Bell transformer, 14VA Primary 230-240 V AC, 50 Hz, secondary 8 V, 12V, 24V AC With PTC fuse, 2MW++ Bell transformers for controlling bells, gongs, door openers or remote control switches. A typical application for these bell transformers is short-time use, as occurs with bells, gongs, door openers or remote control switches in residential buildings. The rated secondary voltages range from 4Â V to 24Â V AC. Siemens bell transformers are protected against short circuits and moderate overload by a PTC resistor. Whether for infrastructure or for industrial requirements, Siemens supplies bell transformers for all applications and every application area. Key features of the network devices from Siemens: 1. User-friendly and easy installation and connection technology. 2. Reliable safety during installation with standard touch protection. 3. Integrated short-circuit and overload protection. 4. Optimized safe power supply technology for your safety â only from Siemens. www.siemens.com/lowvoltage. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and sockets for safe and efficient electrical infrastructure in buildings and industry.