Series LB Standard Size 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) Note: Find additional explanation of operating range in Supplement section. Other Ratings Contact Resistance: 50 milliohms maximum for silver 100 milliohms maximum for gold D Insulation Resistance: 200 megohms minimum 500V DC Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum 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: 4.41N Contact Timing: Nonshorting (break-before-make) Travel: Pretravel .059 (1.5mm) Overtravel .059 (1.5mm) Total Travel .118 (3.0mm) Materials & Finishes Housing: Glass fiber reinforced polyamide (UL94V-0) Snap-in Frame: Stainless steel Movable Contact: Silver alloy or copper with gold plating Stationary Contacts: Silver alloy or copper with gold plating Base: Liquid crystal polymer (UL94V-0) Switch Terminals: Phosphor bronze with silver or gold plating Lamp Terminals: Brass with silver plating Environmental Data Operating Temperature Range: 25C through +50C (13F through +122F) for Illuminated 25C through +70C (13F through +158F) for Nonilluminated Note: When used with a polyvinyl chloride splash cover, the lowest limit is 0C (32F) Humidity: 90 ~ 95% humidity for 96 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: Not available for snap-in see next section for panel seal. Installation Cap Installation Force: 3.92N maximum downward force on cap Quick Connect Force: 52.95N maximum downward force on connector Soldering Time & Temperature: Manual Soldering: See Profile A in Supplement section. Standards & Certifications Flammability Standards: UL94V-0 housing & base UL: File No. E44145 - Recognized only when ordered with marking on switch. Add /U or /CUL before rfi st dash in part number to order UL recognized switch. All models recognized at 3A 125V or 250V AC or 0.4VA 28V AC/DC maximum. CSA: File No. 023535 0 000 - Certified only when ordered with marking on switch. Add /C before rfi st dash in part number to order CSA certified switch. All models certified at 3A 125V or 250V AC or 0.4VA 28V AC/DC maximum. D48 www.nkkswitches.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesStandard Size Pushbuttons Series LB Distinctive Characteristics Carefully designed light diffusion and filtering system produces bright, full surface illumination with front panel relamping. Spot illumination available in single and bicolor LEDs. Choice of super bright LEDs in white, green, and blue in addition to standard or bright red, amber, and green LEDs. D Stainless steel clips provide secure mounting with a wide range of panel thicknesses. Latchdown feature gives indication of circuit status. Audible and tactile feedback with smooth and responsive operation. Snap-action contact mechanism gives long electrical life and sensitivity of actuation. Combination solder lug and .110 quick connect terminals are epoxy sealed to prevent entry of flux, dust, and other contaminants. Panel sealed model meets IP65 of IEC60529 specifications (similar to NEMA 4 & 13). Compact switch design minimizes behind panel depth. Matching indicators available. Actual Size Snap-in Mount Page D48 Panel Seal Page D59 www.nkkswitches.com D49 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles