Button Switch Drawing
Product Overview
The 4 pin push button switch (Model: FLM19-FJ-2-E) is a high-performance industrial control component engineered for durability and precision. Manufactured by FILN, a leader in the switch industry, this 19mm waterproof metal switch features a premium stainless steel housing and a vibrant LED ring indicator. With certifications including ISO9001, CE, VDE, RoHS, SGS, UL, and IP65, it is designed for rigorous environments such as CNC machines, marine systems, and automation equipment. This momentary push button switch ensures reliable circuit control with silver contacts for superior conductivity. Whether you need a 12V LED button or a 220V industrial switch, our 4-pin terminal design provides a secure and efficient connection for various electrical control panels.
Quick Specifications
| Model Number | FLM19-FJ-2-E |
|---|---|
| Mounting Hole Size | 19mm (0.75 inch) |
| Operation Function | Momentary (Self-Reset) |
| LED Color | Red / Green / Yellow / Blue / White (Bi-color/Tri-color Customization) |
| Button Head Shape | Flat Head |
| Terminal Type | 4-Pin Plug-in Terminal (2.8x0.5mm) |
Performance Parameters
| Rated Voltage | 36V DC / 250V AC |
|---|---|
| Rated Current | 5A DC / 5A AC |
| Rated Power | 180W (DC) / 1250W (AC) |
| Insulation Resistance | ≥ 1000MΩ |
| Dielectric Strength | 1800V |
| Contact Resistance | < 50mΩ |
| LED Voltage Range | 3V - 220V (12-24V / 110-220V Standard) |
| Certifications | ISO9001, CE, VDE, RoHS, SGS, UL, IP65 |
Component Materials
| Button / Actuator | 304 Stainless Steel / 6063 Aluminum Alloy |
|---|---|
| Shell / Housing | H59 Brass / 304 Stainless Steel |
| Internal Base | PA66+GF20% Flame Retardant Nylon |
| Contacts | Silver Alloy (AgCdO12) |
| Pins | H62 Brass Alloy |
| Sealing Ring | SIL Silicone (Waterproof) |
General Characteristics
| Operating Temperature | -25°C to +85°C |
|---|---|
| Protection Level | IP65 (Waterproof), IK08 (Vandal-Proof) |
| Mechanical Life | 500,000 Cycles |
| Electrical Life | 100,000 Cycles (250V/3A) |
LED Optical/Electrical Characteristics
| Forward Current | 20mA (Typical) |
|---|---|
| Light Intensity | 1000 mcd |
| Color Temperature (White) | 8400K |
| Luminous Flux | 4.8 lm |
| Max Soldering Temp | 260°C (within 5s) |
Key Features
- Superior Durability: Rated IP65 and IK08, this 19mm metal switch is dust-proof, waterproof, and resistant to impacts, making it ideal for harsh industrial environments.
- High Load Capacity: Supports up to 5A 250V AC/DC, allowing direct control of high-power equipment without the need for intermediate relays.
- Premium Material Selection: The 304 stainless steel shell offers exceptional corrosion resistance, suitable for medical and marine engineering.
- Silver Contact Technology: Utilizes AgCdO12 silver contacts to ensure low contact resistance (< 50mΩ) and minimize electrical arcing.
- Ultra-Compact Design: With a total length of approximately 26.5mm, it is perfect for space-constrained control panels and handheld devices.
Industrial Applications
This round push button switch is widely utilized across various sectors:
- Industrial control panels
- CNC machines
- Automation equipment
- Electrical cabinets
- Marine systems
- Medical devices
- Security systems
- Access control buttons
Installation Steps
- Drill a 19mm diameter mounting hole in the control panel.
- Insert the 4 pin button switch through the hole from the front.
- Slide the waterproof O-ring and the metal hex nut from the back of the panel.
- Tighten the hex nut to secure the switch body firmly to the panel.
- Connect the wiring terminals according to the desired LED mode (Always ON or Synchronized).
4 Pin Push Button Switch Wiring Diagram
A 4-PIN switch consists of two parts: Switch Contacts (to control the device) and LED Terminals (marked with + and -). Below are two ways to wire the LED indicator.
- Horizontal Pins: The switch mechanism (Power In / Load Out).
- Vertical Pins (+ / -): The LED indicator light terminals.
Method 1: LED Synchronized with Device (On when Active)
Logic: The button light only turns ON when the device is running. It serves as a "Status Indicator."
- Wiring: Connect LED (+) to the Output side of the switch. LED (-) to Power Negative.
- Applications: Power start buttons, car fog lights, industrial machinery.
- Benefit: Saves power; provides visual feedback that the system is active.
Figure 1: LED turns ON only when button is pressed
Method 2: LED Always ON (Backlight Mode)
Logic: The button light stays ON constantly as long as there is power, regardless of the button position.
- Wiring: Connect LED (+) directly to the Power Positive. LED (-) to Power Negative.
- Applications: Dark environments, hallway switches, standby power indicators.
- Benefit: Allows you to find the switch easily in total darkness.
Figure 2: LED stays ON constantly (Backlight)
| Mode | LED Status (Idle) | LED Status (Pressed) |
|---|---|---|
| Sync (Status) | OFF | ON |
| Always ON (Backlight) | ON | ON |
Industry Knowledge
What is a 4-Pin Push Button Switch?
A 4-pin push button switch is a fundamental component in industrial electronics. It separates the switching circuit (2 pins) from the indicator circuit (2 pins for the LED). This design allows for independent control of the light, which can act as a status indicator or a constant backlight. In FILN products, these switches are often built with metal shells for enhanced RFI shielding and mechanical strength.
Latching vs. Momentary Function
| Feature | Momentary (Self-Reset) | Latching (Self-Locking) |
|---|---|---|
| Operation | Springs back when released | Stays in place until pressed again |
| Best For | PC Power, Horns, Doorbells | Main Power, Light Switches |
LED Color Meanings
- Red: Emergency, Stop, Error.
- Green: Normal operation, Start, Safety.
- Yellow: Warning, Standby, Pre-heating.
- Blue: Specific functions, Manual mode.
- White: High-visibility neutral indicator.
Terminal Type Comparison
| Type | Advantages | Best Use Case |
|---|---|---|
| Pin Terminal (4-Pin) | Fast assembly with connectors | Mass production/Control panels |
| Screw Terminal | Very secure, no soldering needed | Field maintenance/Thick cables |
| Pre-Wired | Plug-and-play, saves time | DIY/Prototyping |
FILN Factory Direct Advantage
As a specialized manufacturer, FILN provides flexible solutions for global B2B industrial sourcing:
- ✅ No MOQ: Small orders welcome for testing and prototyping.
- ✅ Fast Delivery: Global shipping with short lead times.
- ✅ Customization: Voltage (3V-220V), Wire length, and Connectors.
- ✅ Certified Quality: Full CE/RoHS/UL compliance.
Official Website: www.filn.com
Contact Email: inquiry@cnylin.com.cn
View All: All Push Button Switches
Frequently Asked Questions
Q1: Is the 19mm 4-pin switch waterproof?
A: Yes, it is IP65 rated, making it resistant to water splashes and dust, suitable for outdoor use.
Q2: Can I use this 4-pin LED button for a 110V circuit?
A: Yes, we offer LED voltage customization from 3V to 220V AC/DC. Please select the 110V version when ordering.
Q3: What is the difference between a 4-pin and a 5-pin switch?
A: A 4-pin switch has one set of normally open contacts + 2 LED pins. A 5-pin switch typically offers NO/NC (Common, Normally Open, Normally Closed) plus 2 LED pins.
Q4: Do you support custom wire harness for these switches?
A: Yes, FILN provides wire length and connector customization to meet your specific assembly requirements.
Q5: Can I get a free sample for testing?
A: Absolutely! Please contact our sales team at inquiry@cnylin.com.cn for sample requests.
Q6: What is the material of the metal shell?
A: The standard material is 304 stainless steel, but we also offer H59 brass and aluminum options.
Q7: Is the LED ring always illuminated?
A: It depends on your wiring. You can wire it to be "Always ON" or "Only when pressed."
Q8: How many cycles will this switch last?
A: It has a mechanical life of 500,000 cycles and an electrical life of 100,000 cycles at 3A load.
Q9: What is the mounting hole size required?
A: It requires a standard 19mm (approx. 3/4 inch) diameter round hole.
Q10: Does FILN provide bulk pricing for industrial buyers?
A: Yes, we specialize in B2B supply and provide competitive tiered pricing for factory orders.
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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