Rocker Switch Drawing
What are 3 Way Rocker Switches?
A 3 way rocker switch is an electromechanical control component designed with three distinct operational states: ON, OFF, and ON. This specific KCD3 rectangular rocker switch features a SPDT (Single Pole Double Throw) internal structure, allowing users to alternate power between two different circuits or isolate the power completely in the center position. Engineered for precision and reliability, these switches are fundamental in systems requiring multi-mode operation, such as speed selection or directional control.
Product Overview
The FL3-KCD3-0111-13X is a market-universal 3 way rocker switch designed for professional industrial and consumer electronics integration. This KCD3 rectangular model provides a reliable ON-OFF-ON mechanical function, ideal for devices requiring dual-function control. With high-grade certifications including ISO9001, CE, VDE, RoHS, SGS, UL, and IP65, FILN ensures each switch meets rigorous global safety standards. The sleek black plastic finish offers a versatile aesthetic for any panel design, while the snap-in mounting system ensures a secure, tool-less installation in standard 28x11mm cutouts.
Quick Specifications
| Model Number | FL3-KCD3-0111-13X |
| Mounting Dimensions | 28x11 mm / 1.1x0.43 inch |
| Circuit Function | ON-OFF-ON (3-Position) |
| Illumination | Non-Illuminated (Matte Black) |
| Terminal Type | 3-Pin Quick Connect / Spade Pins |
Performance Parameters
| Function | ON-OFF-ON |
| Rated Voltage/Current | 30A 250VAC / 18(12)A 125VAC |
| Initial Contact Resistance | ≤50mΩ |
| Insulated Resistance | ≥100mΩ/500VDC |
| Dielectric Strength | 1500VAC/5mA 60s |
| Endurance (Life Cycle) | 10,000 cycles |
| Ambient Temperature | -25°C to +125°C (40T125) |
| Protection Degree | IP65/IP66 |
| Certifications | ISO9001, CE, VDE, RoHS, SGS, UL |
Component Materials
| Accessories Name | Material |
|---|---|
| Up base / Actuator | ABS Plastic |
| Bottom base | PA66 Nylon |
| Holder / Frame | ABS |
| Terminals / Pin | Brass H62 |
| Contact | AgCdO12 (Silver Alloy) |
| Spring | 72# Carbon Steel |
| Iron Case | 08F Steel |
General Characteristics
| Application Range | General use for KCD3 series rocker switches. |
| Storage Temp | -40°C to +125°C |
| Relative Humidity | 45% ～ 85% |
| Test Pressure | 86 ～ 106Kpa (860 ～ 1060mbar) |
Mechanical and Electrical Property
| Project | Test Condition & Requirement |
|---|---|
| Appearance | No rust, crack or plating defects. Good finishing. |
| Terminal Strength | 80N static load for 60s; No damage or falling off. |
| Welding Heat Resistance | 260±5°C for 3s; No obvious deformation. |
| Mechanical Life | 20,000 operations; 60 cycles/min (No load). |
| Electrical Life | 10,000 operations at rated load. |
Applications of 3 Way Rocker Switches
Due to their intuitive "rocking" motion and high current capacity, these switches are utilized across diverse industries:
- Industrial Machinery: Control panels for packaging machines, conveyors, and small lathes.
- Commercial Equipment: Retail POS systems, vending machines, and industrial coffee brewers.
- Medical Devices: Power management for hospital beds, diagnostic instruments, and sterilizers.
- Transportation: Dashboard controls in automotive RVs, trucks, and marine navigation consoles.
- Home Appliances: Air purifiers, vacuum cleaners, and heating systems.
Step-by-Step Installation Guide
- Panel Cutout: Measure and prepare a rectangular opening of 28x11mm on your panel surface.
- Snap-In Mounting: Align the switch from the front of the panel and press firmly until the dual-side snap-in clips lock the body into place.
- Wiring Connection: Attach the 3-pin wires to the spade terminals at the rear. Ensure the center pin is connected to the common power source.
- Functional Test: Toggle the switch between the two ON positions and the central OFF position to verify circuit integrity.
Complete 3 Pin 3 Way Rocker Switch Wiring Diagram and Guide
A 3 pin rocker switch wiring diagram is vital for projects requiring control over two separate electrical circuits. This specific configuration, commonly found in KCD1 series switches, operates as a Single Pole Double Throw (SPDT) switch with an "On-Off-On" functionality. It allows a single power source to alternate between two different devices or to remain in a central neutral position where both are disconnected.
How to Wire a 3 Pin 3 Way Rocker Switch: Step-by-Step Instructions
Wiring a 3-way non-illuminated switch involves managing a common power input and two independent output loads. Follow these steps for a correct setup:
- 1. Central Power Input (Common Pin): Connect the positive (+) wire from your power supply to the middle pin of the rocker switch. This pin acts as the common terminal that distributes power to the other two pins.
- 2. Device 1 Connection: Connect the bottom pin of the switch to the positive input of your first device (Device 1). In the "Down" position, the circuit to this device is closed.
- 3. Device 2 Connection: Connect the top pin of the switch to the positive input of your second device (Device 2). In the "Up" position, power is redirected here.
- 4. Grounding the Circuit: Connect the negative (-) terminals of both Device 1 and Device 2 directly back to the negative terminal of the power source. As this is a non-illuminated switch, the switch itself does not require a ground connection.
Switch Operation Logic Table
| Switch State | Device 1 Status | Device 2 Status |
|---|---|---|
| UP Position | OFF | ON (Active) |
| Normal (Middle) | OFF (Resting) | OFF (Resting) |
| DOWN Position | ON (Active) | OFF |
Technical Installation Considerations
- On-Off-On Functionality: This 3-pin configuration is unique because the center position acts as a complete "Off" state for both devices, making it perfect for reversing motors or toggling between two different lighting modes.
- KCD1 Series Ratings: Most KCD1 switches are rated for 6A 250VAC or 10A 125VAC. Ensure your load does not exceed these electrical specifications to prevent internal contact welding.
- Wire Termination: For high-current applications, use high-quality female spade connectors. Ensure they are snugly fitted to the 4.8mm or 6.3mm terminals to maintain low resistance and prevent heat buildup.
Figure 1: 3-Pin 3-Way Rocker Switch Connection Schematic
Technical Insights: How Rocker Switches Work
The mechanical principle behind the how rocker switch works involves a spring-loaded fulcrum. When an operator applies pressure to one side of the actuator, an internal movable contact (the "rocker") pivots. In an ON-OFF-ON model, the contact bridges the center pin to one of the outer pins. This design is highly advantageous in industrial settings because it provides tactile feedback and a clear visual indication of the switch's current state, preventing accidental activation or deactivation of critical equipment.
FILN Factory Direct Supply & Customization
As a leading manufacturer of industrial control components, FILN offers unparalleled supply chain advantages:
- NO MOQ: Order exactly what you need.
- Voltage Customization: 5V to 220V.
- Custom Wiring: Any length or connector.
- Global Shipping: Fast logistics from our ISO9001 factory.
Official Website: www.filn.com
Contact Email: inquiry@cnylin.com.cn
Frequently Asked Questions (FAQ)
1. How many pins does the non-lighted 3 way rocker switch have?
The standard KCD3 ON-OFF-ON switch features 3 terminals (pins) at the base to control two circuits and one common input.
2. Can I use these 3 way rocker switches for DC motor direction control?
Yes, an ON-OFF-ON SPDT switch is commonly used in motor control circuits to reverse polarity or switch between forward and reverse modes.
3. What is the maximum current rating for these 3-pin switches?
FILN KCD3 switches are heavy-duty components rated for 30A at 250VAC, making them suitable for high-power industrial equipment.
4. Does this KCD3 model come with a built-in LED indicator?
This specific model is a non-illuminated black plastic switch. However, FILN offers illuminated KCD3 versions in Red, Green, Blue, and White if status lighting is required.
5. Why choose a non-lighted 3-pin rocker switch over an illuminated one?
Non-lighted black switches are more versatile for aesthetic panel integration and do not require a separate ground connection for a lamp, simplifying the wiring process.
6. What materials ensure the longevity of the 3 way switches?
We utilize PA66 Nylon for the base for high temperature resistance and Silver Alloy (AgCdO12) for the contacts to ensure reliable electrical switching over 10,000 cycles.
7. How do I identify the common pin on a 3-pin switch?
In a standard ON-OFF-ON configuration, the center pin is the common terminal where the power supply is connected.
8. Is snap-in mounting secure for high-vibration environments?
Yes, the KCD3 snap-in clips are engineered to provide a high-tension grip against the panel, ensuring the switch remains stable even in industrial machinery applications.
9. Are these switches UL and CE certified for global export?
Yes, all FILN rocker switches carry UL, CE, VDE, and RoHS certifications, meeting the safety requirements for the North American and European markets.
10. Can I customize the wire length for my 3-pin rocker switch order?
Absolutely. FILN specialized in factory-direct customization. We can solder wire harnesses of any length and add specific connectors to your order.
Dear Valued Customers,
At FILN, we specialize in delivering precision-engineered indicator lights, push button switches, and rocker switches tailored to your unique requirements. While our products default to standard voltage ranges (12-24V and 110-220V), we understand that specialized applications demand flexibility.
Need a Custom Voltage Solution? Simply inform us of your desired voltage specifications (e.g., 5V, 48V, or non-standard ranges), and our engineering team will craft a solution within 10-15 business days.
Why Choose FILN for Custom Manufacturing?
✅ Expertise You Can Trust: Over 20 years of experience in industrial-grade electronic component production.
✅ End-to-End Customization: From voltage adjustments to bespoke designs (shape, color, IP rating), we adapt to your needs.
✅ Quality Guaranteed: All custom orders undergo rigorous testing to meet CE/RoHS/IP65 standards.
✅ Scalable Support: Whether prototyping or bulk orders, we ensure seamless delivery.
How It Works
Consultation: Share your technical requirements via email or our contact form.
Design & Approval: Receive 3D models or samples for confirmation.
Production & QC: Precision manufacturing with real-time updates.
Global Shipping: Trackable logistics to your doorstep.
Contact Us Today
Email: inquiry@cnylin.com.cn
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