Why the 16mm Ultra-Short Momentary Switch Belongs in Your Next BOM
Why the 16mm Ultra-Short Momentary Switch Belongs in Your Next BOMWhen your control panel depth is limited but field reliability cannot be compromised, the 16mm ultra-short momentary push button switch solves both problems. With a body length significantly shorter than standard switches, this component fits into thin enclosures, handheld devices, and space-restricted machinery — while maintaining IP67 waterproofing and anti-vandal durability.
This post covers everything engineering and procurement teams need to know: momentary action, mechanical fit, environmental ratings, and LED customization.
Core Product Positioning
| Parameter | Description |
|---|---|
| Mounting hole diameter | 16 mm (round) |
| Switch function | Momentary (spring return) |
| Waterproof rating | IP67 (button end) |
| Ambient temperature | -30 °C … +85 °C |
| Housing materials | SUS304 / Brass nickel-plated / Aluminum alloy anodized |
| Additional material option | PC & SUS316 |
| Button styles | Flat head / High head |
| LED colors | Red, green, yellow, blue, white (dual-color, tri-color, multi-color customizable) |
Momentary function explained: The circuit is closed only while the button is being pressed. When released, it returns to its original (OFF) state. This is the opposite of latching/self-locking.
Key Technical Specifications for Engineers
| Parameter | Value |
|---|---|
| Switching voltage | 1.5 V – 24 V DC |
| Rated heating current (Ith) | 50 mA @ 36 V DC |
| Load type | Inductive loads (relays, solenoids) |
| Contact resistance | Available upon request |
| Electrical life | Available upon request |
| Operating force | Approx. 2.5 × 4 N |
| Button travel | Short travel (typical for momentary) |
| Dielectric strength | Consult datasheet |
| Compressive strength | Consult datasheet |
⚠️ Low-power signal switching only. For high-power AC loads, always use an external relay or contactor.
Why “Ultra-Short” Matters for B-Side Design
Standard 16mm anti-vandal switches often have long rear bodies, making them impossible to fit into:
Thin industrial HMI panels (<25 mm internal depth)
Elevator floor selection panels
Medical hand controls
Public access kiosks with space constraints
Portable test & measurement equipment
The ultra-short version reduces rear protrusion significantly, giving mechanical engineers more freedom in enclosure design and thermal management.
Environmental & Mechanical Advantages
1. IP67 at the button end
Dust-tight and protected against temporary immersion (1 meter for 30 minutes). Suitable for washdown environments, outdoor kiosks, marine applications, and food processing equipment.
2. Wide temperature range: -30 °C to +85 °C
Operates reliably in cold storage, desert solar installations, unheated factories, and outdoor telecom cabinets.
3. Anti-vandal metal construction
Choose from stainless steel SUS304, nickel-plated brass, or anodized aluminum alloy. Also available in PC & SUS316 for specific corrosion or insulation requirements.
4. Momentary action
Perfect for door release buttons, horn switches, reset buttons, test points, and any application where you need a temporary signal (not a maintained state).
LED Illumination Options
This switch series supports integrated LED illumination for clear status feedback:
Supported colors: Red, green, yellow, blue, white
Advanced options: Two-color, three-color, and multi-color (customizable)
Lamp bead voltage & current – specify according to driving circuit
Typical use cases for illuminated momentary switches:
Green – “Press to start”
Red – “Emergency / stop” (momentary)
Blue/White – aesthetic design for modern equipment
Typical B2B / Industrial Applications
| Industry | Typical Use Case |
|---|---|
| Industrial automation | Machine reset buttons, cycle start |
| Access control | Door release (momentary) |
| EV charging stations | Wake-up or start button |
| Medical devices | Hand control momentary inputs |
| Public kiosks | Selection / confirmation buttons |
| Transportation (buses/trains) | Passenger request stop |
| Outdoor security systems | Test or reset inputs |
Ordering & Design-In Notes
Mounting hole: 16 mm (confirm mechanical drawing for exact tolerance)
Pin style: Refer to pinout diagram (COM+, COM-, etc.)
Dielectric strength & compressive strength – available from factory upon request
Electrical life & contact resistance – load-dependent; consult factory for curves
Manufactured by: Wuhan Sukehe Intelligent Technology Co., Ltd.
Model series reference: RUGSWT (ultra-short momentary variant)
Final Recommendation for Procurement & Engineering Teams
If your panel depth is limited and your application requires a momentary, IP67, anti-vandal push button with LED options, the 16mm ultra-short series is a reliable, space-saving alternative to standard switches.
Request the full mechanical datasheet to verify:
Exact rear body length
Pin configuration
LED electrical parameters
Contact rating for your specific load (inductive/resistive)
Samples or technical inquiry?
Contact the factory directly for sample requests, custom LED configurations, and bulk pricing.
