Network transformer TR-12 output voltage 12VA, I=0.66A, output power 8VA

Universal power transformer for wide application

The TR-12 transformer is a reliable device designed to reduce mains voltage from 230V AC to a safe level of 12V AC. It will work both in home installations and in more demanding industrial or office environments. Its modular design facilitates mounting on a standard 35mm rail, which is particularly appreciated by installers. End users, in turn, gain confidence in stable and safe power supply for their devices.

Construction and application

The TR-12 transformer is designed to power electrical and electronic devices that do not require stabilized voltage. It is perfect for LED lighting, alarm systems, doorbells, and various types of automation. Its isolation transformer provides galvanic isolation between the primary and secondary circuits, which increases safety. Additionally, a built-in single thermal fuse protects against overheating (up to 115°C), which extends the life of the device. For complete protection of the receiver, however, it is recommended to use additional overcurrent protection on the secondary side (e.g., BZ-1 fuse module with a value of 1.5A).

Performance and parameters

The output power of the transformer is 8VA at a secondary voltage of 12V AC, and the maximum load current is 0.66A. The efficiency of the device reaches 85%, which translates into efficient energy use. Compact dimensions (52.5 mm width, 90 mm height and 65 mm depth) and a weight of 325g make it easy to mount even in tight spaces. The transformer has screw terminals with a cross-section of up to 4.0 mm² with a tightening torque of 0.5 Nm, which ensures a secure connection of the wires. The device operates in a temperature range from -10°C to +40°C and has a protection degree of IP20 - which means it is protected against finger contact. The design as an isolation transformer guarantees safe use and minimizes the risk of electric shock.