SMone
SMone SM-CT20-80-5-05 Current Transformer 80/5 A Class 0.5 Ø 20 mm
SMone SM-CT20-80-5-05 Current Transformer 80/5 A Class 0.5 Ø 20 mm
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Businesses and non-Italian private customers: purchase with 22% VAT. The 10% rate is reserved for private customers resident in Italy — find out more.
Foreign companies entitled to 0% VAT: please write to info@litio.store.
Delivery in 10-20 daysMetering & sensorsAC sideSMone
SMone SM-CT20-80-5-05 Current Transformer 80/5 A Class 0.5 Ø 20 mm
The SMone SM-CT20-80-5-05 is a single-phase feed-through current transformer (CT) of the SM-CK20 series, with a transformation ratio of 80/5 A. It converts the line current into a standardised 5 A secondary signal, usable by energy meters, power analysers, power factor controllers and SVG compensators that require an indirect measurement of the current.
It is installed in the electrical panel by passing the phase conductor through the Ø 20 mm window; the secondary is connected by means of screw terminals protected against accidental contact. The 0.5 accuracy class makes it suitable for internal billing and sub-metering measurements, while the FS 5 safety factor protects the downstream instruments by limiting the secondary current in the event of a heavy primary overcurrent.
Key features
80/5 A ratioTransforms a line current of up to 80 A into a standard 5 A secondary signal, compatible with almost all industrial measuring instruments.
0.5 accuracy classRatio error kept within ±0.5 %, sufficient for internal energy accounting and for power factor control.
Ø 20 mm feed-through mountingThe 20 mm window allows cables or busbars to pass through without interrupting the circuit; a DIN rail clip is available as an option.
FS 5 safety factorLimits the secondary current in the event of a primary overcurrent, safeguarding the connected meters and analysers.
IEC 61869-2 compliant constructionDesigned in accordance with IEC 60044-1 / IEC 61869-2, with an insulation test voltage of 3 kV for 1 minute.
Wide temperature rangeOperates from -25 °C to +85 °C, suitable also for panels in non-air-conditioned environments.
Technical specifications
| Feature | Value |
|---|---|
| Product code | 116050 |
| Model | SM-CT20-80-5-05 (SM-CK20 series) |
| Type | Single-phase through-hole current transformer |
| Phases | 1 (single-phase) |
| Rated primary current | 80 A |
| Rated secondary current | 5 A |
| Transformation ratio | 80/5 A |
| Measurement type | Indirect, with current transformer |
| Accuracy class | 0.5 |
| Rated secondary power | 1,5 VA |
| Safety factor | FS 5 |
| Window diameter | 20 mm |
| Test voltage | 3 kV for 1 minute |
| Rated frequency | 50 / 60 Hz |
| Short-time thermal current | Ith = 60 × In |
| Continuous thermal current | 1,2 × In |
| Secondary connection | Screw terminals with touch protection |
| Mounting | Through-hole on cable or busbar; optional DIN rail clip |
| Operating temperature | -25 °C ... +85 °C |
| Standards | IEC 60044-1, IEC 61869-2, EN 61869-2, VDE 0414-1 |
| Dimensions | 44 × 65.5 × 31.5 mm |
| Weight | 0.2 kg |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.