L79D-Y24-W

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The L79D-Y24-W is a commonly used type of panel indicator/pilot light found in numerous applications. It consists of two components, a pilot light body and a lens typically offering viewing angles of 20° horizontal and 25° vertical. The body is constructed with a die-cast zinc-aluminum alloy material and is designed to fit a standard mounting hole 22.6 mm (0.89 in) in diameter. The lens is made from moulded plastic and is snap-fit into the body.

The most common application of the L79D-Y24-W is the indication of power on and off, as well as system status. This can be done using the pilot light with the aid of a relay or contactor with the pilot light being connected in series with the load to indicate when the load is active. This kind of indicator can be also used in low voltage or AC mains applications, however, caution must be taken when handling AC installations, as incorrect wiring can create potential electric hazards.

In addition to this, the L79D-Y24-W can also be used as a diagnostic indicator in electrical components such as control units, circuit breaker panels, and various other equipment. This is achieved by connecting a relay in parallel with the indicator and circuit at the same voltage as the mains. When the relay is closed, it conducts a small current across the panel indicating a shift in the status of the circuit.

The L79D-Y24-W indicator works on the principle of electric current passing through an illuminated filament, which is visible through the semi-transparent lens. Different colors and intensities of light may be achieved by varying the size of the filament as well as the type of voltage applied to the pilot light body. For instance, 250 Volt AC, 220 Volt DC, 6, 12 and 24 Volt AC/DC can all be used.

The L79D-Y24-W provides reliable performance and is shock, dust, and vibration proof making it a reliable indicator for applications where the pilot light is often subjected to harsh conditions. It also has an excellent environmental performance. In short, it is a reliable, cost-effective and user-friendly panel indicator/pilot light, perfect for a wide range of applications.

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