Key facts
- Brand
- NKK
- Model
- UB2
- Industry
- Industrial
- Documents
- 2
- Languages
- ZH
- Last added
- 2012-01-07
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NKK UB2 Series Thin Flat Button Switch User Manual
The NKK UB2 series thin flat button switch manual provides detailed electrical and mechanical specifications, environmental limits, and certification information. It includes data on contact resistance, insulation strength, mechanical and electrical life, and operating forces for both single‑pole and double‑pole versions.
Installation guidelines cover mounting force, soldering methods, cleaning procedures, and optional accessories. The document also lists ordering codes, LED options, and printable areas for custom branding. This manual is written in Chinese.
NKK UB2 specifications
| Rated current | 5 A at 125/250 V AC or 5 A at 30 V DC |
|---|---|
| Maximum power rating | 0.4 VA at up to 28 V AC/DC |
| Contact resistance (silver) | ≤ 50 mΩ |
| Contact resistance (gold) | ≤ 100 mΩ |
| Insulation resistance | ≥ 200 MΩ at 500 V DC |
| Insulation strength (contacts) | ≥ 1 000 V AC for 1 min |
| Insulation strength (to housing) | ≥ 1 500 V AC for 1 min |
| Mechanical life (momentary) | ≥ 1 000 000 operations |
| Operating force (single pole) | 1.90 N |
| Operating temperature range | –25 °C to +50 °C |
All NKK UB2 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the rated current for the UB2 L82 switch?
The UB2 L82 switch is rated for 5 A at 125/250 V AC or 5 A at 30 V DC.
What are the environmental temperature limits for the UB2 series?
The switches operate from –25 °C up to +50 °C.
What is the maximum current rating for the UB2 switch?
The UB2 switch is rated for 5 A at 125/250 V AC or 5 A at 30 V DC.
What are the contact resistance values for silver and gold contacts?
Silver contacts have a maximum resistance of 50 mΩ, while gold contacts have a maximum of 100 mΩ.