19mm Key Push Button Switch 2 Position 3-Pin Metal Switch FILN

Button Switch DrawingProduct Overview

The FILN 19mm key push button switch (FLM19-KJ-1) is a high-performance industrial control component designed for security and precision. Built with a 304 stainless steel shell, this 3-pin key operated push button provides a robust alternative to standard switches by requiring a physical key for operation. Unlike traditional momentary or latching buttons, this 2-position key selector switch ensures authorized access for critical systems. Certified with ISO9001, CE, VDE, RoHS, SGS, and UL, it offers an IP65 waterproof rating, making it ideal for industrial-panel-mount-key-switch applications in automation, marine systems, and electrical cabinets. As a leading factory, FILN provides high-security metal key switch solutions with full customization support.

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Quick Specifications

Model Number	FLM19-KJ-1
Mounting Hole Size	19mm (0.75 inch)
Operation Function	2-Position Key Operated (ON/OFF)
LED Lighting	None (Non-Illuminated)
Head Type	Flat Head with Keyhole
Terminal Type	3-Pin Solder/Plug-in Terminal

Performance Parameters

Rated Voltage	36V DC / 250V AC
Rated Current	5A
Insulation Resistance	≥ 1000MΩ
Contact Resistance	< 50mΩ
Dielectric Strength	1800V
Certifications	ISO9001, CE, VDE, RoHS, SGS, UL

Component Materials

Button/Shell	304 Stainless Steel / H59 Brass
Terminals	H62 Copper Alloy
Base	PA66+GF20% Flame Retardant Nylon
Contacts	Silver Alloy AgCdO12
Sealing	Silicone Waterproof Ring

General Characteristics

Operating Temperature	-25°C to +85°C
Protection Level	IP65, IK08
Mechanical Life	500,000 cycles
Electrical Life	50,000 - 100,000 cycles

Key Features

• Enhanced Security: Unlike standard buttons, the stainless-steel-rotary-key-switch requires a key, preventing unauthorized tampering.
• Extreme Durability: With IP65 & IK08 ratings, it withstands moisture, dust, and physical impact.
• High Load Capacity: Supports up to 5A 250V, allowing direct control of heavy equipment without extra relays.
• Premium Materials: The silver contact (AgCdO12) ensures low resistance and long-term conductivity.
• Compact Design: A short-body structure (approx. 26.5mm) makes it perfect for metal-key-switch-for-control-panel setups with limited space.

Applications

This waterproof-key-actuated-switch-ip65 is widely used in:

• Industrial control panels and CNC machines.
• Security systems and emergency power cut-offs.
• Medical equipment and food processing machinery.
• Automotive and marine dashboard controls.

Installation Guide

1. Drill a 19mm diameter hole in your control panel.
2. Place the silicone waterproof ring onto the switch body.
3. Insert the switch through the panel hole from the front.
4. Secure the switch by tightening the M19 metal nut from the back.
5. Connect the 3-pin terminals according to your circuit requirements.

3-PIN Key Switch Wiring Methods

A 3-PIN switch consists of a Common (C), Normally Open (NO), and Normally Closed (NC) terminal. Use these connections to control the circuit state via the key.

• C (Common): Power input terminal.
• NO (Normally Open): Connects only when the key is turned to the ON position.
• NC (Normally Closed): Disconnects when the key is turned.

Method 1: Normally Open (NO) Connection

Logic: Device stays OFF by default and turns ON only when the key is rotated.

• Wiring: Power (+) to C, Device (+) to NO.
• Applications: Machinery start, secure ignition.

Method 2: Normally Closed (NC) Connection

Logic: Device stays ON by default and turns OFF when the key is rotated.

• Wiring: Power (+) to C, Device (+) to NC.
• Applications: Emergency stops, security lockout.

Industry Knowledge

1. What is a 19mm Key Push Button Switch?

A 19mm-key-lock-switch-wiring setup is used for high-security environments. It functions as a rotary selector but requires a physical key. This is essential for industrial-panel-mount-key-switch needs where only authorized personnel should toggle power to hazardous or sensitive machinery.

2. Comparison: Key Switch vs. Regular Push Button

Feature	Standard Push Button	FILN Key Switch
Security	Low (Anyone can press)	High (Requires physical key)
Functions	Momentary/Latching	2-Position (ON/OFF)
Installation	Threaded Mount	Threaded Mount (M19)
Durability	Standard	Enhanced Mechanical Stability

Factory Direct Supply

FILN is a professional manufacturer offering high-security metal key switch solutions with the following benefits:

• No MOQ (Start with 1 piece)
• Fast Global Shipping
• CE / RoHS / UL Certified
• Voltage Customization
• Wire Length Customization
• Connector Customization

Get Free Samples Now

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

Frequently Asked Questions (FAQ)

Q1: Is this 19mm key switch waterproof?
Yes, it has an IP65 rating, making it a waterproof-key-actuated-switch-ip65 suitable for outdoor or wet environments. Q2: Does the 3-pin version come with an LED indicator?
This specific model (FLM19-KJ-1) is non-illuminated. If you need a 4-pin or 5-pin LED version, please contact our factory. Q3: What material is used for the keys?
The keys are typically made of durable brass with a nickel coating for corrosion resistance. Q4: Can I use this for 220V AC systems?
Absolutely. It is rated for up to 250V AC with a 5A load capacity. Q5: Can the key be removed in both positions?
Standard models allow key removal in both the ON and OFF positions for security. Q6: How many pins does this key switch have?
It features a 19mm-3-pin-terminal-key-switch configuration (Common, NO, NC). Q7: Is the 304 stainless steel shell corrosion resistant?
Yes, the stainless-steel-rotary-key-switch is perfect for medical and marine industries. Q8: Can FILN customize the wire harness?
Yes, we offer wire length and connector customization for easy 19mm-key-lock-switch-wiring. Q9: What is the mechanical life of this switch?
It is designed for up to 500,000 cycles, ensuring long-term industrial reliability. Q10: Does this switch have a momentary function?
No, this model is a 2-position fixed switch. For momentary key switches, please inquire about custom production.