On Off Rocker Switch 28x11mm KCD3 3-Pin Illuminated Waterproof Rocker Switch FILN

Rocker Switch Drawing

What is an ON OFF Rocker Switch?

An on off rocker switch is a standard electromechanical component used to control the flow of electricity by pivoting back and forth between two states. The KCD3 model is a rectangular-faced switch designed for snap-in mounting, featuring a 3-pin configuration that supports internal illumination for status feedback in dark or low-visibility industrial environments.

Product Overview

The FL3-KCD3-0111-11N is a high-performance on off rocker switch engineered for reliability across global power standards (5V to 220V). Manufactured by FILN, this switch carries prestigious certifications including ISO9001, CE, VDE, RoHS, SGS, UL, and IP65. Designed for heavy-duty applications in kitchen appliances, medical devices, and industrial control panels, it features a 3-pin terminal system for easy wiring and high-visibility LED indicators available in Red, Green, Yellow, Blue, and White. Its robust ABS and PA66 housing ensures mechanical longevity exceeding 10,000 cycles, making it the preferred choice for B2B procurement and system integration.

VIEW ALL ROCKER SWITCH PRODUCTS

Quick Specifications

Model Number	FL3-KCD3-0111-11N
Mounting Hole Size	28mm x 11mm (1.1" x 0.43")
Circuit Function	ON-OFF
LED Colors	Red, Green, Yellow, Blue, White
Actuator Shape	Rectangular (KCD3 Standard)
Wiring Method	3-Pin Quick Connect Terminals (Spade)

Performance Parameters

Parameter	Rating / Value
Function	ON-OFF (SPST Illuminated)
Rated Voltage	30A 250VAC / 18(12)A 125VAC
Contact Resistance	≤ 50mΩ
Insulation Resistance	≥ 100mΩ / 500VDC
Dielectric Strength	1500VAC / 5mA 60s
Electrical Life	10,000 Cycles
Operating Temperature	-40°C to +125°C (40T125)
Protection Level	IP65 / IP66
Certifications	UL, VDE, CE, RoHS, ISO9001

Component Materials

Accessory Name	Material Specification
Transparent Sheet / Actuator	Polycarbonate (PC)
Up Base / Holder	Flame Retardant ABS
Bottom Base	High-Temp Nylon PA66
Terminals / Pins	H62 Brass (Silver/Tin Plated)
Internal Contacts	Silver Alloy AgCdO12
Light Source	Long-life LED / Neon Lamp

General Characteristics

Application	General use for KCD4/KCD3 series rocker switches.
Operating Temp	-40°C ～ +125°C
Humidity	45% ～ 85% RH
Test Conditions	Ambient: 5-35°C; Pressure: 86-106Kpa

Detailed Technical Behavior

Project	Condition & Requirement
Mechanical Life	20,000 operations (60 cycles/min)
Electrical Life	10,000 operations at rated load
Solderability	235±5°C for 3s; >90% coverage
Dielectric Strength	1500VAC/60S; No breakdown
Weather Resistance	72h at 125°C; 96h at 95% humidity

Industrial and Consumer Applications

• Household Appliances: Coffee machines, air fryers, water dispensers, and vacuum cleaners.
• Office Equipment: Printers, shredders, and Power Distribution Units (PDU).
• Industrial Control: Distribution boxes, testing instruments, and packaging machinery.
• Medical Devices: Centrifuges, nebulizers, and diagnostic imaging power controls.
• Transportation: RV lighting, marine navigation lights (IP65 models), and dashboard controls.

Installation Guide

1. Panel Preparation: Cut a rectangular hole measuring 28mm x 11mm in your mounting surface.
2. Wiring: Connect your Power Line to the middle pin, Load to the bottom pin, and Ground/Neutral to the top gold pin for illumination.
3. Snap-In Mounting: Align the switch and press it into the cutout from the front of the panel until the side clips lock.
4. Testing: Flip the switch to the ON position; the internal LED should illuminate, and the device should power on.

Detailed 3 Pin Illuminated Rocker Switch Wiring Diagram and Connection Guide

A 3 pin illuminated rocker switch wiring diagram is a fundamental resource for technical personnel designing circuits that require visual status feedback. Unlike standard non-lighted models, an illuminated rocker switch features a built-in lamp that provides instant confirmation of the circuit's state. This guide provides the precise wiring schematic and technical logic required to integrate these components into your power systems.

How to Wire a 3 Pin Illuminated Rocker Switch: Connection Steps

To ensure the internal LED or neon lamp functions correctly alongside your device, follow this specific terminal configuration:

• 1. Power Input (Line Terminal): Connect the positive (+) wire from your power supply to the middle pin of the switch. This terminal acts as the common entry point for the current.
• 2. Load Connection (Device Terminal): Connect the bottom pin to the positive input of your device (e.g., a motor, lamp, or industrial component). When the switch is engaged, current is bridged from the middle pin to this terminal.
• 3. Ground Connection (Lamp Terminal): Connect the top pin (often gold-colored) directly to the negative (-) terminal of the power source. This dedicated connection completes the circuit for the internal light. Without this ground wire, the switch will toggle the device but will not illuminate.

Switch Operation and LED Logic

Switch State	Device Status	Internal LED Status
Normal (Off)	OFF (Open Circuit)	OFF (Dark)
Press (On)	ON (Closed Circuit)	ON (Illuminated)

Technical Considerations and Precautions

• Voltage Specificity: Illuminated switches are rated for specific voltages (e.g., 12V DC, 110V AC, or 220V AC). Connecting a low-voltage DC LED switch to high-voltage AC will result in immediate component failure.
• Terminal Identification: Always identify the ground pin (usually brass or gold) before applying power. Incorrectly swapping the positive and ground terminals can lead to a short circuit when the switch is flipped to the "On" position.
• Current Capacity: Verify that the switch’s rated amperage (e.g., 15A 250VAC) is higher than the maximum current draw of your device to prevent terminal overheating or melting.
• Reliable Termination: Utilize high-quality insulated spade connectors or proper soldering to maintain a low-resistance connection, ensuring long-term electrical stability.

Figure 1: Standard Connection Schematic for a 3-Pin Illuminated Rocker Switch

Industry Knowledge: How It Works

The how rocker switch works question is best explained through its internal mechanics. When the rocker is pressed, an internal spring-loaded "teeter-totter" mechanism moves a movable contact plate against a stationary terminal. In an illuminated version, the switch includes a small LED or neon lamp connected between the output terminal and a third ground pin. This ensures the light only turns on when the circuit is closed (ON position), providing a visual safety signal for high-voltage systems.

FILN Factory Direct Supply

FILN is a specialized manufacturer offering comprehensive customization and wholesale solutions for electrical control components.

• No Minimum Order Quantity (MOQ): Supporting small prototyping and large production runs.
• Rapid Lead Times: Global shipping from our ISO9001 certified facility.
• Customization: Voltage levels, wire lengths, and custom connectors available upon request.

REQUEST FREE SAMPLES

Official Website: www.filn.com
Contact Us: [email protected]

Frequently Asked Questions

1. What is a 3-pin illuminated rocker switch?
A 3-pin illuminated rocker switch is an ON-OFF control device that includes an internal LED or neon light for status indication.

2. How do you wire a KCD3 on off rocker switch with light?
Connect power to the center pin, the load to the bottom pin, and the neutral/ground wire to the top gold-colored pin.

3. Can I use a 220V rocker switch for 12V DC?
The switch will toggle power, but the 220V lamp will not light up. For 12V systems, select a switch with a 12V rated LED.

4. What is the benefit of the KCD3 rectangular design?
It offers a larger surface area for easier operation and a standard mounting size (28x11mm) that fits most industrial panels.

5. How long does the LED last?
Our industrial-grade LEDs are rated for up to 50,000 hours of illumination, outlasting the mechanical components of the switch.

6. Is it easy to install?
Yes, it uses a snap-in mounting method. Simply push the switch into the pre-cut hole, and the side clips will secure it automatically.

7. What materials are used in the construction?
We use PA66 for the base (heat resistance), ABS for the actuator, and silver-cadmium oxide for the contacts to ensure high conductivity.

8. Does FILN offer customized wiring?
Yes, we can provide switches with pre-installed wires, heat-shrink tubing, and various terminal connectors.

9. Are these switches waterproof?
When used with a transparent silicone cover, they reach IP65 protection, making them resistant to dust and water splashes.

10. Where is this switch commonly used?
You will find them in everything from home coffee makers and power strips to industrial control panels and medical equipment.