 600V AC, ensuring quick response to overloads. The **Siemens 3UA7021-1A** is designed for easy integration into existing control systems, providing dependable protection for your valuable equipment. Suitable for use in various industrial automation and control applications.

-   **Reliable Overload Protection:** Prevents motor damage from overcurrent.
-   **IEC and VDE Compliance:** Meets industry safety standards.
-   **Auxiliary Contacts:** Includes 1 NO + 1 NC contact configuration.
-   **Easy Integration:** Simple setup into existing control systems.
-   **Durable Construction:** Built to withstand demanding industrial environments.

**Specifications:**

-   Voltage: 600Vac
-   Current Range: 1-1.6A
-   Tripping Current: 125%
-   Auxiliary Contacts: 1 NO + 1 NC

Trust **Siemens** for reliable and high-performance overload protection. The **3UA7021-1A** is designed to keep your systems running smoothly. Get yours 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:** Siemens
- **Type:** Industrial Automation > Control Components > Overload Relays
- **Tags:** 3UA7021-1A, automation, motor-protection, overload-relay, siemens, thermal-protection

## Variants

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

## Images

- Siemens 3UA7021-1A Overload Relay - 600Vac Thermal Protection-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3ua7021-1a-overload-relay)
> Updated: 2026-09-19