This document details the specifications, materials, environmental ratings, and ordering information for the NKK YB Series Short Body Pushbuttons.
The NKK YB Series Short Body Pushbuttons are designed with a high-density profile to provide a behind-panel depth of less than one inch. They feature distinctive snap-action contacts for shock resistance and long life, available with full face or spot illumination using incandescent lamps or multi-element LEDs. The switches offer various mounting options, including bushing and snap-in, and are available in square, round, and rectangular shapes.
| Electrical Capacity (Resistive Load) | 3A @ 125V AC or 3A @ 250V AC or 3A @ 30V DC |
|---|---|
| Logic Level Capacity | 0.4VA maximum @ 28V AC/DC maximum |
| Contact Resistance | 50 milliohms maximum for silver; 100 milliohms maximum for gold |
| Insulation Resistance | 200 megohms minimum @ 500V DC |
| Dielectric Strength | 1,000V AC minimum between contacts for 1 minute minimum |
| Mechanical Life (Momentary) | 1,000,000 operations minimum |
| Mechanical Life (Maintained) | 200,000 operations minimum |
| Electrical Life | 100,000 operations minimum |
| Operating Temperature Range (Nonilluminated) | -25°C through +70°C |
| Panel Seal Rating | IP65 of IEC60529 standard |
The nominal operating force is 1.47N for a single pole nonsealed switch.
The nominal operating force is 2.75N for a double pole nonsealed switch.
The maximum mounting torque is 0.785Nm (6.95 lb •in).
Yes, they are UL recognized only when ordered with marking on the switch by adding '/U' or '/CUL' before the first dash in the part number.