Series YB2 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): 0.4VA maximum 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A 20mV ~ 28V) 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 for 1 minute minimum D 1,500V AC minimum between contacts & case for 1 minute minimum Mechanical Life: 1,000,000 operations minimum for momentary circuit 200,000 operations minimum for maintained circuit Electrical Life: 100,000 operations minimum Nominal Operating Force: Single pole: 1.5N Double pole: 3.0N Contact Timing: Nonshorting (break-before-make) Travel: Pretravel .059 (1.5mm) Overtravel .059 (1.5mm) Total Travel .118 (3.0mm) Materials & Finishes Bezel: Black: Glass fiber reinforced polyamide (UL94V-0) Chrome plated: Chrome plating over ABS resin (UL94V-2) Housing: Glass fiber reinforced polyamide (UL94V-0) Base: Glass fiber reinforced polyamide (UL94V-0) Movable Contactor: Phosphor bronze with silver or gold plating Movable Contacts: Silver alloy or copper with gold plating Stationary Contacts: Silver alloy or copper with gold plating Switch Terminals: Phosphor bronze with tin plating Lamp Terminals: Phosphor bronze with tin plating Environmental Data Operating Temperature Range: 25C through +50C (13F through +122F) for Illuminated 25C through +70C (13F through +158F) for Nonilluminated Humidity: 90 ~ 95% humidity for 240 hours 40C (104F) 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 2 Shock: 50G (490m/s ) acceleration (tested in 6 right angled directions, with 5 shocks in each direction) Sealing: IP65 of IEC60529 standard Installation Mounting Torque: 0.785Nm (6.95 lbin) maximum Soldering Time & Temperature: Manual Soldering: See Profile A in Supplement section. Standards & Certifications Flammability Standards: UL94V-0 housing, base & black bezel UL: File No. E44145 - Recognized only when ordered with marking on switch. Add /CUL before first dash in part number to order cULus marking on switch. All solder lug models recognized at 3A 125/250V AC or 0.4VA 28V AC/DC maximum. D118 www.nkkswitches.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesPanel Seal Pushbuttons Series YB2 Distinctive Characteristics 24mm square and 25mm diameter pushbuttons with the shortest above-panel dimension (1.8mm) in the industry for splashproof design. Meets IP65 of IEC60529 standards (similar to NEMA 4 and 13), providing dust tight and splashproof panel seal protection. Tamper resistant 18mm square and 19mm diameter actuators. D Short body of .965 (24.5mm) conserves behind-panel space. Distinctive long stroke and light touch actuation for clear indication of circuit status. Choice of cap colors includes clear, brushed chrome, red, green, or yellow, for enhanced panel appearance. Metallic silver cap option has bright ring illumination (round only). Unbrushed chrome has the look of stainless steel when non- illuminated, and LED color or legends when illuminated. Brilliant illumination with multiple LED colors. Bezel color options in black or brushed chrome. Brushed chrome option is lighter weight than actual metal switches due to metal plating on resin. Available in momentary and alternate action with latchdown. Crisp actuation and clear circuit status provided by snap-action contact mechanism. Arc barrier protects against crossover. Combination solder lug and .110 quick connect terminals. Terminals Actual Size (Round) are epoxy sealed to lock out flux, dust, solvents, and other contaminants, as well as to secure terminals and improve contact stability. Custom legends on actuator or inserts. www.nkkswitches.com D119 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles