Current transformer 1200/5 A
Ratio 1200:5 · primary current 1200 A, secondary current 5 A
9 CELSA current transformers with a ratio of 1200/5 A: Calibrated clip-on current transformers (ALO-E), Rail conversion current transformer (IAM, IAG) and Protective current transformer (ICM, IER-1, IER-2 …). Accuracy class 0.2, 0.5, 0.5 S, 1 or 5P5–10P10, rated burden 1–30 VA. From €97.38 incl. VAT, with datasheet – order online.
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Frequently asked questions
What does 1200/5 A mean?
With 1200 A flowing in the primary conductor, the transformer delivers 5 A to the meter or measuring device – a ratio of 240:1. Meters and instruments are set to this CT ratio.
How much burden (VA) do I need?
The rated burden must cover the consumption of the connected devices plus the losses of the measuring line, without being much higher. The types listed here offer 1–30 VA. The VA calculator determines the value. VA calculator →
Which accuracy class?
For 1200/5 A the classes 0.2, 0.5, 0.5 S, 1 and 5P5–10P10 are available here. Billing-relevant metering requires class 0.5 or better; for display and monitoring class 1 is usually sufficient. Accuracy class comparison →