Single-phase short circuit proof safety isolating transformer designed and tested according to norm EN61558-2-6. Separate insulated windings moulded in self extinguishing Polyurethane. Short circuit protected with glass tube fuse and protected against unusually high operation temperature with thermal "cut-out". For fixed installation, simple and easy mounting on wall or ceiling. Variable secondary output by using the 230 or 250 Volt primary terminals. Designed for SELV installation which require safety isolating transformer approved according to the CE directives. Typical alarm equipment, automation, floor heaters etc., can also be used in halogen lighting installations.