Meter 3f PRO380-Mb 100A M-Bus – Three-phase meter
€377.00
The MID-certified three-phase energy meter with M-Bus
The HW group Meter 3f PRO380-Mb 100A M-Bus is a static three-phase direct measurement energy meter for up to 100 A with M-Bus interface. It measures and displays a range of instantaneous values, including voltage, current, active power, reactive power, apparent power, mains frequency and power factor – part of these on the LCD display, additional values via M-Bus.
MID-compliant for billing purposes: The PRO380-Mb complies with the Measuring Instruments Directive (MID) 2014/32/EU. This MID approval confirms the accuracy and quality of the meter and permits its use for billing purposes, such as consumption-based cost distribution in multi-tenant buildings.
For direct measurement up to 100 A: The meter is connected directly into the circuit (no current transformer required) and covers a rated current range of 3x230V/400V at up to 100 A. The PRO380 series is also available as a standard version, as a 2-tariff variant, and with M-Bus and pulse output.
Direct measurement, M-Bus and pulse output in one device
The PRO380-Mb combines precise energy measurement with multiple data transmission paths.
Direct measurement up to 100 A
Three-phase direct measurement at 3x230V/400V without external current transformer.
MID-certified
Compliant with the Measuring Instruments Directive 2014/32/EU, suitable for billing purposes.
M-Bus interface
Digital reading of meter data via M-Bus according to EN13757-3.
S0 pulse output
Additional forward and reverse pulse output for remote reading or accuracy verification.
Comprehensive measured values
Voltage, current, active, reactive and apparent power, mains frequency and power factor per phase.
Infrared interface
Reading and configuration via PC software through an optical infrared interface.
How the PRO380-Mb is constructed
The PRO380-Mb is housed in a flame-retardant PC plastic casing and designed for mounting on a 35 mm DIN rail.
Housing and front cover
The housing consists of flame-retardant PC plastic with a transparent, colored protective cover over the connection terminals. The device weighs approximately 0.39 kg and snaps onto a 35 mm DIN rail.
LCD display with two lines
A multifunctional 8-digit LCD display shows the respective measured value in the upper line and the unit, phase and/or direction in the lower line. A blue backlight can be permanently switched on, off, or activated via button.
Two control buttons
Two buttons on the front are used to scroll through display pages and configure the device. Depending on the duration of pressing (1, 3 or 5 seconds), pages are scrolled, a menu is called up, or a setting is confirmed.
Red status LED
A red LED on the front panel flashes proportionally to the measured energy flow – 10,000 pulses per kWh. The faster it flashes, the more power is currently flowing through the meter.
Connection terminals L1–L3 and N
On the input and output side there are terminals for phases L1, L2, L3 and the neutral conductor N, through which the meter is connected directly into the circuit (through-wiring).
S0 pulse outputs
Two galvanically isolated open-collector outputs (terminals 18/19 for forward and 20/21 for reverse pulses) output energy consumption proportionally as pulses, for remote reading or accuracy verification.
M-Bus/Modbus communication terminals
Digital communication via M-Bus according to EN13757-3 takes place via terminals 22/23.
External tariff input
An external 230V AC voltage can be applied to terminals 24/25 to switch between the two tariffs T1 and T2.
Infrared eye
Via an optical infrared interface (protocol IEC62056-21:2002), the meter can be read and configured by direct contact with an optional infrared reading head and PC software.
What the PRO380-Mb displays
The meter displays a variety of instantaneous values, individually per phase and as a total value.
- Voltage per phase (L1, L2, L3)
- Current per phase (L1, L2, L3)
- Active power total and per phase
- Reactive power total and per phase
- Apparent power total and per phase
- Power factor (COS) total and per phase
- Mains frequency
- Active and reactive energy, each total, forward and reverse
For energy consumption, the display shows up to 99999.99 kWh and automatically switches to the display 999999.9 kWh beyond that. Additionally, a user-resettable daily counter for forward-counted energy is available.
Digital reading according to EN13757-3
The M-Bus interface transmits the meter data digitally to a higher-level system, such as an M-Bus level converter or an HW-group device with M-Bus master.
- Baud rate factory-set to 2400, adjustable to 300/600/1200/4800/9600
- Data format 8 data bits, even parity, 1 stop bit (fixed, not changeable)
- Range up to 1000 m, cable type JYSTY (nx2x0.8)
- Up to 64 meters on one M-Bus line (depending on level converter, baud rate and installation conditions)
- Factory primary address 00, secondary address preset to the last 8 digits of the serial number
- Primary and secondary address as well as baud rate can be changed via infrared or M-Bus
Display, buttons and configuration
The buttons on the meter allow display and numerous settings to be controlled directly on the device.
- Automatic page change every 10 seconds (adjustable from 1 to 30 seconds)
- Manual scrolling through all display pages via button press
- Individual measured values can be added to or removed from automatic display
- Backlight optionally permanently on, off, or activatable via button
- Calculation method of total energy (Combination Code) selectable between seven variants, e.g. only forward, only reverse, or forward minus reverse
- Configuration menu (Program mode 3) protected by a 4-digit password, factory-set 0000
Mounting on the DIN rail
- Mounting on a 35 mm DIN rail in the control cabinet
- Installation only by qualified personnel
- Installation on a fire-resistant wall, in a dry and well-ventilated environment
- In case of dust or other contamination, install in an additional protective housing
- After installation, the meter should be sealed to protect against manipulation
- In environments with frequent voltage spikes (e.g. from thunderstorms or welding equipment), the use of surge protection is recommended
For reliable continuous operation in the control cabinet
- Operating temperature from -25 °C to +55 °C at 0 to 75 % relative humidity
- Storage temperature from -25 °C to +55 °C at 5 to 95 % relative humidity
- Accuracy class B (corresponds to 1 % measurement accuracy)
- Protection class IP51 against dust and dripping water
- Insulating material encapsulated meter of protection class II
- MID-certified according to 2014/32/EU, voltage resistance 4 kV (1 minute) and surge voltage resistance 6 kV
- 24 months manufacturer warranty
What is included in the scope of delivery
Please check the scope of delivery upon receipt for completeness and report any missing or damaged parts to your supplier immediately.
- Meter 3f PRO380-Mb 100A M-Bus1 piece
Why the PRO380-Mb is suitable
MID-certified
Suitable for consumption-based billing.
Direct measurement up to 100 A
No additional current transformer required.
M-Bus & S0
Digital remote reading as well as classic pulse output in one device.
Comprehensive measured values
Voltage, current, power and more visible per phase.
DIN rail mounting
Space-saving installation in the control cabinet.
2-tariff capable
Switching between two tariffs via external input.
Practical application examples
- Consumption-based billing of tenants in multi-tenant buildings
- Sub-metering of individual circuits or rental areas in commercial properties
- Integration into building management systems and energy management systems via M-Bus
- Central recording of multiple meters via an M-Bus master such as HWg-PWR or Perseus Energy
- General energy measurement in control cabinets and technical rooms
Frequently asked questions
What is the HW group Meter 3f PRO380-Mb 100A M-Bus and what is it used for?
The PRO380-Mb is a MID-certified, three-phase direct measurement energy meter for up to 100 A with M-Bus interface. It measures voltage, current and power and, thanks to MID approval, is also suitable for billing purposes.
Does the PRO380-Mb require an external current transformer?
No. The PRO380-Mb measures directly up to 100 A and is connected directly into the circuit without an external current transformer.
How are the data read out?
The data can be read digitally via the M-Bus interface according to EN13757-3; additionally, an S0 pulse output and an infrared interface are available for direct reading via PC software.
How many meters can be operated on one M-Bus line?
Up to 64 meters per bus, depending on the M-Bus level converter used, the selected baud rate and the installation conditions.
Is the PRO380-Mb approved for consumption-based billing?
Yes. The meter is certified according to the Measuring Instruments Directive (MID) 2014/32/EU and is therefore suitable for billing purposes.
How is the PRO380-Mb mounted?
The meter is snapped onto a 35 mm DIN rail and should be installed on a fire-resistant wall in a dry, well-ventilated environment.
Does the PRO380-Mb support two tariffs?
Yes. Via an external 230V AC voltage input at terminals 24/25, switching between tariffs T1 and T2 is possible.
Questions about the PRO380-Mb?
Our support team in Germany will advise you free of charge on selection, mounting and setup.
HW-Group Meter 3f PRO380-Mb 100A M-Bus
General Data
- Three-phase energy meter for direct measurement up to 100 A
- M-Bus communication
- MID-approved energy meter
- Measurement in 3 phases
- Rated voltage: 230/400 V AC (3~)
- Operating voltage: 3 × 230/400 V ±20 %
- Housing made of flame-retardant PC plastic
- Accuracy class B (1 % accuracy)
- Standard: EN 50470-1/3
Electrical Data
- Basic current (Ib): 5 A
- Maximum operating current (Imax): 100 A
- Operating current range: 0.4 % Ib to Imax
- Overcurrent withstand: 30 × Imax for 0.01 s
- Operating frequency: 45–60 Hz
- Self-consumption: ≤2 W/Phase or ≤10 VA/Phase (active power – reactive power)
Insulation Strength
- AC voltage resistance: 4 kV for 1 minute
- Impulse voltage resistance: 6 kV, 1.2 μs waveform
- Protection class: II
Pulse Outputs
- Test output via red LED: 10,000 imp/kWh
- Pulse rates: 10,000 / 2,000 / 1,000 / 100 / 10 / 1 / 0.1 / 0.01 imp/kWh
- Pulse width at 1,000 / 2,000 / 10,000 pulses:
- 0–4,999 W: 40 ms
- 5,000–9,999 W: 20 ms
- 10,000–19,999 W: 10 ms
- 20,000–39,999 W: 5 ms
- >40,000 W: 2.5 ms
- Pulse width at 100 pulses:
- <50,000 W: 40 ms
- >50,000 W: 20 ms
- Other pulse rates: always 40 ms
Measurement Accuracy
- At 0.05 Ib, Cos φ = 1: ±1.5 %
- At 0.1 Ib, Cos φ = 0.5L: ±1.5 %
- At 0.1 Ib, Cos φ = 0.8C: ±1.5 %
- At 0.1 Ib to Imax, Cos φ = 1: ±1.0 %
- At 0.2 Ib to Imax, Cos φ = 0.5L: ±1.0 %
- At 0.2 Ib to Imax, Cos φ = 0.8C: ±1.0 %
Data Storage
- Data storage for more than 10 years without power supply
M-Bus Communication
- Bus type: M-Bus
- Baud rates: 300 / 600 / 1,200 / 2,400 / 4,800 / 9,600 Baud
- Standard baud rate: 2,400 Baud
- Range: ≤1,000 m
- Downlink: Voltage modulation from master to slave
- Uplink: Current modulation from slave to master
- Cable: JYSTY (n × 2 × 0.8)
- Protocol: EN 13757-3
- Unit Loads: ±2
- Maximum number of meters: 64 per bus*
Infrared Interface
- Infrared wavelength: 900–1000 nm
- Communication distance: direct contact
- Protocol: IEC 62056-21:2002 (IEC1107)
Ambient Conditions
- Permissible operating humidity: ≤75 % RH
- Permissible storage humidity: ≤95 % RH
- Operating temperature: -40 to +70 °C (DC version)
- Operating temperature: -25 to +70 °C (CT version)
- Protection class: IP51
Connection Data
- Maximum diameter of connection terminals:
- 25 mm² for flexible conductors
- 35 mm² for solid copper conductors
Dimensions & Weight
- Height without protective cover: 92.4 mm
- Height: 141 mm
- Width: 70 mm
- Depth: 63 mm
- Weight: 0.39 kg net
Additional Data
- MID-approved
- Protection against ingress of dust and water: IP51
- *The maximum number of meters per bus depends on the converter used, the baud rate and the installation conditions.
Manufacturer information:
HW group s. r. o.
Rumunská 26
Prague, 120 00
Czech Republic
Phone: +420 222 511 918
Email: sales@hwg.cz
Responsible person:
Didactum® Security GmbH
Im Mühlenfeld 4
48163 Münster
Deutschland
Fon:
(+49) 250 19 71 63 54 / (+49) 171 33 11 577
Email: info@didactum-security.de
