Energy sub-meter
Single-phase DIN-rail energy meter · 230 V 5(63) A · 1 module · shows V, A, W, PF and kWh · wire it in series: L and N in from the breaker, L and N out to the loads you want to measure

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: Single-phase DIN-rail energy meter (e.g. DDS / PZEM-style)
Pins
- L in
- N in
- L out
- N out
Ratings and limits
| Voltage | 230 V AC (176–276 V) |
|---|---|
| Current | 5 A base, 63 A maximum, direct connected |
| Accuracy | Class 1 (±1 %) |
| Reads | V, A, W, power factor, kWh |
| Pulse | 1000 imp/kWh LED |
How to use it
Measures one branch or a group of loads: fit it after the branch breaker (L and N in), and run that branch’s L and N out of it. Everything wired after it is counted, so put loads you want to measure together on its output. For one appliance, put it between the outlet and the appliance.