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Single-phase prepaid power meter

Single-phase prepaid electronic power meters 3CA-1

Electronic single-phase power meters 3CA-1 measure active electric power in two-wire circuits, also indicating maximum demand, time, tariff zones, tamper and outages information, and service data. Options include load management features, communication devices, and tamper sensors: case/ terminal open, reverse and neutral phase' current.

3CA-1 meters are equipped with disconnection relay and smart card slot for operation in prepaid and automatic post-paid mode. Refer to brochure for details.

Alternatively to the smart card, 3CA-1 meters come with two-way PLC for remote disconnection and load management.


Downloads technical description3CA-1


Accuracy class



110-120, 220-240V +/-30%

Rated (maximum) current

5 (25) A, 5 (50) A, 10 (100) A, 20 (100) A


4 tariffs, hourly intervals, 4 seasons , weekends and unlimited holidays, daylight savings time

Operating temperature


Power loss

below 2W


50 Hz +/-5%

Current sensor resistance

0.0005 Ohm

Clock accuracy

Better than 0.5sec daily


Optical port, RS-485, PLC, LCD, memory, clock, circuits

Optical port transmission speed

3009600 bps

Transmission RS-485, PLC speed

9600 baud, 19200 baud

Data security

Password, hardware security, encryption

Standard warranty

3 years

Extended warranty

8 years

Recalibration period

16 years


30 years


IP 54

Meter overall dimensions

170 х 120 х 80 mm

Overall dimensions including packing

202 х 146 х 100 mm

Meter weight

Below 1 kg


The terminals of updating

Terminals of updating


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