Doorbell transformer 230/8-12VAC 4VA ST301

Doorbell transformer – reliable power supply for your system

The Hager ST301 doorbell transformer is a compact and efficient device designed to reduce the mains voltage of 230V to safe values of 8V or 12V AC. Designed for a wide range of applications, it will work both in home installations and in commercial facilities. Its modular design simplifies installation and integration with existing electrical infrastructure.

Construction and application

This transformer is ideal for powering electric doorbells, electromagnetic locks, alarm systems and other devices requiring reduced voltage. Thanks to its construction, the transformer provides stable and safe power to connected receivers. Its small dimensions (35 mm wide, 65 mm high and 111 mm long) allow for easy placement in a distribution box or enclosure. Surface mounting further simplifies installation.

Key features and benefits

• Versatile output voltages: The availability of two output voltages (8V and 12V) allows you to adapt the transformer to different needs and devices.
• Safety: It has short-circuit and thermal protection, protecting the installation and devices from damage.
• Modular construction: Allows easy mounting on a TH35 rail, which is particularly important for installers working in a modular system. A width of 2 modules ensures compact dimensions.
• High quality workmanship: Ensures long-lasting and reliable operation of the device.
• Low standby power consumption: Power loss of only 1.8W minimizes energy consumption.
• Suitable for continuous operation: The ability to work at temperatures from -20°C to +40°C ensures reliability in various environmental conditions.
• Maximum output current: 5A allows you to connect multiple receivers with low current consumption.
• Output power: Power of 4VA is sufficient for most standard doorbell and alarm applications.

Thanks to these features, the Hager ST301 transformer is a solid choice for both professional installers and end users looking for a reliable solution for powering low-voltage devices.