Low Profile Pushbuttons
Series UB2
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W):
Logic Level (code G):
5A @ 125/250V AC or 5A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation in Supplement section.
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
50 milliohms maximum for silver; 100 milliohms maximum for gold
200 megohms minimum @ 500V DC
1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
1,000,000 operations minimum for momentary;
200,000 operations minimum for alternate action
10,000 operations minimum for silver;
200,000 operations minimum for gold
Single Pole: 1.90N
Double Pole: 2.55N
Break before make
Pretravel .067” (1.7mm); Overtravel .024” (0.6mm); Total Travel .091” (2.3mm)
Materials & Finishes
Housing/Bezel:
Snap-in Frame:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Terminals:
Base:
Glass fiber reinforced polyamide (UL94V-0)
Stainless steel
Phosphor bronze
Silver alloy or copper with gold plating
Silver alloy or copper with gold plating
Phosphor bronze with silver or gold plating
Glass fiber reinforced liquid crystal polymer (UL94V-0)
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
–25°C through +70°C (–4°F through +158°F)
90 ~ 95% humidity for 240 hours @ 40°C (104°F)
10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning
in 1 minute; 3 right angled directions for 2 hours
50G (490m/s
2
) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
Installation
Processing
Cap Installation Force:
15.0N maximum downward force on cap
Soldering:
Cleaning:
Wave Soldering (PC version): See Profile A in Supplement section.
Manual Soldering: See Profile A in Supplement section.
These devices are not process sealed. Hand clean locally using alcohol based solution.
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
UL94V-0 housing/bezel & base
All single & double pole models recognized at 5A @ 125/250V AC or 0.014A @ 28V DC;
UL File No. WOYR2.E44145 & C-UL File No. WOYR8.E44145;
add “/U” to end of part number to order UL mark on switch & add “/U-C” to end of
part number to order C-UL mark on switch (equivalent to CSA certification).
R
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
NKK [ NIHON KAIHEIKI INDUSTRY CO. LTD. ]
