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Series YB2
24mm Square Panel Seal Pushbuttons
General Specifications
Electrical Capacity (Resistive Load)
Power Level (silver): 3A @ 125V AC or 3A @ 250V AC or 3A @ 30V DC
Logic Level (gold):
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
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 circuit
200,000 operations minimum for maintained circuit
100,000 operations minimum
Single pole: 1.5N
Double pole: 3.0N
Nonshorting (break-before-make)
Pretravel .059” (1.5mm); Overtravel .059” (1.5mm); Total Travel .118” (3.0mm)
.098” (2.5mm) in Latchdown Position
Materials & Finishes
Bezel:
Black: Glass fiber reinforced polyamide (UL94V-0); Silver: Polycarbonate
Housing:
Base:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Switch Terminals:
Lamp Terminals:
Environmental Data
Operating Temperature Range:
Humidity:
Vibration:
Shock:
Sealing:
Glass fiber reinforced polyamide (UL94V-0)
Diallyl phthalate resin (UL94V-0)
Phosphor bronze with silver or gold plating
Phosphor bronze & silver alloy
Silver alloy or copper with gold plating
Phosphor bronze with tin plating
Phosphor bronze with tin plating
–25°C through +50°C (–13°F through +122°F) for Illuminated
–25°C through +70°C (–13°F through +158°F) for Nonilluminated
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 5 shocks in each direction)
IP65 of IEC60529 standard
Installation
Mounting Torque:
0.785Nm (6.95 lb ? in) maximum
Soldering Time & Temperature:
Standards & Certifications
Flammability Standards:
UL:
2
Manual Soldering: 390°C maximum for 4 seconds maximum
UL94V-0 housing, base & black or metallic silver bezel
File No. E44145
All solder lug models recognized at 3A @ 125/250V AC or 0.4VA @ 28V AC/DC maximum.
Add “/CUL” to end of part number to order cULus mark on switch.
www.nkk.com
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