BS EN 61643-11:2012 Low-voltage surge protective devices. Surge protective devices connected to low-voltage power systems. Requirements and test methods
2018BS EN 61643-11:2012+A11:2018 Low-voltage surge protective devices. Surge protective devices connected to low-voltage power systems. Requirements and test methods
2012BS EN 61643-11:2012 Low-voltage surge protective devices. Surge protective devices connected to low-voltage power systems. Requirements and test methods
2002BS EN 61643-11:2002 Low-voltage surge protective devices — Part 11: Surge protective devices connected to low-voltage power systems — Requirements and tests