# ABB E4H 4000 PR121-P-LSIG Circuit Breaker 4000A 3 Pole

Introducing the powerful **ABB E4H 4000 PR121-P-LSIG**, a robust 3-pole circuit breaker designed for demanding industrial automation applications. This high-capacity breaker ensures reliable protection and control for your critical electrical systems. Its advanced LSIG protection functions offer superior safety against overload, short circuit, and ground faults safeguarding valuable equipment and personnel. The **ABB E4H 4000 PR121-P-LSIG** is engineered for performance and durability in harsh environments.

Engineered for seamless integration into complex control systems, the **ABB E4H 4000 PR121-P-LSIG** operates at 4000A providing exceptional current handling capability. This component is vital for maintaining stable power distribution and protecting sensitive machinery from electrical disturbances. Its construction prioritizes longevity and operational efficiency, making it a trusted choice for industrial automation solutions and marine electrical infrastructure. The **ABB E4H 4000 PR121-P-LSIG** is built to meet stringent industry standards for safety and performance.

-   **Unmatched Protection** Features advanced LSIG trip unit for comprehensive electrical safety.
-   **High Current Capacity** Rated for 4000A, suitable for heavy-duty industrial loads.
-   **Durable Construction** Built to withstand rigorous industrial environments.
-   **Reliable Performance** Ensures consistent operation and protection for automation systems.
-   **3-Pole Design** Ideal for three-phase power distribution applications.

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Industrial Automation > Circuit Protection > Circuit Breakers
- **Tags:** 3 pole breaker, 4000A circuit breaker, ABB circuit breaker, ABB E4H 4000 PR121-P-LSIG, electrical protection, industrial automation, LSIG protection, Ram Automations

## Variants

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

## Images

- ABB E4H 4000 PR121-P-LSIG Circuit Breaker 4000A 3 Pole-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/abb-e4h-4000-pr121-psig-circuit-breaker)
> Updated: 2026-09-21