NT 26 Point Addressable Heat Detector

Point Addressable Heat Detector without SCI
Point Addressable Heat Detector with SCI
Point Addressable Heat Detector without SCI
Point Addressable Heat Detector with SCI

The NT 26 point addressable heat detector is designed to detect rises in heat in premises as an early warning of developing fires. The NT 26 heat detector is fixed-temperature type, it responds when external temperature reaches a fixed value and transmits an alarm signal to the FACP.

The NT 26 addressable heat detector is available with a standard mounting base or moisture-proof base (should be ordered separately). The detectors are suitable for indoor use only.

Versions:

  • NT 260 - without short-circuit isolator,
  • NT 261 - with short-circuit isolator.
  • Features
  • Technical Data
  • Downloads
  • Certificate (CoC)
    • temperature classes А2S, BS
    • thermistor with fast response
    • electronically addressed, address range 1 – 126
    • remote LED option
    • LED status indicator
    • short-circuit isolator LED indicator (for TT 261 version)
    • loop powered
    • protection against unauthorized removal
  • Supply voltage17… 28 V DC
    Quiescent current (non-isolated detector)≤ 280 μA
    Quiescent current (isolated detector)≤ 330 μA
    Alarm current1,8 … 2,3 mA
    Alarm current, remote LED illuminated3,8 … 4,8 mA
    Max.series impedance, switch closed≤ 0,2 Ω
    Temperature class according to EN 54-5 (can be changed by means of device programmer)A2S, BS
    Temperature Response Range:
    – for class A2S54 – 70 ºС
    – for class BS69 – 85 ºС
    Dimensions (diameter x height), mm96,5 x 51,7
    Weight (with a standard base)≤ 125 g
    IP RatingIP20
    Operating temperature-10 ºС to +55 ºС
    Humidity0% to 95% RH (no condensation or icing)
    Mean time to failure≥60000 hours
    Average service life10 years
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  • NT 26 Point Heat Detector Certificate of Conformity