Power supply indicator lamp with protection LK-BZ-703R 1/3S 3x230V 3xLED RED

Power supply monitoring in a compact housing

The LK-BZ-703R power supply indicator light is a reliable device signaling the presence of voltage in a three-phase installation. It occupies only 1/3 of a module on a 35mm rail, saving space in the distribution board. The red LED color provides a clear and easily noticeable indication of the power supply status. This is a simple but effective solution for installers and users who need visual control over the availability of voltage.

Functionality and safety

The device is designed to monitor 3x230V+N voltage. Built-in protection in the form of fast-blow fuses (500mA/channel, breaking capacity 100A @250V AC) protects the circuit from overload and short circuit – as with most circuit breakers in this class. The rated current per channel is 1mA, and the power consumption is only 0.15W/channel, minimizing the impact on energy consumption. The connection is made using screw terminals 2.5 mm², providing a secure connection of the wires (tightening torque 0.4 Nm).

Installation and operating conditions

The LK-BZ-703R indicator light is mounted on a standard 35 mm rail, making installation quick and easy. A wide operating temperature range (-30°C to +50°C) allows it to be used in various environmental conditions. The IP20 degree of protection provides basic protection against touch and dust. The device is ideal for use in residential, commercial and industrial buildings where visual control of the three-phase power supply status is required.