Single-phase short circuit proof safety isolating transformer suitable for 12 V handlamps. Designed and tested according to norm EN61558-2-6. Separate insulated windings moulded in self-extinguishing Polyurethane and capsulated in plastic. Insulation class II, double isolated. Approved according to CE directives. Short circuit proof and protected against overload with Miniature circuit breaker concerning primary terminals. Also built-in thermal fuse. Easy to carry and compact design. Suitable for rough environment.