Miniature Pushbuttons Series KB Distinctive Characteristics Bright illumination with numerous color variations. Spot illumination available. Square, rectangular, and round shaped caps. Incandescent, LED, and neon lamps. Front panel relamping. Choice of bright or super bright LEDs in red, amber, green, white, and blue. Latchdown feature gives indication of circuit status. Audible and tactile feedback with smooth and responsive operation. Snap-action mechanism for long life. Stainless steel frame on snap-in models has a specially designed projection, which prevents rotation and correctly orients switch in panel. 12mm (.472 ) body diameter. Molded-in terminals lock out flux, dust and other contaminants. 8mm (.315 ) panel thickness capability. Rear panel bushing or snap-in mounting. Optional PCB adaptors in straight and right angle types. Nonilluminated models available and shown in Pushbutton Actual Size section. Matching indicators available and shown in Indicator section. 12-02 NKK Switches email: sales nkkswitches.com Phone (480) 991-0942 Fax (480) 998-1435 www.nkkswitches.comMiniature Pushbuttons Series KB General Specifications Electrical Capacity (Resistive Load) Power Level (code W): 1A 125/250V AC or 1A 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 Insulation Resistance: 1,000 megohms minimum 500V DC Dielectric Strength: For Silver: 1,000V AC minimum between contacts for 1 minute minimum & 1,500V AC minimum between contacts & case for 1 minute minimum For Gold: 750V AC minimum between contacts for 1 minute minimum & 1,500V AC minimum between contacts & case for 1 minute minimum Mechanical Life: 100,000 operations minimum Electrical Life: 50,000 operations minimum for silver 100,000 operations minimum for gold Nominal Operating Force: Single pole 100 ~ 250 grams for maintained & 100 ~ 200 grams for momentary Double pole 150 ~ 350 grams for maintained & 150 ~ 300 grams for momentary Contact Timing: Nonshorting (break-before-make) Travel: 2.2mm (.087 ) pretravel 0.80mm (.031 ) overtravel 3.0mm (.118 ) total travel Materials & Finishes Housing: Polyamide Movable Contactor: Silver for power circuit copper with gold plating for logic level circuit Stationary Contacts: Silver for power circuit copper with gold plating for logic level circuit Housing Base: Polyamide Terminal Base: Polyester Common Terminals: Phosphor bronze with silver flash plating for power circuit Phosphor bronze with gold flash plating for logic level circuit End Terminals: Brass with silver flash plating for power circuit Brass with gold flash plating for logic level circuit Lamp Terminals: Phosphor bronze with nickel flash plating Environmental Data Operating Temp Range: -25C through +50C (-13F through +122F) 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 3 shocks in each direction) Installation Mounting Torque: .78Nm (6.9 lbin) maximum Cap Installation Force: 4.51N (1.0 lbf) maximum downward force on cap Soldering Time & Temperature: 3 seconds 350C or 5 seconds 270C Process Seal: Not available Standards & Certifications Flammability Standards: UL94V-0 housing & base UL Recognized: Single & double pole models recognized at 1A 125/250V AC, 1A 30V DC, & 0.4A 28V DC UL File No. WOYR2.E44145 add/ to end of part number to order UL mark on switch. CSA Certified: Single & double pole models recognized at 1A 125/250V AC, 1A 30V DC, & 0.4VA 28V maximum CSA File No. 023535-0-000 add/ to end of part number to order CSA mark on switch. 12-02 NKK Switches email: sales nkkswitches.com Phone (480) 991-0942 Fax (480) 998-1435 www.nkkswitches.com