Subject: Phase-out announcement of SLC EP 3VT8 MCCBseries products

Dear Siemens EP Partners:

We appreciate the trust you place in Siemens and your consistent support toSiemens Electrical Products business. The 3VT8 MCCB series products have beenlaunched in the Chinese market since 2005, providing customers with low-voltagedistribution solutions.

Siemens continues to enrich its MCCB portfolios and currently has a completerange of 3VA/3VM/3VC series products, which are widely used in various industriessuch as infrastructure, building construction, and equipment manufacturing. Since thesuccessful market launch of the 3VC MCCB series in January 2024, it has providedcustomers with thermal magnetic and electronic protection functions, with variousbreaking performances, and has now fully replaced the 3VT8 MCCB series productsTherefore, we will officially start the phase-out of the 3VT8 MCCB series productsincluding accessories (order number: 3VT ***) from 1st of December 2025.Please refer to the following detailed explanation:

1.Price adjustmentStarting from October 1st, 2025, the average price of 3VT8 MCCB series productsincluding accessories will be increased by 50%, meanwhile the Siemens ElectricalProduct Smart Configuration Tool will be updated accordingly.Starting from October 1st, 2025, Siemens will not prepare stock for 3VT8 MCCBseries products, and the lead time for all the 3VT8 MCCB series products will change to20 working days.

3. Ordering InformationStarting from November ist, 2025, we will no longer accept new orders for 3VT8MCCB series products.

4. After sales serviceFor the 3VT8 MCCB series products that have already been purchased, we willcontinue to provide technical support and after-sales service. You can choose3VA/3VM/3VC MCCB series products to meet your application needs.