Need More Details?
If you’d like to check stock availability, request the latest price, or view more product images, simply click the "Request for Price" button and our team will assist you promptly.

Introducing the powerful ABB E4H 4000 PR121 PLI circuit breaker, a robust solution for demanding industrial automation and control systems. Designed for exceptional performance and reliability, this 4-pole breaker offers superior protection with its 4000A current rating. The advanced F HR design ensures consistent operation, making it an ideal choice for safeguarding critical electrical infrastructure. Trust in the engineering excellence of ABB for your most vital applications.
Engineered for versatility, the E4H 4000 PR121 PLI breaker integrates seamlessly into various electrical setups. Its high current carrying capacity and robust construction make it perfect for scenarios requiring significant power distribution and fault protection. This ABB component is built to withstand challenging environments and deliver unwavering performance, supporting the operational continuity of your industrial processes. For systems demanding high-grade protection, this breaker is a prime selection.
Brand ABB
Part Number E4H 4000 PR121 PLI
Model E4H 4000 PR121 PLI
Current Rating 4000A
Poles 4
Invest in the integrity and efficiency of your electrical systems with the ABB E4H 4000 PR121 PLI circuit breaker. Its proven design and substantial capacity provide the security and performance required for modern industrial automation. Ensure your operations are protected by choosing this dependable solution from ABB.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.