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Model EM341AS three phase four wire electronic multi-rate front board installed active energy meter is a kind of three phase four wire three tariffs (time-sharing billing)active energy meter, the meter completely accord with relevant technical requirements of class 1 three phase active energy meter stipulated in international standard IEC 62053-21. It can accurate and directly measure 50Hz or 60Hz active energy consumption from three phase four wire AC electricity net, it is use for setting indoor or out door meter box. This meter has seven digits LCD displays shows various consumption data and information. And there are far infrared and RS485 communication module in it. It is use for setting and reading the meter. Contact with all kind of AMR system conveniently. It has following features: good reliability, light weight, specious nice appearance, convenient installation, etc.

Functions and features
● Front board three fixed installation, up and down mounting holes center distance is 198-212 mm, users can choose any one by themselves.
● Type 48B wiring, use CT connect operation, may select 27 CT ratio, the meter will read directly after set, and needn’t multiplied by CT rate.
● Have three tariffs, may select 12 daily period of times. You can set the date arbitrary which can automatic read the meter every month. May select single tariff function in weekend. (Please specified when ordering)
● There are a clock and Maintenance-free backup lithium batteries in it. Battery capacity detection and display all the time. It can keep the electricity data for 12 months. The data can be kept forever after power cut off.
● May select cycle display (default) or push the button itemized display, we can set the cycle display, it can display 15 data at most. Can select the data which displayed, Data 5+2 digits(99999.91kWh, Only when CT ratio 5:5A) or 7 digits display. It is choose by the CT ratio which is set.
● There are a polarity port of pulse output passive closed and a nonpolarity port of pulse output passive distant, the output rate is 10kWh / Pulse), Complying with standard IEC 62053-31 and DIN 43864.
● There are far infrared and a port of RS485 communication data. It is use for setting and reading the meter. Set and operation have password protection, communication agreement complying with standard DL/T645-1997.
● Ten LED instructions respectively power supply state, signal of energy impulse, the direction of the flow of load current, the state rates just now and the data communications state.
● Single direction three components measure three phase four wire active energy consumption. It is nothing with direction of the flow of load current. Complying with standard IEC 62053-21.
● Standard configuration extension terminals cover, in order to protect to use safety, may select short terminals cover. (Product Configuration code is AR).

Technical parameters



voltage (V)

specifications (A)

current (A)



Class 1

3 X 127/ 220
3 X 230/ 400

CT/ 5A


AC voltage 4kV for 1 minute,
1.2/50us waveform
impulse voltage 6kV

*If you need different reference voltage or current specification, please advisory our sales.

Outer and mount dimension

Wiring diagram (Type 48B)



1 Inlet  L1 phase CT
3 Outgoing L1 phase CT
4 Inlet L2 phase CT
6 Outgoing L2 phase CT
7 Inlet L3 phase CT
9 Outgoing L3 phase CT
2 L1 phase
5 L2 phase line
8 L3 phase  line
10 Neutral  line
14 and 15 Port of set the CT ratio
16 and 17 Port of RS485 data communication
18 and 19 Port of pulse output passive distant
20 and 21 Port of pulse output passive closed