Safety transformer, 40VA Primary 230 V AC, 50Hz, secondary 12 V, 16V, 24V, 32V AC With PTC fuse, 5 MW++ Safety transformers provide a safety extra-low voltage for supplying control circuits, switching relays or Insta contactors. These safety transformers up to 63VA provide a safety extra-low voltage for supplying control circuits, switching relays or Insta contactors in continuous operation as an alternating voltage power supply for 8V, 12V, 16V, 24V and 32V AC. Siemens safety transformers are protected against short circuits or moderate overload by a PTC resistor. Whether for infrastructure or for industrial requirements, Siemens provides safety 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 – only from Siemens.