This Acti 9 iTR 16VA bell transformer allows to obtain a very low voltage 8VAC or 12VAC from a network 230VAC. The transformer is safe meaning that primary and secondary circuits are perfectly insulated by each other. The power supply is 16VA. The operating frequency is 50Hz or 60Hz. The primary voltage is 230VAC +/-10%. The secondary voltage output is 8VAC or 12VAC +/-15%. It is resistant to short-circuit currents thanks to the built-in-device. The off load voltage is 13VAC for a 8VAC rated secondary voltage. The off load voltage is 18VAC for a 12VAC rated secondary voltage. It is a Class II device with terminal shield (optional). The bell transformer can be mounted on DIN rail in vertical or horizontal position. The width in 9mm pitches is 4. The weight is 384g. The degree of protection under IEC 60529 standard is IP20 with terminal shield. The dimensions are (W) 36mm x (H) 89mm x (D) 60mm. The width in modules of 18mm is 2. The operating temperature is -20°C to 55°C. The storage temperature is -25°C to 80°C. This product complies with IEC/EN 61558-2-6 standard.