General
Power range	20-70 W
Input voltage	230-240 V
Output voltage	12 V
Shape	Round
Diameter	53 mm
Maximum operating temperature	90 °C
Technology	Electronic

The Relco HOLE70PFS is an electronic low-voltage transformer designed for power supply of lighting installations in the range of 20 to 70 watts. It serves as a power supply unit for voltage conversion from 230 to 240 volts AC to 12 volts DC, and is therefore suitable for the operational safety of LED luminaires, low-voltage lighting systems, and similar consumers in indoor and outdoor applications. The device is round, with a diameter of 53 mm and a height of 22 mm, and is typically used in electrical installations for decentralized lighting solutions.

Applications

The transformer is designed for use in electrical systems where a safe and stable 12-volt DC supply is required for low-voltage lighting. Typical application areas include residential and commercial construction, garden and outdoor lighting, as well as integrated lighting systems in furniture or architecture. The power range of 20 to 70 watts enables the supply of multiple LED spotlights or a larger luminaire with low power consumption. Due to its compact design, it is particularly suitable for installation in wall- or ceiling-mounted luminaires, where space-saving and discreet integration are important.

Functions and Equipment in Detail

The HOLE70PFS converts the mains voltage of 230 to 240 volts AC into a constant 12-volt DC output, which is required for the operational safety of low-voltage consumers. The electronic circuit ensures a stable output voltage, regardless of fluctuations in the input voltage or load. The maximum power is 70 watts, and the transformer operates reliably even at lower loads of 20 watts. The thermal load capacity is specified with a maximum operating temperature of 90 degrees Celsius, indicating a robust construction that remains stable even under prolonged use and load.

Technology Explained Simply

The transformer operates on the principle of an electronic power supply, using switching regulation to maintain a constant output voltage. Unlike classical transformer technologies with iron cores, this design uses semiconductor components, enabling higher efficiency and a more compact form factor. The input voltage is converted into DC voltage via a bridge rectifier circuit and then reduced to the desired 12-volt output voltage by a switching regulator. This technology is particularly suitable for use in modern LED lighting systems, as it provides precise voltage regulation and low power loss.

Compatibility and Accessories

The transformer is designed for use with LED luminaires and other low-voltage consumers requiring a 12-volt DC supply. It is not suitable for high-voltage lighting or devices with different voltage requirements. Compatibility with specific luminaire models depends on their power consumption and connection type, with the maximum power of 70 watts serving as the upper limit.

Mounting and Installation

Installation is typically done by mounting the unit into a suitable luminaire or electrical installation, where the round shape and low height of 22 mm allow for easy placement in confined spaces. Connections are made via the provided terminals or connection cables, which are connected to the mains voltage and the consumer according to the installation situation. Installation must comply with applicable electrical regulations, especially when used outdoors or in damp rooms.

Operational Advantages

The HOLE70PFS provides reliable power supply for low-voltage lighting systems with low energy consumption. The electronic circuit ensures a stable output voltage, even under fluctuating loads, which can extend the service life of connected luminaires. The compact design and low height facilitate integration into existing luminaire constructions. The maximum operating temperature of 90 degrees Celsius indicates sufficient thermal load capacity for continuous operation.