The Ultimate Guide to the 20A Push Button Switch: The FILN FLM19 Series
In the world of advanced machinery, industrial automation, and high-performance equipment, success is measured by uptime, reliability, and safety. A single point of failure can cascade into catastrophic losses, tarnishing a brand’s reputation and eroding customer trust. Astonishingly, that single point of failure is often a component that costs only a few dollars: the push button switch.
Standard switches, when subjected to the relentless demands of high-current applications, become ticking time bombs. The invisible threat of electrical arcing, the slow burn of thermal degradation, and the mechanical stress of constant use lead to premature failure. This isn’t just an inconvenience; it’s a significant business risk. It means unscheduled downtime on a factory floor, a critical malfunction in a medical device, or a dead-in-the-water commercial vehicle. The cost of replacing a faulty switch is dwarfed by the cost of the disruption it causes.
This is why choosing the right high-current push button switch is not a component-level decision; it’s a strategic one. It’s an investment in your product’s reliability and your company’s reputation. Recognizing this critical need, FILN, a leader in component engineering, has developed the
FLM19-FW-6-EX000, a 20A Heavy-Duty Push Button Switch designed to thrive where others fail. This guide will explore not just the technical specifications of this exceptional component, but the tangible business value it delivers to engineers, designers, and procurement managers alike.

A Deep Dive for Engineers: Performance & Reliability by Design
Engineers are the architects of reliability. You require components that not only meet but exceed specifications, providing a wide margin of safety and predictable performance. The FILN FLM19 series was built from the ground up to satisfy the most demanding technical requirements.
True 20A Performance & Superior Contact Material
The “20A” rating on the FLM19-FW-6-EX000 is not a theoretical peak; it is a sustained, real-world capability. It is rated to handle a full.
20A at both 250V AC and 36V DC. This robust performance is made possible by its core component:
AgCdO12 (Silver Cadmium Oxide) contacts.
Unlike standard brass or copper alloys that are susceptible to electrical arcing and welding at high currents, AgCdO12 offers superior conductivity and exceptional resistance to arc erosion. This means less heat buildup, a cleaner break of the circuit, and a drastic reduction in contact degradation over time. This is further evidenced by its extremely low contact resistance of <50mΩ, ensuring maximum power transmission and minimal energy loss as heat. The switch can handle a massive.
5000W of AC power or 720W of DC power.
Unmatched Electrical & Mechanical Endurance
A switch’s value is directly tied to its lifespan. The FLM19 series boasts a remarkable mechanical life of 500,000 cycles, ensuring its physical integrity long after other switches would have failed.
More importantly, its electrical life is specified with transparent, load-dependent data, allowing for precise reliability forecasting:
- 30,000 cycles at a full 20A/250V load
- 60,000 cycles at a 16A/250V load
- 100,000 cycles at a 10A/250V load
- This level of detail gives you the confidence to integrate the FLM19 into mission-critical applications, knowing it has been tested and proven to endure.

Robust Construction from Premium Materials
The switch’s durability extends to its physical construction. Every material is chosen for longevity and performance in industrial settings:
- Housing and Actuator: Machined from 304 Stainless Steel or 6063 Aluminum Alloy, providing excellent resistance to corrosion and physical impact.
- Sleeve and Nut: Options for H59 Brass offer great workability and durability for secure mounting.
- Base: Molded from PA66+GF20% flame-retardant nylon, enhancing safety in case of a catastrophic electrical event.
- Wiring: Comes with 1.0mm² – 2.0mm² high-temperature Teflon insulated wire, capable of handling the heat generated by sustained high-current loads without melting or degrading.
- Sealing: A SIL Silicone rubber ring provides the waterproof seal, maintaining its elasticity and effectiveness across a wide temperature range.
Uncompromising Protection: IP67 & IK09 Ratings
The FLM19 is designed to be deployed in the most challenging environments. Its head is sealed to IP67 standards, signifying it is completely dust-tight and can withstand immersion in water up to 1 meter for 30 minutes. This makes it ideal for marine applications, outdoor equipment, food processing machinery, and any device that requires regular cleaning and disinfection.
Furthermore, it carries an IK09 rating for impact protection. This means the switch is highly vandal-resistant and can withstand significant impacts, making it a perfect fit for public-facing kiosks, access control panels, and heavy machinery where accidental impacts are common.
Wide Operating Parameters
An industrial component must be stable across a wide range of conditions. The FLM19 operates flawlessly in temperatures ranging from -25°C to +85°C. Its insulation is equally robust, with an insulation resistance of ≥1000MΩ and the ability to withstand a dielectric voltage of 2500V, ensuring safety and preventing shorts. The integrated LED has its own broad voltage range, customizable from 3V to 220V.
For Procurement & Sourcing Managers: A Partnership in Reliability
Your role is to secure the best value for your company and ensure a stable, reliable supply chain. The FILN FLM19 series is not just a superior component; it’s a smarter business decision.
Maximizing ROI by Reducing Total Cost of Ownership (TCO)
The initial purchase price of a component is only a fraction of its true cost. A cheaper, less reliable switch can lead to exorbitant downstream costs from warranty claims, field service calls, product recalls, and reputational damage.
The FLM19 is designed to lower TCO. Its 500,000-cycle mechanical life and proven electrical endurance mean it is a “fit-and-forget” component. By engineering out the need for replacement, you eliminate future maintenance costs and, most importantly, protect your customers from the high cost of equipment downtime. This long-term reliability is a powerful selling point for your own products, translating into higher customer satisfaction and a stronger bottom line.
Supply Chain Stability with a Vertically Integrated Manufacturer
The FLM19 is manufactured by Yueqing Yulin Electrical Co., Ltd, an established company with deep expertise in switch design and production. As a direct manufacturer, FILN controls the entire production process, from raw material sourcing to final assembly and testing under strict ISO9001 quality standards. This vertical integration means greater control over quality, more stable lead times, and the ability to work directly with the engineering source. It eliminates the risks associated with multi-layered distribution and provides you with a reliable, long-term supply chain partner.
For Product Designers & Innovators: Aesthetics Meets Functionality
A great product must not only work flawlessly but also look and feel exceptional. The control panel is the primary point of user interaction, and the quality of its components speaks volumes about the quality of the entire product.
Elegant Industrial Design & Superior Haptics
The FLM19 features a sleek, low-profile flat head design with a clear ring or dot illuminable LED. Its 19mm mounting size is a popular standard, making it easy to integrate into new or existing designs. The precision-machined stainless steel or aluminum finish provides a premium look and feel that enhances the perceived value of your equipment. The crisp, tactile feedback of the switch mechanism communicates quality and reliability with every press.
Unleash Creativity with Full OEM/ODM Customization
Your vision shouldn’t be limited by off-the-shelf components. FILN is a true manufacturing partner, offering extensive customization options to perfectly match your design language:
- Actuator & Body Material: Choose between 304 Stainless Steel for maximum durability or 6063 Aluminum Alloy for different aesthetic finishes.
- LED Illumination: Select from a wide palette of colors including Red, Blue, Green, Yellow, and White. Customize the LED operating voltage to match your system’s power rails perfectly.
- Functionality: Specify either a momentary (press and hold) or latching (press on, press off) mechanism to suit your application’s logic.
- Wiring & Connectors: The switch can be supplied with custom wire lengths and terminated with specific connectors to streamline your assembly process and reduce labor costs.

Proven in the Field: Real-World Applications
The robust design of the FILN FLM19 makes it the ideal choice for a wide range of demanding sectors:
- Industrial Automation: Used in CNC machine control panels, conveyor system start/stop stations, and motor control cabinets where high inrush currents are common.
- Heavy-Duty & Commercial Vehicles: Deployed in construction equipment, agricultural machinery, and marine vessels as master power switches or for controlling high-load accessories like winches and hydraulic pumps.
- Energy & Power Systems: Integrated into EV charging stations, solar power inverters, and battery backup systems (UPS) where reliability is paramount.
- Medical & Laboratory Equipment: Its high reliability and quality materials make it suitable for non-critical control functions on large diagnostic equipment where uptime is essential.
- Public Access & Security: The vandal-proof IK09 rating makes it a perfect fit for outdoor access control panels, ticketing kiosks, and public elevators.
Your Next Steps to a More Reliable Product
Integrating a superior component is the fastest way to upgrade your product’s reliability and market standing. We invite you to experience the FILN difference firsthand.
- For In-Depth Technical Review: Our engineering team encourages you to scrutinize the data. Download the complete technical specification sheet to see the full reliability test reports and performance curves.
- For Project Evaluation & Prototyping: We believe in proving our quality. Contact our solutions consultants to discuss your specific application. We will provide expert advice and can arrange for free samples for you to conduct your own rigorous testing.
Choosing the FILN FLM19 20A push button switch is more than a component upgrade. It’s a strategic decision to build more robust, reliable, and valuable products. It’s a commitment to your customers and a testament to your brand’s dedication to quality.