All-or-Nothing relays specially designed for high voltage switching applications, having one or two changeover contacts rated 10A - 5KV AC1 - 5KVA. Ideally suited for arduous duties where performance and reliability are at premium, as usually required inside high voltage applications like transformers, medical appliances, testing equipments, etc. Featuring an open chassis construction, they have 0.25 Faston terminals (6.3 x 0.8 mm) fastened to a ceramic base, in order to suit even extreme safety specifications.