Bell transformer, 8VA Primary 230-240V AC, 50Hz, Secondary 8V AC with PTC fuse, 2TE. Bell transformers are used to operate bells, gongs, door openers, or remote switches. The typical application of these bell transformers is for short-term use, as seen with bells, gongs, door openers, or remote switches in residential buildings. The secondary rated voltages range from AC 4V to 24V. Siemens bell transformers are protected against short circuits or moderate overloads by a PTC resistor. Whether for infrastructure or industrial requirements, Siemens offers bell transformers for all applications and every area of use. Siemens power supplies are characterized primarily by: 1. Convenient and easy installation and connection technology. 2. Reliable safety during installation thanks to standard touch protection. 3. Integrated short circuit and overload protection. 4. Optimal technology for safe voltage supply for your safety - exclusively from Siemens.