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Rail mounting device, 4 rail units
 ETS product family: Physical sensors
 Product type: Energy detector
The energy detector has three channels for connecting loads to up to three separate phases with a common neutral conductor. Each channel can measure:
 - Voltage (eff.)
 - Current (eff.)
 - Active power
 - Reactive power
Additionally, the active power and reactive power of all channels will be summed up and displayed as three-phase power values along with the mains frequency. According to the parameterisation the measured values will be transmitted on the KNX bus, either cyclically and / or when the value changes. An additional telegram will be transmitted if certain values exceed or fall below a specified limit.
The following meters exist for each channel and for the three-phase values:
 - 1 x energy meter total 
- 1 x energy meter ¼ h value 
- 3 x energy meter n 
- 3 x energy intermediate meter n 
- Direct measurement (without transformer) 
- Transformer measurement (with external 75 A transformer, ratio 75:5, e.g. Phoenix Contact order key 2277611)
| Power supply via E1/N | |
| Rated voltage: | AC 110 ... 240 V ~ | 
| Mains frequency: | 50/60 Hz | 
| Power consumption: | max. 2 W | 
| Inputs E1 ... E3 | |
| Rated voltage range: | AC 110 ... 240 V ~ | 
| Rated current range: | 4 mA ... 16 A | 
| Rated frequency: | 50/60 Hz | 
| Measurands: | voltage (rms value) current (rms value) frequency active power (signed +/-) reactive power (signed +/-) active energy (signed +/-)  |  
| External transformer | |
| Transformation ratio: | 75:5 | 
| Secondary current: | 0 ... 5 A | 
| Accuracy: | |
| Direct measurement (without transformer): | 1 % of 200 mA ... 16 A | 
| Transformer measurement (75 A transformer, class 1): | 2 % of 7.5 A ... 75 A | 
| Pulses LED: | |
| Direct measurement (without transformer): | 6400 / kWh | 
| Transformer measurement (75 A transformer): | 427 / kWh | 
| Pulse duration: | 4.9 ms | 
| Power loss | |
| Voltage measurement: | ≤ 0.03 W / phase | 
| Current measurement: | ≤ 0.8 W / phase | 
| Power consumption from mains: | < 1 W | 
| Connection | |
| Connection mode: | screw terminals | 
| single wire: | 0.5 ... 2.5 mm² | 
| stranded without ferrule: | 0.5 ... 2.5 mm² | 
| stranded with ferrule: | 0.5 ... 2.5 mm² | 
| Ambient temperature: | -5 ... +45 °C | 
| Storage/transport temperature: | -25 ... +70 °C | 
| Mounting width: | 72 mm (4 rail units) | 
| KNX medium: | TP 256 | 
| Rated voltage KNX: | DC 21 ... 32 V SELV | 
| Current consumption KNX: | typical 10 mA | 
| Connection, KNX: | terminal |