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Active energy meters

Three-phase – via CT up to 6000 A

COUNTIS E44 - MID - (3000 A MID - 6000 A not MID)
COUNTIS E44 – MID – (3000 A MID – 6000 A not MID)
  • The COUNTIS E4x is a modular active and reactive electrical energy meter displaying the energies and active power consumed (kWh, kvarh and kW) directly on its backlit LCD display. It is designed for three-phase load metering with connection via CT and is suitable for applications of up to 6000 A (3000 A for MID).
  • COUNTIS E42, E44 and E46 are MID certified.
RS485 communication (MODBUS or M-BUS) or pulse output
  • To enable the remote reporting of energy consumption, COUNTIS E4x are provided with either a pulse output or an RS485 communication output, with MODBUS or M-BUS protocol.
  • In addition to their reporting functions, COUNTIS E4x with RS485 can be configured remotely and enable access to multimeasurement values.
Detection of connection errors
  • The product is protected against phase/neutral inversion and detects wiring errors. This simplifies the installation and commissioning, thereby reducing associated costs, and ensures that the device operates correctly.
MID certified B+D module
  • COUNTIS E products with MID certification provide the guaranteed accuracy required for applications in which sub-billing of the electrical energy consumed is necessary. “Module B+D” certification guarantees that the design and manufacturing process of products are approved by an accredited laboratory.
Bi-directional metering (available only on the E43 and E45)
  • This function is for metering energy production or energy consumption.
Multi-measurement and load curve
  • Display of electrical values (I, U, V, S, PF) and load curve over a 7 day period via communication.
Principle diagram
pincipal diagram COUNTIS E4x
Common characteristics
  • Measurement accuracy: 1%
  • Backlit LCD display.
  • Detects connection errors


Models Key functions
E40 Pulse output
E41 Dual tariff (2 partial counters) + Pulse output
E42 Dual tariff + MID (Reset impossible) + Pulse output
E43 RS485 MODBUS communication
E44 RS485 MODBUS communication + MID (Reset impossible)
E45 M-BUS communication
E46 M-BUS communication + MID (Reset impossible)


Front panel

front panel COUNTIS E4x 1. Terminal shrouds (COUNTIS E42, E44 and E46).
2. Backlit LCD display.
3. MID marking (COUNTIS E42, E44 and E46).
4. Serial number (COUNTIS E42, E44 and E46).
5. Navigation key.
6. Reset key.
7. Metrological LED.
8. Programming key.


Electrical characteristics

COUNTIS E42, E44 and E46
Current measurement
Type three-phase on CT/5A up to 6000 A (3000 A for MID products)
Input consumption 0.2 VA per phase
Startup current (Ist) 10 mA
Minimum current (Imin) 50 mA(1) 
Transition current (Itr) 250 mA(2)
Reference current (Iref) 5 A(3)
Permanent overload (Imax) 6 A
Intermittent overload 120 A for 0.5 s
Voltage measurement
Range of measurement 230…400 V ± 20%
Consumption (VA) 2 VA
Permanent overload 280 V phase-neutral /
480 V phase-phase
Energy accuracy
Active (according to IEC 62053-21) Class 1
Active (according to EN 50470) Class B
Power supply
Self-supplied yes
Frequency 50 / 60 Hz
Output (pulsed)
Type of optocoupler IEC 62053-31 Class A (20 … 30 VDC)
Number 1
Pulse weight 100 Wh, 1 kWh, 10 kWh, 100 kWh
Pulse duration 50 ms, 100 ms, 200 ms, 400 ms, 800 ms, 1000 ms, 1500 ms
Operating conditions
Operating temperature -10 to 55 °C
Storage temperature -20 to 70 °C
Relative humidity 85%
Link RS485
Type 2 … 3 half duplex wires
MODBUS® speed 4800 … 38400 bauds
M-BUS speed 300 … 9600 bauds

(1)  I(min) ≤ 0.5 * ltr

(2) The accuracy class is guaranteed between Itr and Imax*

(3) I(ref) = I(b) (base current) = 10 * I(tr) for direct connection COUNTIS.


case COUNTIS E4x
Current measurement COUNTIS E42, E44 and E46
Type modular
Number of modules 4
Dimensions W x H x D 73 x 90 x 62.5 mm
Case degree of protection IP 20
Front degree of protection IP 51
Display type backlit LCD display
Rigid cable cross-section 1.5 to 10 mm2
Flexible cable cross-section 1 to 6 mm2
Weight 230 g



– For IT earthing systems, it is recommended that the CT secondary is not connected to earth.
– When disconnecting the COUNTIS, the secondary of each current transformer must be short-circuited.

connection COUNTIS E4x



Type Reference Reference Reference Reference Reference Reference Reference
Via CT 4850 3008
Via CT – Dual tariff 4850 3009
Via CT – Dual tariff – MID 4850 3015
Via CT with RS485 MODBUS communication (1) 4850 3017
Via CT with RS485 MODBUS communication – MID(1) 4850 3014
Via CT with M-BUS communication (1) 4850 3027
Via CT with M-BUS communication – MID(1) 4850 3028
Management software for COUNTIS

 (1) 4 tariff through RS485 communication.