Miniature Pushbuttons
Series KB
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W):
Logic Level (code G):
1A @ 125/250V AC or 1A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation of operating range in Supplement section.
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
50 milliohms maximum
1,000 megohms minimum @ 500V DC
1,000V AC minimum between contacts & 1,500 minimum between contacts & case (silver)
for 1 minute minimum;
750V AC minimum between contacts & 1,500 minimum between contacts & case (gold)
for 1 minute minimum;
100,000 operations minimum
50,000 operations minimum for silver; 100,000 operations minimum for gold
Single pole 0.98 ~ 2.45N for maintained & 0.98 ~ 1.96N for momentary;
Double pole 1.47 ~ 3.43N for maintained & 1.47 ~ 2.94N for momentary
Nonshorting (break-before-make)
Pretravel .087” (2.2mm); Overtravel .031” (0.80mm); Total Travel .118” (3.0mm)
Materials & Finishes
Housing:
Movable Contactor:
Stationary Contacts:
Housing Base:
Terminal Base:
Common Terminal:
End Terminals:
Polyamide (UL94V-0)
Silver for power circuit; copper with gold plating for logic level circuit
Silver for power circuit; copper with gold plating for logic level circuit
Polyamide (UL94V-0)
Polyester
Phosphor bronze with silver flash plating for power circuit;
Phosphor bronze with gold flash plating for logic level circuit
Brass with silver flash plating for power circuit;
Brass with gold flash plating for logic level circuit
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
–25°C through +70°C (–13°F through +158°F)
90 ~ 95% humidity for 96 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 3 shocks in each direction)
Installation
Mounting Torque:
Cap Installation Force:
Soldering Time & Temperature:
0.78Nm (6.9 lb
•
in) maximum
4.51N (1.0 lbf) maximum downward force on cap
Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
R
CSA Certified:
UL94V-0 housing & housing base
Single & double pole models recognized at 1A @ 125/250V AC, 1A @ 30V DC, & 0.4A @ 28V DC;
UL File No. WOYR2.E44145; add “/U” to end of part number to order UL mark on switch;
C-UL File No. WOYR8.E44145; add “/C-UL” to end of part number to order C-UL mark on switch
Single & double pole models recognized at 1A @ 125/250V AC, 1A @ 30V DC,
& 0.4VA @ 28V maximum; CSA File No. 023535-0-000;
add “/C” to end of part number to order CSA mark on switch.
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. ]
