Encased protection isolating transformers designed mainly for fitting into devices using T-35 bus. Elegant casing, featuring spring bracket significantly facilitates and speeds up attaching. This isolating transformers are made with Class II insulation and protection grade IP30 and IP40 (PSS 10, PSS 20). Protected against overload and short circuit on secondary with PTC. To reset the protecting device disconnect the mains for 10 seconds. Maximum ambient temperature 40°C, thermal class of insulation B (130°C). Manufactured in compliance with EN61558-2-4 and EN61558-2-6.