Overview
The R16-503A series is a reliable 16mm latching On & Off pushbutton switch designed for control panels, automation equipment, DIY electronics, and embedded applications. Built with a smooth actuation feel and long service life, it performs consistently even under demanding environmental conditions.
Two versions are available:
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R16-503AD – includes a 3V LED indicator with 4-pin output (2 switch pins + 2 LED pins)
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R16-503A – a non-illuminated model with a simple 2-pin switch configuration
Both variants maintain low contact resistance, strong insulation performance, and are rated for 3A at 250V AC. Their wide operating temperature range (−40°C to +80°C) ensures dependable operation across industrial and outdoor environments.
Specification
Technical details for R16-503A/AD 16mm Round Panel Mount Momentary Pushbutton.
| Specification | R16-503AD (With LED) | R16-503A (No LED) |
|---|---|---|
| Illumination | Yes | No |
| Button Type | Latching On & Off Pushbutton Switch | |
| Mounting Hole Size | 16 mm | |
| Pin Count | 4 Pins (2 switch + 2 LED) | 2 Pins (switch only) |
| Electrical Rating | 3A / 250V AC | |
| LED Voltage | 3V DC | — |
| Contact Resistance | ≤ 50 mΩ | |
| Insulation Resistance | ≥ 100 MΩ | |
| Mechanical Life | ≥ 50,000 cycles | |
| Electrical Life | ≥ 10,000 cycles | |
| Operating Temperature | −40°C to +80°C | |
Dimensions
Dimensions for R16-503A Latching On & Off Pushbutton Switch.
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