# Siemens 7SD5111-5CA02-1AA0EF Comparison Protection Relay

The **Siemens 7SD5111-5CA02-1AA0EF** Comparison Protection Relay is a critical component for safeguarding electrical systems. Designed for industrial applications, this relay provides robust protection against various electrical faults. With its advanced Leitungsvergleichschutz functionality and precision engineering, it ensures the safety and efficiency of your electrical infrastructure.

This **Siemens** protection relay operates with an input current of 1A and a frequency range of 50-60 Hz, suitable for a wide array of applications. The **7SD5111-5CA02-1AA0EF** model is engineered to handle challenging electrical environments. It features a voltage rating of 220-250V DC and a compact, durable design. This relay is a reliable choice for protecting your valuable equipment. If you are looking for a protection relay, you can trust **Siemens** for all your needs.

-   **Leitungsvergleichschutz** functionality for comprehensive fault detection.
-   Input current of 1A and frequency range of 50-60 Hz for versatile use.
-   Designed for ease of installation with a detailed diagram.
-   Durable construction suitable for both permanent installations and portable applications.
-   Voltage rating of 220-250V DC for handling demanding electrical conditions.

This **Siemens 7SD5111-5CA02-1AA0EF** relay provides reliable protection and is a must-have for any industrial or automation system. Its high-quality standards and precision engineering make it a trusted choice. Contact [info@ramautomations.com](mailto:info@ramautomations.com) or visit our website for more information on how this relay can enhance your system's safety and performance.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Protection Relays > Comparison Relay
- **Tags:** 7SD5111-5CA02-1AA0EF, electrical protection, industrial automation, Leitungsvergleichschutz, protection relay, Siemens

## Variants

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

## Images

- Siemens 7SD5111-5CA02-1AA0EF Comparison Protection Relay-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-7sd5111-5ca02-1aa0ef-relay)
> Updated: 2026-10-03