IEC 61300-2-12:2009 evaluates the ability of a passive fibre optic device or a closure to withstand impacts likely to be encountered during usage. The impact may be a localized impact, a series of impacts with hard objects, or an impact normally associated with dropping the device. In this third edition, the impact test with a steel ball has been added.The contents of the corrigendum of June 2011 have been included in this copy.