# Siemens 7SJ6621-6KB901FE4BB Multifunction Protective Relay - 1A

The **Siemens 7SJ6621-6KB901FE4BB** Multifunction Protective Relay is a critical component for safeguarding electrical systems. Designed for industrial and commercial applications, this relay provides reliable protection against various faults and abnormalities. As a part of the Siemens Siprotec 7SJ66 series, it offers advanced functionality and versatile performance.

This protective relay, operating with a rated current of 1A and a frequency range of 50-60Hz, is engineered to detect and respond rapidly to potential issues. The **7SJ6621-6KB901FE4BB** model, manufactured in India, ensures high quality and dependable protection. Furthermore, it operates effectively within a rated voltage range of 100-125V, offering precise monitoring and control to ensure operational safety and efficiency. It is designed to meet high quality standards and deliver reliable protection for critical equipment and systems.

Key features include:

-   **Precision Fault Detection:** Rapidly identifies and isolates electrical faults.
-   **Versatile Protection:** Supports a wide range of protection functions.
-   **Reliable Performance:** Ensures stable operation in various conditions.
-   **User-Friendly Interface:** Easy configuration and monitoring for operational convenience.

The **Siemens 7SJ6621-6KB901FE4BB** provides dependable protection for electrical installations. Trust in the Siemens Siprotec 7SJ66 series for efficient protection of your valuable electrical assets. For inquiries or to integrate this relay into your automation systems, contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Protective Relays > Multifunction Relays
- **Tags:** 1A relay, 7SJ6621-6KB901FE4BB, electrical protection, industrial automation, protective relay, Siemens, Siprotec 7SJ66

## Variants

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

## Images

- Siemens 7SJ6621-6KB901FE4BB Multifunction Protective Relay - 1A-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-7sj6621-6kb901fe4bb-relay)
> Updated: 2026-10-03