Designing Technology into Solutions
 

KM

Subminiature Pushbutton Switches

KM, Pushbutton

Features/Benefits

  • Reliable contact design
  • Available with pretravel and overtravel
  • Extended overtravel option
  • RoHS compliant

Typical Applications

  • Alarm systems
  • Computers
  • Detector switch application

Specifications

  1. CONTACT RATING: Q contact material (KM11, KM12 Models):0.25 AMPS @ 125 V AC or DC (UL); (KM33 Model): 1 AMP @ 125 V AC or 28 V DC. See page A-69 for additional ratings.
  2. ELECTRICAL LIFE: 10,000 actuations min. at full load.
  3. CONTACT RESISTANCE: Below 30 mΩ typ. initial @ 2-4 V DC, 100 mA, for both silver and gold plated contacts.
  4. INSULATION RESISTANCE: 109Ω min.
  5. DIELECTRIC STRENGTH: 1,000 Vrms min. @ sea level.
  6. OPERATING TEMPERATURE: –30ºC to 85ºC.
  7. CAP INSTALLATION FORCE: 10 lbs. max. permissible.

Materials

  1. HOUSING & BUSHING: 6/6 nylon (UL94V-2), black.
  2. ACTUATOR: 6/6 nylon (UL 94V-2), natural. Internal o-ring seal,available on KM11 & KM33 models.
  3. MOVABLE CONTACT: B contact material: Bronze or copper, with gold plate over nickel plate. See page A-69 for additional contact materials.
  4. STATIONARY CONTACTS & TERMINALS: B contact material: Copper, with gold plate over nickel plate. See page A-69 for additional contact materials.
  5. RETURN SPRING: Music wire, phosphor coated.
  6. MOUNTING NUT: Brass, nickel plated.
  7. TERMINAL SEAL: Epoxy.
 

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