# E4H 4000 PR121 P LSI ABB 4000A Circuit Breaker

The **E4H 4000 PR121 P LSI** circuit breaker from ABB is engineered for superior performance and protection in demanding electrical systems. This robust **4000A circuit breaker** is designed to safeguard against overloads and short circuits, ensuring the reliable operation of industrial and commercial applications. Its 3-phase configuration makes it ideal for managing high-power electrical distribution.

This ABB circuit breaker incorporates advanced technology to deliver exceptional performance. The **PR121 P LSI** trip unit provides precise protection, and is suitable for various applications. It is designed to meet the highest industry standards, ensuring longevity and dependable service in critical systems. The **E4H 4000** series is known for its durability and efficiency.

-   **High Current Rating:** Handles up to 4000A for robust protection.
-   **3-Phase Configuration:** Ideal for industrial and commercial power distribution.
-   **Advanced Protection:** Equipped with PR121 P LSI trip unit for precise performance.
-   **ABB Quality:** Built to the highest standards for reliability and longevity.
-   **Versatile Applications:** Suitable for a wide range of electrical systems.

The **ABB E4H 4000 PR121 P LSI** circuit breaker provides unparalleled reliability and protection for your electrical systems. Trust in ABB’s expertise to protect your equipment and ensure smooth operations. It is perfect for those seeking dependable circuit protection. Contact [info@ramautomations.com](mailto:info@ramautomations.com) for more information.

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Electrical Components > Circuit Breakers > Industrial Breakers
- **Tags:** 3-phase circuit breaker, 4000A circuit breaker, ABB, circuit protection, E4H 4000, industrial applications, PR121 P LSI

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New / 1SDA056865R1 | 999.00 USD | In stock |

## Images

- E4H 4000 PR121 P LSI ABB 4000A Circuit Breaker-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/e4h-4000-pr121-p-lsi-abb)
> Updated: 2026-10-02