




Couldn't load pickup availability
Enjoy points to reduce shipping fees
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
A 120V rocker switch is an electrical control component designed to open or close a circuit through a rocking motion. The FL3-KCD4-0324-21 model features a premium stainless steel surface, providing a modern, high-end aesthetic while ensuring superior durability. This KCD4 rocker switch is specifically engineered for 30x22mm panel cutouts, common in industrial machinery and commercial appliances. The stainless steel face is not only fashionable but also incredibly easy to clean and maintain, making it ideal for environments where hygiene and aesthetics are prioritized. With a DPST 4-pin configuration, it provides secure dual-pole switching for 120V or 220V power systems.
The FILN 120V rocker switch is a versatile power control solution certified by ISO9001, CE, VDE, RoHS, SGS, UL, and IP65. Designed for high-performance applications, this waterproof 4 pin rocker switch supports currents up to 30A, making it suitable for heavy-duty industrial DPST power control. The stainless steel surface rocker switch for appliances offers a split-design with an internal frame for enhanced mechanical stability. Whether utilized in outdoor power tools, kitchen equipment, or medical devices, the illuminated KCD4 rocker switch ensures visibility in dark environments through its R/G/Y/B/W LED options. Its snap-in rocker switch installation allows for rapid integration into standard panels.
| Product Model | FL3-KCD4-0324-21 |
| Mounting Cutout | 30mm x 22mm (1.18" x 0.87") |
| Switch Function | ON-OFF / ON-ON |
| LED Colors | Red, Green, Yellow, Blue, White |
| Surface Material | Premium Stainless Steel |
| Wiring Method | 4 Pin Quick Connect Terminals |
| Function Type | Operation Logic | Best Application |
|---|---|---|
| ON-OFF | Latching; stays in position. | Main power control. |
| ON-ON | Latching; alternates between two circuits. | Dual-speed or mode selection. |
| (ON)-OFF | Momentary; springs back to OFF. | Horn or reset button. |
| ON-(OFF) / ON-(ON) | Momentary; springs back to initial state. | Temporary testing or jogging. |
| Rated Voltage | 30A 250VAC / 18(12)A 125VAC (Custom 5V-220V) |
| Contact Resistance | ≤50mΩ |
| Insulation Resistance | ≥100mΩ / 500VDC |
| Dielectric Strength | 1500VAC / 5mA 60s |
| Electrical Life | 10,000 cycles |
| Protection Class | IP65 Waterproof |

| Part Name | Material |
|---|---|
| Surface Plate | High-Grade Stainless Steel |
| Transparent Sheet | Polycarbonate (PC) |
| Up Base / Holder | High-impact ABS |
| Bottom Base | Flame-retardant PA66 |
| Terminals / Pins | Brass H62 with Silver Plating |
| Contact | Silver Alloy AgCdO12 |
| Waterproof Cover | Industrial Silicone Rubber |
The FILN 30A High-Current Rocker Switch has been meticulously engineered for high-power loads and extreme durability. Below is a detailed technical comparison of our upgraded model:
| Core Component | Upgrade Description | Performance Benefit |
|---|---|---|
| Housing Structure | Split Black Housing Design | Superior structural stability and enhanced sealing for easier installation. |
| Waterproof Design | Optimized Frame Surface | Fits panels more securely, significantly improving waterproof ratings. |
| Illumination | Premium LED Lamp | Longer lifespan and uniform illumination compared to neon lamps. |
| Contact Material | Silver Contacts + 1mm Thick Brass | Rated for true 30A loads; provides higher electrical endurance. |
| Inner Holder | New Larger Contact Holder | Reduces heat generation during high-current operation. |
| Material Grade | Imported PA Nylon Material | High-strength flame retardancy; resists cracking in high heat. |
We recommend the 30A Upgraded Model for heavy-duty applications:
Industrial Control Panels
Portable Power Stations
Marine Dashboard Systems
Performance Automotive Upgrades
FILN's KCD4 30x22mm rocker switch is designed for premium performance. The stainless steel surface offers a significant upgrade over standard plastic switches: it is resistant to corrosion, easy to clean, and provides a sleek, modern finish that enhances the value of any device. Furthermore, the split-design with an internal frame provides structural "exoskeleton" support, preventing the switch body from cracking or losing its tension in tight panel cutouts. This internal frame also ensures the IP65 rubber seal remains compressed and effective throughout the switch's lifespan.
Because of its 30A high current rocker switch rating and waterproof outdoor rocker switch capabilities, this KCD4 model is used globally in:
A 4 pin rocker switch wiring diagram is essential for managing higher-current loads. These switches are typically Double Pole Single Throw (DPST). Depending on your needs, choose between two wiring options:
The LED only illuminates when the switch is toggled to the "ON" position.
The LED remains on as long as the power source is connected (Switch Finder Mode).
FILN offers professional manufacturing with No MOQ and Fast Global Shipping.
Official Website: www.filn.com | Contact Us: inquiry@cnylin.com.cn

1. Does the 4-pin 120V rocker switch include an LED indicator?
Yes, it features a built-in R/G/Y/B/W LED for visibility.
2. What is the benefit of the stainless steel surface?
It is fashionable, easy to clean, and provides industrial-grade durability.
3. Can this switch handle 30A current?
Yes, the KCD4 model is rated for high current loads up to 30A at 120V/250V AC.
4. Is the rocker switch waterproof for outdoor use?
Yes, it is rated IP65 against water and dust ingress.
5. What is a 4-pin DPST configuration?
It stands for Double Pole Single Throw, controlling both live and neutral wires simultaneously.
6. How do I install the snap-in switch?
Simply press it into a 30x22mm hole until the side clips lock.
7. What certifications does the FILN KCD4 switch have?
It is UL, CE, VDE, RoHS, and SGS certified.
8. Can I customize the wire length?
Yes, we provide full customization for wire lengths and connectors.
9. Is this switch suitable for kitchen appliances?
Absolutely. The stainless steel face is perfect for ovens and air fryers.
10. Does FILN provide free samples for B2B clients?
Yes, contact inquiry@cnylin.com.cn to request samples for your project.
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.
✅ 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.
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.
Email: inquiry@cnylin.com.cn
Good solid switch for workshop machinery. Stainless steel button looks sharp and doesn't scratch easily. Bright blue LED ring makes power status clear. We specifically chose this FILN 120V 30A rocker switch for our heavy-duty RV power distribution board. Stainless steel finish holds up very well.
Application: food processing plant conveyor control system. Bought 10 of these for a custom bench power supply rig. They switch reliably under load, no heating up noticed at 20A continuous draw. Waterproof gasket fits snugly against the front panel. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Super fast installation, robust 30A contacts, and the green LED ring is extremely visible across the factory floor. Will buy again for future equipment builds. We specifically chose this FILN 120V 30A rocker switch for our workshop dust collector remote activation panel. Stainless steel finish holds up very well.
Application: industrial PLC automation cabinet. Overall a very well-made switch. The stainless steel surface looks high end and the 30A capacity handles our 120V motor startup surge without issue. The snap-in tabs hold very tight—just make sure your sheet metal panel cutout is precisely 30x22mm so you don't scratch the powder coating when inserting. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
As an electrical engineer building custom automation cabinets, switch reliability is critical. FILN's 30A KCD4 rocker switch impressed me during load testing. Held steady at 28A continuous resistive load without any significant temperature rise across the terminals. The stainless bezel adds a professional touch that our clients love. We specifically chose this FILN 120V 30A rocker switch for our custom powder coating oven control box. Stainless steel finish holds up very well.
Application: marine 12V/120V switchboard panel. Replaced the factory switches on our marine power distribution panels. The internal split waterproof seal is legitimate—no moisture ingress during washdowns or heavy humidity. 4-pin quick connect terminals made wiring smooth with standard 1/4 inch female spade connectors. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
We needed a heavy-duty 120V rocker switch for a commercial coffee roaster that runs 10 hours a day. Plastic switches kept melting or cracking from heat and high current. This FILN KCD4 switch with its stainless steel rocker top and internal waterproof frame solved the issue instantly. The tactile switch action feels precise and heavy-duty. We specifically chose this FILN 120V 30A rocker switch for our CNC router main power panel. Stainless steel finish holds up very well.
Application: commercial espresso machine modification. Installed these on our CNC control cabinets last month. The 30A rating gives us plenty of headroom for high load switching. The stainless steel faceplate looks fantastic against our brushed aluminum chassis, and the snap-in dimensions (30x22mm) were spot on. The blue ring light is bright without being blinding in dark shop conditions. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
The switch feels heavy duty and the green ring light works perfectly at 120VAC. The 4-pin spade terminals are thick and take standard female connectors snugly. Only minor complaint is the terminal print on the housing is small, but pinout is easy to test with a multimeter. We specifically chose this FILN 120V 30A rocker switch for our custom Off-Grid solar inverter bypass panel. Stainless steel finish holds up very well.
Application: woodworking shop main table saw disconnect. Fits 30mm x 22mm standard cutout like a glove. 4 pin layout simple to wire up. Very happy with purchase. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Used on a high-amperage RV inverter switchboard setup. Stainless steel button feels super clean and industrial. White ring illumination looks modern. We specifically chose this FILN 120V 30A rocker switch for our agricultural automated feeder system panel. Stainless steel finish holds up very well.
Application: commercial pressure washer control station. Decent switch for our industrial HVAC test setup. The internal frame structure prevents flex when pressing hard. Shipping took about 6 days to US midwest, which was acceptable. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Replaced generic switches in our workshop dust collection control unit. The FILN switch feels night and day better—clicks firmly into ON position, no arc flash visible through the housing, ring light is vibrant. We specifically chose this FILN 120V 30A rocker switch for our industrial 3D printer enclosure power cut. Stainless steel finish holds up very well.
Application: laser engraver auxiliary power switch. Awesome quality switch. Easy snap-in mounting into panel cutouts. Ring light wire tabs are clearly marked. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
The switch feels heavy duty and the green ring light works perfectly at 120VAC. The 4-pin spade terminals are thick and take standard female connectors snugly. Only minor complaint is the terminal print on the housing is small, but pinout is easy to test with a multimeter. We specifically chose this FILN 120V 30A rocker switch for our microbrewery pump & heating element control switch. Stainless steel finish holds up very well.
Application: lab testing bench variable AC power switch. The 30A rating isn't just marketing hype. We bench tested this at 30A 120VAC for 200 cycles. Terminal resistance remained low, no melting or housing deformation. The internal support frame makes a huge difference compared to generic plastic KCD4s. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Used on an outdoor generator transfer box. Waterproofing has held up through severe storm rain without any issues. Very solid construction for the price. We specifically chose this FILN 120V 30A rocker switch for our HVAC blower motor manual control panel. Stainless steel finish holds up very well.
Application: autobody shop paint booth ventilation system. Solid switch! The bright red ring light instantly signals status across a noisy workshop floor. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Good solid switch for workshop machinery. Stainless steel button looks sharp and doesn't scratch easily. Bright blue LED ring makes power status clear. We specifically chose this FILN 120V 30A rocker switch for our commercial coffee roaster heating control. Stainless steel finish holds up very well.
Application: hydraulic press safety cutoff unit. FILN makes great switches. We ordered a sample batch of 20 with white LED illumination. Delivery was quick, documentation was clear, and testing proved they hold up to frequent cycling under inductive loads. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Exact fit for 30x22mm panel cutout. Solid click feel on switching. Stainless steel construction feels far superior to standard nylon switches. We specifically chose this FILN 120V 30A rocker switch for our heavy-duty RV power distribution board. Stainless steel finish holds up very well.
Application: food processing plant conveyor control system. Overall a very well-made switch. The stainless steel surface looks high end and the 30A capacity handles our 120V motor startup surge without issue. The snap-in tabs hold very tight—just make sure your sheet metal panel cutout is precisely 30x22mm so you don't scratch the powder coating when inserting. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
Super fast installation, robust 30A contacts, and the green LED ring is extremely visible across the factory floor. Will buy again for future equipment builds. We specifically chose this FILN 120V 30A rocker switch for our workshop dust collector remote activation panel. Stainless steel finish holds up very well.
Application: industrial PLC automation cabinet. Great product. The red LED halo ring turns on cleanly with 120V power. The snap-in tabs click securely into 1.5mm sheet metal without wobble. Highly durable construction. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
As an electrical engineer building custom automation cabinets, switch reliability is critical. FILN's 30A KCD4 rocker switch impressed me during load testing. Held steady at 28A continuous resistive load without any significant temperature rise across the terminals. The stainless bezel adds a professional touch that our clients love. We specifically chose this FILN 120V 30A rocker switch for our custom powder coating oven control box. Stainless steel finish holds up very well.
Application: marine 12V/120V switchboard panel. Replaced the factory switches on our marine power distribution panels. The internal split waterproof seal is legitimate—no moisture ingress during washdowns or heavy humidity. 4-pin quick connect terminals made wiring smooth with standard 1/4 inch female spade connectors. The 30A current handling on 120V circuit gives great peace of mind. FILN KCD4 frame internal seal is top notch.
We needed a heavy-duty 120V rocker switch for a commercial coffee roaster that runs 10 hours a day. Plastic switches kept melting or cracking from heat and high current. This FILN KCD4 switch with its stainless steel rocker top and internal waterproof frame solved the issue instantly. The tactile switch action feels precise and heavy-duty. We specifically chose this FILN 120V 30A rocker switch for our CNC router main power panel. Stainless steel finish holds up very well.
Receive our latest updates about our products and promotions.
Thanks for subscribing!
This email has been registered!