# ABB E4S 4000 PR121-P-LI Circuit Breaker In4000A 4p F HR

Introducing the ABB E4S 4000 PR121-P-LI, a robust 4-pole circuit breaker designed for demanding industrial automation applications. This high-performance breaker offers exceptional protection and reliability for critical electrical systems. Its advanced design ensures seamless integration into complex control systems, safeguarding your valuable equipment from overcurrent and short-circuit events. Experience superior operational efficiency and peace of mind with this essential component from ABB.

Engineered for industrial environments, the ABB E4S 4000 PR121-P-LI features a substantial 4000A current rating, making it suitable for heavy-duty power distribution. It is built to withstand challenging conditions, providing consistent performance in automation settings. This breaker is a key element in maintaining the integrity of power supplies for machinery and process control, ensuring uninterrupted operations. Its precise tripping mechanisms are vital for protecting sensitive electronic components and preventing costly downtime.

-   **High Performance**: Delivers reliable protection for industrial electrical systems.
-   **Durable Construction**: Built to withstand demanding operational environments.
-   **Advanced Protection**: Safeguards equipment against overcurrent and short circuits.
-   **Seamless Integration**: Designed for easy incorporation into existing automation and control setups.
-   **ABB Quality**: Trust in a leading brand for industrial electrical solutions.

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Electrical > Circuit Breakers > Molded Case Circuit Breakers
- **Tags:** 1SDA056792R1, 4 pole breaker, 4000A breaker, ABB, ABB circuit protection, circuit breaker, E4S 4000, industrial automation, PR121-P-LI

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- ABB E4S 4000 PR121-P-LI Circuit Breaker In4000A 4p F HR-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/abb-e4s-4000-pr121-p-li-breaker)
> Updated: 2026-09-21