Phase sequence indicator lamp with protection (yellow-red-green) LK-BZ-3K

Three-phase control lamp with protection – reliable network status indication

This three-phase control lamp LK-BZ-3K from F&F is a practical solution for the optical signaling of voltage in three-phase networks. Thanks to the use of LEDs in yellow, red and green colors, it enables quick and intuitive identification of the status of each phase. The device is particularly useful in electrical switchboards, where visual control of the power supply status is crucial for safety and effective diagnostics.

Safety and space saving

The LK-BZ-3K lamp features built-in fuses connected in series to each LED. This intelligent solution eliminates the need for additional protective modules, which translates to saving space in the switchboard. Additionally, the output of the other end of the fuse to the housing connection allows it to be used to protect other circuit elements, increasing the functionality of the device.

Mounting and technical parameters

The lamp is designed for mounting on a 35 mm rail and occupies a width of one module (18 mm). Powered by 230 V AC, it has screw terminals of 2.5 mm² providing a solid connection of the wires. The IP20 protection class guarantees basic protection against touch and dust. The rated current of the illuminated indicator is 1.7 mA per phase, and the power consumption is only 0.2 W/phase – making it an energy-saving solution. The maximum fuse current is 6.3 A at a maximum breaking voltage of 250 V.

For installers and end users

Thanks to its design and functionality, the LK-BZ-3K lamp is ideal for both professional installers and end users. Installers will appreciate the ease of installation and space saving in the switchboard, and end users – quick and clear information about the power supply status of individual phases. In the event of a voltage drop or a blown fuse, the appropriate LED stops lighting, signaling a problem and enabling a quick response.