Datasheet

Series UB
Low Profile Pushbutton Switches
NKK Switches • email: [e-mail] • Phone [phone] • Fax [phone] www.nkkswitches.com
GENERAL SPECIFICATIONS
Electrical Capacity (Resistive Load)
Power Level (code W): 5A @ 125/250V AC or 5A @ 30V DC
Logic Level (code G): 0.4VA maximum @ 28V AC/DC maximum
Note: See Supplement Index (page Z1) to find explanation of operating range.
Other Ratings
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;
1,500V AC minimum between contacts & case
Mechanical Life: 1,000,000 operations minimum for momentary;
200,000 operations minimum for alternate action
Electrical Life: 10,000 operations minimum for silver;
100,000 operations minimum for silver with resistive load of 3A @ 125V AC
200,000 operations minimum for gold
Nominal Operating Force: Single Pole: 160 grams for Square & 194 grams for Rectangular
Double Pole: 260 grams for Square & 316 grams for Rectangular
Contact Timing: Break before make
Travel: Square: 1.7mm (.067") pretravel; 0.6mm (.024") overtravel; 2.3mm (.091") total
Rectangular: 1.7mm (.067") pretravel; 0.7mm (.028") overtravel; 2.4mm (.095") total
Materials & Finishes
Housing/Bezel: Glass fiber reinforced polyamide
Snap-in Frame: Stainless steel
Movable Contactor: Phosphor bronze
Movable Contacts: Silver alloy or copper with gold plating over nickel
Stationary Contacts: Silver alloy or copper with gold plating over nickel
Switch Terminals: Phosphor bronze with silver or gold plating
Lamp Terminals: Brass with silver plating
Base: Glass fiber reinforced liquid crystal polymer
Environmental Data
Operating Temp Range: Illuminated: -25°C through +50°C (-13°F through +122°F)
Nonilluminated: -20°C through +70°C (-4°F through +158°F)
Humidity: 90 ~ 95% humidity for 96 hours @ 40°C (104°F)
Vibration: 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
Shock: 50g acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
Installation
Cap Installation Force: .77 kg (1.69 lb)
Soldering Time & Temperature: 3 seconds @ 350°C or 5 seconds @ 270°C
Process Seal: Not available
Standards & Certifications
Flammability Standards: UL94V-0 housing/bezel of GFR polyamide & base of GFR liquid crystal polymer
UL Recognized: All single & double pole models recognized at 5A @ 125/250V AC or
0.014A @ 28V DC; UL File No. E44145
CSA Certified: All single & double pole models certified at 5A @ 125/250V AC or 5A @ 30V DC or
0.4VA maximum @ 28V AC/DC maximum; CSA File Nos. LR23535
8-01