# ABB E1B 1000 PR121 LSIG Circuit Breaker - 1000A 3-Pole Protection

The **ABB E1B 1000 PR121 LSIG circuit breaker**, part number **1SDA059177R1**, is engineered for superior performance in demanding industrial and commercial applications. This robust circuit breaker provides reliable protection against overloads and short circuits, ensuring the continuous operation and safety of your electrical systems. It is designed to meet the stringent requirements of various industries, providing peace of mind and minimizing downtime.

This **ABB circuit breaker** features a 1000A current rating and a 3-pole configuration, offering comprehensive protection. The **LSIG** (Long-Time, Short-Time, Instantaneous, Ground Fault) functionality allows for customized settings to match specific application needs. The F HR trip unit enhances sensitivity and accuracy, quickly detecting faults to reduce potential damage. This circuit breaker is a dependable choice for ensuring the integrity and safety of electrical distribution networks.

-   **Enhanced Protection:** Provides reliable protection against overloads, short circuits, and ground faults.
-   **Customizable Settings:** LSIG functionality enables tailored protection settings.
-   **High Performance:** Designed for industrial environments, ensuring consistent operation.
-   **Robust Construction:** Built for durability and long-term reliability in demanding conditions.
-   **Easy Installation:** Designed for easy integration into existing electrical systems.

The **ABB E1B 1000 PR121 LSIG circuit breaker** is a cornerstone for protecting your electrical infrastructure. Its advanced features and durable construction make it an ideal choice for a wide array of applications. Trust in the quality and performance of **ABB** to safeguard your equipment and ensure operational continuity. For seamless integration and optimal protection, consider integrating this circuit breaker into your industrial automation systems.

For any queries contact us at [info@ramautomations.com](mailto:info@ramautomations.com)

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Electrical Components > Circuit Breakers > Industrial Circuit Breakers
- **Tags:** 1000A, ABB, circuit breaker, electrical protection, industrial automation, LSIG

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New / 1SDA059177R1 | 999.00 USD | In stock |

## Images

- ABB E1B 1000 PR121 LSIG Circuit Breaker - 1000A 3-Pole Protection-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/abb-e1b-1000-pr121-lsig)
> Updated: 2026-10-03