What is a Pilot Light Switch?
A pilot light switch is an electrical switch that includes a small indicator light. This light illuminates when the circuit is closed and the switch is in the “on” position. The pilot light serves as an indicator to show whether the connected load (such as a light fixture or appliance) is powered on or off. These switches are designed to enhance safety and convenience by providing a visual indication of the circuit status. Whether you’re illuminating a dark hallway or ensuring that outdoor lights are on, a pilot light switch can be a practical addition to any electrical setup.
How Does the Pilot Lamp Indicator Work?
A pilot lamp indicator switch typically consists of a switch and a small indicator lamp, often an LED. Here’s how it generally works.
#1. Switch Mechanism: The switch itself operates just like a regular switch, allowing you to turn a circuit on or off by physically toggling it.
#2. Indicator Lamp Circuit: Inside the switch, there’s a circuit dedicated to powering the indicator lamp. This circuit is usually separate from the main circuit controlled by the switch.
#3. Wiring: When you connect the switch to a power source and a load (like a light or an appliance), electricity flows through the switch. Additionally, a small amount of power is directed to the indicator lamp circuit.
#4. Indicator Activation: When you toggle the switch to turn the circuit on, electricity flows through the indicator lamp circuit as well. This causes the indicator lamp to light up, indicating that the switch is in the “on” position and the connected device is receiving power.
#5. Indicator Deactivation: When you toggle the switch to turn the circuit off, the electricity flow to the indicator lamp circuit is cut off, and the indicator lamp turns off, indicating that the switch is in the “off” position and the connected device is not receiving power.
What Are Pilot Light Indicator Switches Used For?
Pilot light indicator switches offer a simple yet effective way to enhance safety, convenience and energy efficiency in various electrical systems and environments. They’re used for the following:
Status Indication: The primary function of a pilot light indicator switch is to provide a visual indication of the status of the connected circuit. This helps users quickly determine whether the circuit is on or off without needing to physically check the device or appliance.
Safety: In environments where it’s critical to know if a circuit is energized or de-energized for safety reasons, such as in industrial settings or with machinery, pilot light indicator switches offer a clear visual cue to operators.
Convenience: In low-light conditions or areas where visibility may be limited, such as basements, attics or utility rooms, pilot light indicator switches make it easier to locate and operate switches.
Energy Efficiency: Pilot light indicator switches can help promote energy efficiency by reminding users to turn off lights or appliances when they’re not in use. The illuminated indicator serves as a visual reminder that the circuit is still active.
Diagnostic Tool: In some cases, the pilot light can also serve as a diagnostic tool. If the indicator light fails to illuminate when the switch is turned on, it can signal a problem with the switch or the circuit, prompting further investigation and maintenance.
E-Switch Pilot Light Indicator Products
PVL Series Sealed Pilot Lamp Indicator
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The PVL Series pilot lamp indicator offers tamper resistant properties without the actuation function. This anti-vandal indicator provides multiple panel cutout sizes, ranging from 6mm to 25mm in diameter.
Body finish options include stainless steel, nickel plated or black anodized. The PVL Series offers three termination options: solder lug, screw or attached wire leads that are 150mm long. Custom wire length is available upon request. There are multiple lens colors, including RGB, and many illumination voltage options to choose from as well.
L16 Series Illuminated Pilot Indicator
L16 Series illuminated pilot indicators are panel mountable and come with square, rectangle or round pushbutton heads. Neon, incandescent and LED lamps are available, and lamp colors include red, green, yellow or none.
