# Siemens 7UT85 Differential Protection Button 1A/5A

The **Siemens 7UT85 Transformer Differential Protection Button**, rated at 1A/5A, is engineered for precise differential protection in transformers. This critical component, manufactured by Siemens, ensures the reliable safeguarding of transformers against potential faults. It is designed for various transformer applications, providing dependable performance in demanding industrial environments. This protection button is an essential part of any robust transformer protection system.

With a working voltage range of Uaux= 60V-250V and Uaux= 100V-230V, and a frequency rating of 45-65 Hz, the **Siemens 7UT85** is compatible with diverse power systems. Featuring Bo-s,-f= 5A/250V and Bo-hs= 5A/200V~/250V specifications, this device offers comprehensive protection. Manufactured in Germany, it adheres to the highest industry standards for durability and reliability. The **P1F110990** code and **Bm1908010505** part number highlight its quality and performance. Weighing 4.370 kg and designed to withstand a maximum operating temperature of 70°C with a maximum auxiliary power of 120Va, this button ensures longevity and consistent operation.

-   **Differential Protection:** Safeguards transformers against internal faults.
-   **High Reliability:** Designed for long-lasting performance.
-   **Wide Compatibility:** Suitable for various power systems.
-   **Robust Design:** Built to withstand heavy-duty use.
-   **Precision Engineering:** Ensures accurate protection.

The **Siemens 7UT85** offers dependable protection for your critical transformer applications. Trust in the Siemens brand for quality and performance. If you need a reliable differential protection solution, the **7UT85** is the perfect choice for your industrial or automation systems. Contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Protection Relays > Differential Protection
- **Tags:** 1A/5A, 7UT85, differential protection, industrial automation, protection relay, Siemens, Siemens 7UT85, transformer protection, transformer relay

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| For Parts Only | 999.00 USD | In stock |

## Images

- Siemens 7UT85 Differential Protection Button 1A/5A-Ram Automations

---

> Source: [Ram Automations](https://ramautomations.com/products/siemens-7ut85-differential-protection)
> Updated: 2026-10-03