Weidmüller VPU AC II US 3+1 R 240/50 Y is a Surge arrester AC (Type 2), Mains voltage: 230 V / 400 V, Low voltage network: TN-C-S, TN-S, TT, IT with N, IT without N, Number of poles: 4. The device is a Type II surge protection and is also tested as Type III device. It can be installed in the sub distribution board and also can protect the following end devices against surge voltages caused by switch operations or indirect lightning. The portfolio offers a wide range of applications with different nominal voltages, suitability for various types of main voltages and worldwide usage in high-elevation regions and long warranty. All devices can be installed in various applications. https://elecena.pl/product/29438833/weidm-x171-ller-2736440000-surge-voltage-arrester-protection-device 2025-10-19 https://elecena.pl/product/29438833/weidm-x171-ller-2736440000-surge-voltage-arrester-protection-device 2026-05-12 https://elecena.pl/product/29438833/weidm-x171-ller-2736440000-surge-voltage-arrester-protection-device 2026-06-04 https://elecena.pl/product/29438833/weidm-x171-ller-2736440000-surge-voltage-arrester-protection-device 2026-07-21