Discover our 16mm self-locking metal push button switch. Waterproof IP67, 5A 250VAC rating, 1NO1NC contacts, screw terminals. Ideal for doorbells, car horns, and industrial control.

Introduction: The Need for a Positive Action Switch

In many control applications, a momentary switch—one that only activates while being pressed—is not enough. Sometimes, you need a switch that stays in its new state until pressed again, providing a definitive, latching action. This “self-locking” or “maintained” function is crucial for applications like master power switches, mode selection, and on/off toggling.

Our 16mm Self-Locking Metal Push Button Switch is engineered for exactly these scenarios. Combining a robust stainless steel build with a reliable IP67 waterproof seal, this switch delivers unwavering performance in demanding environments, from factory floors to vehicle engine bays.

Product Overview: Instant Action, Lasting Performance

This switch is defined by its self-locking (maintained) mechanism. A single press closes the circuit and keeps it closed; the next press opens it. With a 16mm mounting hole and a flat head design, it offers a low-profile, industrial-grade interface. The absence of an LED (Without Light) makes it perfect for applications where visual distraction is unnecessary or power consumption must be minimized.

Key Features & Technical Advantages

• Self-Locking (Maintained) Mechanism:

  • Benefit: Provides a definitive on/off state without the need to hold the button down. This is ideal for functions like a main power switch, a permanent alarm silence, or a mode selector.

• Versatile 1NO1NC Contact Configuration:

  • Benefit: Features both one Normally Open (1NO) and one Normally Closed (1NC) circuit. This offers incredible wiring flexibility, allowing it to both start one process and stop another simultaneously, perfect for complex control logic.

• IP67 Waterproof Protection:

  • Benefit: Completely sealed against dust and immersion in water up to 1 meter for 30 minutes. This makes the switch resilient against rain, splashes, and wash-downs, ensuring reliability in outdoor or damp industrial environments.

• Rugged Stainless Steel Construction:

  • Benefit: The metal housing provides superior resistance to corrosion, impact, and wear, guaranteeing a long operational life even in harsh conditions.

• Secure Screw Terminals:

  • Benefit: Screw terminals ensure a strong, reliable, and vibration-resistant electrical connection, which is critical for applications in vehicles (car horns) or machinery where wire pull-out is a concern.

• Robust Electrical Rating (5A @ 250VAC):

  • Benefit: With a capacity of 5A, this switch can comfortably handle the load of typical doorbells, car horns, solenoids, and many other industrial control devices directly, without requiring a relay.

Technical Specifications at a Glance

• Switch Function: Self-Locking (Maintained)

• Mounting Diameter: 16mm

• Contact Configuration: 1NO + 1NC

• Rated Load: 5A, 250VAC

• Housing Material: Stainless Steel

• Terminal Type: Screw Terminal

• IP Rating: IP67 (Waterproof and Dustproof)

• Illumination: No

Ideal Applications & Use Cases

This switch is uniquely suited for a wide range of latching control functions:

• Industrial Control: Master power switches for machines, mode selection buttons, control panel on/off switches.

• Automotive & Marine: Car horn button, aftermarket accessory switch (e.g., for lights, winches), bilge pump manual override.

• Security & Access Control: Doorbell switch for gates and entrances, alarm system arming/disarming button.

• Public Infrastructure: Control buttons for public equipment that requires a maintained state, resistant to vandalism and weather.

Solving Key Design Challenges

• Eliminates the Need for External Latching Circuits: The built-in self-locking mechanism simplifies your control panel design by removing the requirement for additional relays or electronic circuits to maintain state.

• Ensures Operation in Harsh Conditions: The combination of stainless steel and IP67 rating directly addresses failure points caused by moisture, dust, and physical abuse.

• Provides a Secure Connection: Screw terminals prevent wires from coming loose due to vibration, a common issue in automotive and machinery applications.

Conclusion: The Definitive Switch for Positive Action Control

For designers and engineers who need a durable, reliable, and straightforward self-locking switch, this 16mm metal push button is the optimal solution. It delivers critical functionality with the ruggedness required to perform in the real world.

Ready to Integrate This Reliable Switch into Your Design?
Contact us today for datasheets, competitive pricing, and samples. Let us help you build a more robust and reliable product.