WT21S NKK Switches

Series WT Environmentally Sealed Toggles A General Specifications Electrical Capacity (Resistive Load) Power Level: 10A 125V AC or 6A 250V AC or 10A 30V DC Other Ratings Contact Resistance: 10 milliohms maximum for solder lug & screw terminal models 30 milliohms maximum for wire lead terminal models Insulation Resistance: 200 megohms minimum 500V DC Dielectric Strength: 1,500V AC minimum for 1 minute minimum Mechanical Life: 50,000 operations minimum for On-None-Off, On-None-On, & On-Off-On models 30,000 operations minimum for all other models Electrical Life: 15,000 operations minimum Angle of Throw: 24 Materials & Finishes Toggle: Brass with chrome plating Bushing & Outer Case: Glass fiber reinforced polyamide (UL94V-0) Inner Case: Melamine Inner Sealing Ring: Acrylonitrile butadiene rubber Outer Sealing Ring: Nitrile butadiene rubber Movable Contactor: Copper with silver plating Movable Contacts: Silver alloy plus copper with silver plating Stationary Contacts: Silver alloy plus copper with silver plating Terminals: Brass with tin plating Wire Lead Covers: Heat resistant polyvinyl chloride (Leads are AWG 16) Environmental Data Operating Temp Range: 30C through +70C (22F through +158F) 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) Front Panel Seal: IP67 of IEC60529, dust tight & water protected during temporary immersion for all models optional toggle boot AT401 for additional protection (details at end of WT section) Behind Panel Seal: IP60 of IEC60529, dust tight but not water protected for solder lug & screw terminal models IP67 of IEC60529, dust tight & water protected during temporary immersion for wire lead models Installation Soldering Time & Temp: Manual Soldering: See Profile A in Supplement section. Mounting Torque: 1.47Nm (13 lbin) Standards & Certifications Flammability Standards: UL94V-0 outer case Wiring Material Standards: UL AWM 1015 Recognized at Flammability VW-1 Temperature Range 20C ~ +105C Maximum Load 600V AWG 16. CSA TEW 105 Certified at T emperature Range 20C ~ +105C Maximum Load 600V A132 www.nkkswitches.com 04/01/19 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesEnvironmentally Sealed Toggles Series WT A Distinctive Characteristics Sealing for wire lead models meets IP67 of IEC60529 Standards at front and back panel. Sealing for solder lug or screw lug models meets IP67 at front panel and IP60 at back panel. Single unit construction of bushing and case gives added protection from environmental elements. Epoxy sealed base covered by outer case doubles protection from dust and water (not operable under water or oil). Specially designed contact mechanism that breaks light contact welds for circuits 11, 12, 21 and 22. Interlocked movable contact mechanism provides highly reliable switching by minimizing contact bounce over center contact. Actual Size Heat resistant resin used for outer housing meets UL94V-0 flammability standard and provides high arc and tracking resistance. www.nkkswitches.com A133 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles