# ABB E4H 4000 PR121 LSIG Circuit Breaker 4000A 4p W MP

Introducing the **ABB E4H 4000 PR121 LSIG** a robust circuit breaker engineered for critical industrial automation systems. This **4000A 4p W MP** device offers superior protection and reliability for demanding electrical environments. The integrated **LSIG trip unit** provides advanced safeguarding against long-time short-time instantaneous and ground faults ensuring operational continuity and equipment safety.

Designed for high-current applications the **ABB E4H 4000 PR121 LSIG** is an essential component for safeguarding power distribution in large-scale industrial facilities. Its **4000A** rating and 4-pole configuration ensure comprehensive protection for complex control systems. The **W MP** designation highlights its versatility across various automation and power management scenarios offering a dependable solution for your protection needs.

-   **High Current Capacity**: Rated for **4000A** to handle significant electrical loads.
-   **Advanced Protection**: Features a comprehensive **LSIG trip unit** for multiple fault detection.
-   **Durable Construction**: Built for long-lasting performance in harsh industrial settings.
-   **Versatile Application**: The **W MP** designation ensures suitability for a wide range of industrial uses.
-   **ABB Reliability**: Trust in the quality and performance synonymous with the **ABB brand**.

The **ABB E4H 4000 PR121 LSIG** is engineered for optimal performance in industrial automation. It integrates seamlessly into existing control systems providing essential protection features. Experience the peace of mind that comes with utilizing a top-tier circuit breaker from a leading global manufacturer. Secure your operations with the unparalleled protection of the **ABB E4H 4000 PR121 LSIG**.

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Industrial Automation > Circuit Protection > Circuit Breakers
- **Tags:** 4 pole breaker, 4000A circuit breaker, ABB circuit breaker, ABB E4H 4000 PR121 LSIG, electrical protection, industrial automation, LSIG trip unit, Ram Automations, W MP designation

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New / 1SDA056874R1 | 999.00 USD | In stock |

## Images

- ABB E4H 4000 PR121 LSIG Circuit Breaker 4000A 4p W MP-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/abb-e4h-4000-pr121-lsig-4000a-4p-w-mp)
> Updated: 2026-09-18