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A70QS Series / Size 14x51 & 22x58 / 700V

These Premium Amp-trap® French Cylindrical Semiconductor Fuses are an extension of the popular A70QS product line. They are solid-fill 14mm and 22mm fuses IEC rated 690VAC, 200kA Interrupting and 700VDC, 100kA interrupting at 10ms time constant. In addition, these fuses have an 890 VDC rating for capacitor discharge applications up to 2.5ms time constant. All ampere ratings are available with a striker. Applications include small inverter drives and UPS systems, with superior low I2t for improved protection and performance.

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  • Lowest I2t of any fuse this size for greater protection
  • Excellent cycling ability gives advantage in equipment
  • 600V AC/DC rated


  • International 14x51mm (2”x9/16”) and 22x58mm
    (2 1/4”x13/16”) sizes for worldwide acceptance
  • Ferrule mount up to 100A for design versatility
  • Very low I2t for improved semiconductor protection
  • 690V IEC rated, tested at 760VAC; can be used up to 750VAC in U.S.
  • 700VDC rated for dc protection of equipment with
    L/R ≤10ms
  • Superior cycling ability for longer life on difficult cyclic loading applications
  • aR characteristic for semiconductor short-
    circuit protection


  • AC: 690VAC, 10A to 100A, 200kA I.R.
  • AC: 700VDC, 10A to 100A, 100kA I.R.
  • UL Recognized Component
  • CSA Certified
  • IEC 269-4 Compliance
  • Small inverters, UPS systems, Solid State Relays,motor drives and similar 700V or less equipment