EWSK 31.5 75/5A 5VA Kl.0,2

accuracy class

apparent power (VA)

primary current

secondary current

Reset selection

Product information

The EWSK 31.5 75/5A 5VA Kl.0,2 is a compact, high-precision low-voltage measuring transformer of the proven EWSK series, specially developed for use in power distribution, switchgear, meter panels and industrial measurement and monitoring systems.

Technical main features:

Type window current transformer (Window-Type) – EWSK 31.5
Transformation ratio 75/5 A (primary rated current 75 A, secondary rated current 5 A)
Rated power / burden 5 VA
Accuracy class Kl. 0,2 (according to IEC/EN 61869-2 or DIN EN 61869-2)
Primary conductor bore For round conductors up to max. Ø 31 mm (window bore)
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 Rail and wall mounting possible

The EWSK 31.5 75/5A 5VA Kl.0,2 is characterised by its high accuracy class 0,2, robust design and simple mounting – ideal for applications requiring precise current measurements in medium power ranges (e.g. distribution transformers, energy management systems, industrial plants with higher requirements for measurement accuracy).

We are happy to supply this model from stock at short notice or configure further primary currents of the EWSK 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

current transformer knowledge

Background knowledge on the selection, dimensioning and technical parameters of current transformers – prepared in a practical manner.

current transformer correctly select & dimension

Published on 10 July 2026 · Updated on 31 July 2026

The choice of the suitable current transformer depends on primary current, connection values and purpose of use. This guide leads step by step through the most important selection criteria.

Accuracy classes for current transformers explained

Published on 10 July 2026 · Updated on 31 July 2026

What do specifications like class 0,5 or 0,2s mean for a current transformer? An overview of the common accuracy classes and their areas of application.

Stromwandler richtig anschließen

Published on 24 September 2026 · Updated on 25 September 2026

Ein Stromwandler misst nur dann richtig, wenn er in der richtigen Richtung eingebaut und sekundärseitig korrekt verdrahtet ist. Entscheidend sind drei Punkte: Die Primärklemme P1 (K) zeigt zur Einspeisung, die Sekundärkl…