Latching Push Button Switch 20A High Current Stainless Steel 4-Pin Wire Lead for Industrial Control FILN

Button Switch DrawingProduct Overview

The FLM19-FW-1-E is a premium 19mm latching push button switch designed for heavy-duty industrial applications requiring a high current 20A capacity. Manufactured by FILN, a leading factory in switch technology, this button features a robust stainless steel or black zinc-aluminum alloy shell with a brilliant LED ring light. With certifications including ISO9001, CE, VDE, RoHS, SGS, UL, and IP65, it ensures maximum safety and reliability. Ideal for automation equipment, marine systems, and electrical cabinets, this 4-pin wire lead push button switch offers pre-wired convenience for rapid installation and superior performance in dark environments.

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Quick Specifications

Model Number	FLM19-FW-1-E
Mounting Size	19mm / 0.75 inch
Operation Function	Latching (Self-Locking) / Momentary (Self-Reset)
LED Color	Red, Green, Yellow, Blue, White (Dual & Tri-color Customization)
Button Head Style	Flat Head
Termination Style	4-Pin Pre-wired Leads (2.8x0.5mm Pins inside)

Performance Parameters

Rated Voltage	36V DC / 250V AC (Custom 12V, 24V, 110V, 220V)
Rated Current	20A High Current (Heavy Duty)
Insulation Resistance	≥ 1000MΩ
Dielectric Strength	1800V AC
Certifications	UL, CE, VDE, RoHS, SGS, IP65

Component Materials

Button Actuator	304 Stainless Steel / 6063 Aluminum Alloy
Shell Body	Nickel-plated Brass / Stainless Steel / Black Aluminum
Base Material	Flame Retardant PA66+GF20% Nylon
Contacts	Silver Alloy (AgCdO12) for High Conductivity

Key Features

• 20A High Current Handling: Unlike standard 3A/5A buttons, this model handles up to 20A, allowing direct control of high-power motors and heaters without extra relays.
• Superior IP65 & IK08 Protection: Waterproof, dustproof, and vandal-resistant, making it perfect for marine and outdoor industrial environments.
• Pre-wired Convenience: Equipped with high-quality wire leads for rapid plug-and-play installation, reducing labor costs and wiring errors.
• Vibrant LED Ring: Provides clear visual status in low-light conditions. Available in 5 colors, each serving different system indicators.

Industrial Applications

Our buttons are widely used in CNC machines, medical devices, automotive dashboards, and marine control panels. Any equipment requiring a reliable waterproof momentary push button switch 19mm or latching variant will benefit from FILN's robust design.

Installation Guide

1. Drill a 19mm diameter hole in your control panel.
2. Insert the button through the front of the panel.
3. Secure the switch from behind using the provided metal hex nut.
4. Connect the pre-wired 4-pin leads to your circuit following the wiring diagram.

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 Latching Push Button Switch?

A latching push button switch (self-locking) stays in the "ON" position after being pressed. It requires a second press to return to the "OFF" position. This is ideal for power switches on machinery. Conversely, a momentary switch only stays "ON" as long as your finger is pressing it (like a doorbell).

Feature	Latching (Self-Lock)	Momentary (Self-Reset)
Action	Stays Pressed	Springs Back
Best For	Main Power, Lights	Horns, Ignitions, Starters

Factory Direct Supply - FILN

As an original manufacturer, FILN offers unmatched customization and support:

• NO MOQ (Sample orders welcome)
• Fast Global Shipping
• Voltage & Color Customization
• Custom Wire Length & Connectors

Request Free Samples

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

Frequently Asked Questions (FAQ)

1. Is this 19mm latching push button switch 20A safe for high power?
Yes, the FLM19-FW-1-E uses reinforced silver contacts and heavy-duty internal components to safely handle 20A without overheating. 2. What do the different LED colors represent?
- Red: Stop/Emergency/Error.
- Green: Start/Normal Operation.
- Blue: Standby/Ready.
- Yellow/White: Warning or General Illumination. 3. Can I get a 4-pin wire lead push button switch with custom wire lengths?
Absolutely! FILN specializes in customization. We can provide any wire length and specific connectors (like JST or Molex). 4. Does the switch come in different finishes?
Yes, we offer 304 Stainless Steel for rust resistance and Black Zinc-Aluminum alloy for a sleek aesthetic. 5. Is the led illuminated metal push button switch waterproof?
Yes, it is IP65 rated, meaning it is protected against low-pressure water jets from any direction.