![Belimo 01ST-5L3 Contact Temperature Sensor passive, NTC10k (10k2), Probe diameter 0.24" [6 mm], cable 2 m, 2-wire](https://hsgroupexport.com/wp-content/uploads/2025/08/PIC_AM_01ST-5._4C-product_retina-2-300x300.jpg)
Current transformer TKB 0.5-3,
The summation transformer functions as builder of the total value “ls” of the secondary currents “lm1,
lm2, …” of differenct main CT’s as follows:
When the summation transformer is used for metering,
the main CT’s and the summation transformer have to be officially calibrated in class 0.2.
- Summation transformer for max. 4 currents
- Moulded in Polyurethane, compact design
- Mounting plate is part of delivery
- Tropic-proof
- Terminals plumbable
- Standard: IEC/EN 61869-2
- Official calibration possible (execpt TKB 0.5)
Technical data
| Highest operating voltage | 0.72 kV |
| Test voltage | 3.0 kV |
| Frequency | 50/60 Hz |
| Secondary current | 5 or 1 A |
| Continuous thermal current | 120 % Ipr |
| Short-time thermal current | 60 Ipr 1s |
