Crafted from premium stainless steel or nickel-plated brass, this 19mm mounting hole push button delivers a robust switching solution rated for 3A at 250V AC. Engineered for demanding environments, its all-metal body resists corrosion, impact, and vibration while maintaining a crisp actuation feel across a rated mechanical life of over 500,000 cycles. The compact 19mm panel cutout makes it ideal for control panels, industrial machinery, automotive dashboards, marine equipment, and custom electronics where space and reliability matter.
| Parameter | Specification |
|---|---|
| Mounting Hole Diameter | 19 mm |
| Rated Current / Voltage | 3A 250V AC (resistive load) |
| Dielectric Strength | 1500V AC for 1 minute |
| Contact Resistance | ≤50 mΩ (initial) |
| Insulation Resistance | ≥100 MΩ at 500V DC |
| Switch Operation | Momentary (NO) or Latching (1NO1NC) |
| Contact Material | Silver alloy, gold-plated option available |
| Actuator Material | Stainless steel or chrome-plated brass |
| Body Material | Stainless steel or nickel-plated brass |
| LED Voltage (if illuminated) | 3V, 6V, 12V, 24V, 110V, 220V AC/DC |
| Panel Thickness | 1 - 10 mm |
| Ingress Protection | IP65, IP67 (front panel mounted) |
| Operating Temperature | -25°C to +85°C |
| Mechanical Life | ≥500,000 cycles |
| Electrical Life | ≥50,000 cycles (full load) |
| Termination | Solder lugs or screw terminals |
| Certifications | CE, RoHS, UL listed (select models) |
The standard momentary version uses normally-open contacts: pressing the button closes the circuit, releasing opens it. The latching variant provides a push-on, push-off mechanism with a single pole double throw (1NO1NC) arrangement for more complex control logic. For illuminated models, the LED circuit is independent, requiring a separate power supply matching the specified LED voltage. Always refer to the pinout diagram included with each order to correctly identify common (C), normally open (NO), normally closed (NC), and LED anode/cathode terminals.
Drill or punch a clean 19mm diameter hole in a panel between 1mm and 10mm thickness. Slide the silicone O-ring onto the switch bushing, insert the switch from the front, and secure with the supplied hex nut and lock washer from the rear. Tighten to a torque of 0.5-1.0 N·m to avoid damaging the terminals. For outdoor or washdown environments, apply the front gasket and ensure the panel surface is flat and clean to maintain IP67 sealing. Connect wiring according to the supplied diagram, soldering to lugs at temperatures not exceeding 350°C for 3 seconds, or torque screw terminals to 0.4 N·m.
When specifying a 19mm 3A metal push button switch, select the switch action (momentary or latching), ring or dot illumination color, and LED voltage. Example part number format: PB19-M-SS-R-12V denotes a 19mm momentary push button with stainless steel body, red ring LED, and 12V illumination. Custom engraving, alternative thread lengths, and gold-plated contacts for dry circuit applications are available on request. Bulk quantities ship with individually sealed packaging to preserve contact integrity.
