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The plug-on current transformer ASK 31.3 250/5A 1,5VA Kl.1 is a compact, highly precise low-voltage measuring transformer of the proven ASK series, specially developed for use in power distribution, switchgear, meter panels and industrial measurement and monitoring systems.

Technical main features:
  • Type plug-on current transformer (Plug-in Type) – ASK 31.3
  • Transformation ratio 250/5 A (primary rated current 250 A, secondary rated current 5 A)
  • Rated power / burden 1,5 VA
  • Accuracy class accuracy class 1 (according to IEC/EN 61869-2 or DIN EN 61869-2)
  • Primary conductor bore For round conductors up to max. Ø 31 mm (cable entry)
  • Maximum operating voltage Um ≤ 0,72 kV
  • Rated frequency 50–60 Hz
  • Thermal rated continuous current Icth = 1,0 × Ipr (continuous current 1 × primary rated current)
  • Thermal rated short-time current Ith = 60 × Ipr, 1 s
  • Insulation class E
  • Insulation test voltage 3 kV, 50 Hz, 1 min
  • Mounting Plug-on to primary conductor, incl. secondary terminals and mounting options

The plug-on current transformer ASK 31.3 250/5A 1,5VA Kl.1 is characterised by its simple handling, high reliability and excellent linearity – ideal for applications where uncomplicated retrofitting and precise measurement at medium currents is required (e.g. existing distribution boards, measuring points, energy monitoring systems with moderate power requirements).

We will be happy to supply this model from stock at short notice or configure further primary currents of the ASK series for you.

Contact us for your individual quote!


3D models and more files to each product can be found in our download area downloadarea

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