PRO380-Mod 0.25–100A Modbus MID – three-phase power monitoring
€286.00
MID-certified energy meter for three-phase power monitoring
The HW group PRO380-Mod 0.25-100A ModBus MID is a three-phase energy meter with RS485 Modbus interface. The PRO380 displays numerous instantaneous values such as voltage, current, active power, reactive power, apparent power, frequency and power factor on the LCD display and also provides some of them via Modbus. The PRO380-Mod complies with the Measuring Instruments Directive 2014/32/EU (MID). This MID approval confirms the accuracy and quality of the meter and enables its use for billing purposes.
The meter measures directly in a three-phase 230/400 V network up to 100 A and also has an S0 pulse output in addition to the Modbus interface.
Precise three-phase measurement with Modbus connectivity
The PRO380-Mod is designed for direct measurement of three-phase circuits up to 100 A.
MID-certified
The meter complies with the Measuring Instruments Directive 2014/32/EU and is therefore suitable for use for billing purposes.
Direct measurement up to 100 A
The meter measures the current in the three-phase 230/400 V network directly, without an external current transformer.
RS485 Modbus interface
Via the integrated RS485 interface, the measured values can be read out using Modbus RTU and the meter can be configured.
Additional S0 output
In addition to the Modbus interface, the PRO380-Mod has an S0 pulse output for remote reading or accuracy testing.
LCD display with instantaneous values
Voltage, current, active, reactive and apparent power, frequency and power factor are displayed per phase directly on the device.
How the PRO380-Mod is designed
The housing of the PRO380-Mod is designed for mounting on a 35 mm DIN rail and is connected via screw terminals. Depending on the network type (3P4W, 3P3W Open Delta/Aron, 3P3W Delta or 1P2W), the terminals are assigned differently.
Connection terminals for the three phases and the neutral conductor
Terminals L1, L2 and L3 each carry phase input and output, terminal N the neutral conductor. In direct 3P4W measurement (three-phase network with neutral), all three phases and the neutral are looped through; in delta or Aron configurations (3P3W) the neutral connection is omitted, in single-phase operation (1P2W) only L1 is used.
RS485 Modbus connection
Via terminals 22 and 23 (A/B), the meter is connected via the RS485 bus to a Modbus RTU master system, through which the measured values can be read out and settings can be made.
S0 pulse outputs
Terminals 18/19 (forward) and 20/21 (reverse) provide potential-free S0 pulse outputs, via which energy consumption can be read out proportionally as a pulse sequence, e.g. for testing or remote reading purposes.
External tariff input
Via terminals 24/25 an external 230 V AC voltage can be applied to switch between tariff T1 and T2 when the meter is operated as a dual-tariff meter.
LCD display and control buttons
On the front, a two-line LCD display shows values, unit, phase and energy direction. Using two buttons, you can scroll through the display pages and configure the meter directly on the device (e.g. scroll time, backlight, Modbus ID, combination code).
Infrared interface
In addition, the meter has an infrared interface according to IEC62056-21 (IEC1107), via which it can be read out and programmed with an optical IR reading head and the associated PC software.
Red status LED
A red LED on the front indicates the energy flow: it flashes proportionally to the measured power and thus serves as a quick visual check of whether and how much energy is flowing. In addition, the display shows per phase whether the energy is flowing forward (FW) or reverse (RV).
Extensive measurement and configuration functions
In addition to pure energy measurement, the PRO380-Mod offers further useful functions that can be set directly on the device or via Modbus.
Automatic scroll
The display automatically switches between the programmed display pages; the scroll time can be set individually.
Combination code
The total energy can optionally be calculated and displayed from forward, reverse or a combination of both energy directions, also per phase.
Resettable daily counter
An additional user-resettable meter reading allows simple recording of consumption over a specific period.
2-tariff function
Via the external tariff input, switching between two tariffs (T1/T2) is possible, whose energy values are recorded separately.
Password protection
The advanced configuration mode is protected by a four-digit password to prevent unauthorized changes.
Power failure counter and diagnostic display
A power-down counter records voltage failures; a diagnostic display reports program, EEPROM and phase status.
Practical application examples
- Billing-capable energy measurement in three-phase systems
- Sub-metering of individual circuits or rental units
- Energy monitoring in commercial and industrial operations
- Integration into Modbus-based building management systems
- Remote reading via S0 pulse output or RS485 bus
- Integration into HW group monitoring systems via Modbus
Commissioning in a few steps
Installation and connection may only be carried out by qualified specialist personnel.
- Mount the meter de-energized on a 35 mm DIN rail
- Connect phases L1, L2, L3 and if applicable neutral N according to the network type used (3P4W, 3P3W or 1P2W)
- Connect the RS485 bus to the Modbus master system at terminals 22/23
- If required, connect the S0 pulse outputs at terminals 18/19 or 20/21
- When using the 2-tariff function, apply external voltage to terminals 24/25
- Configure Modbus ID, baud rate and other settings via the front buttons or the Modbus registers
- Reattach the protective covers and seal the meter after testing
Why the PRO380-Mod is the right choice
MID approved
Suitable for billing purposes according to 2014/32/EU.
Modbus RTU
Easy integration into existing control systems.
Direct measurement up to 100 A
No additional current transformer required.
S0 outputs
Forward and reverse for remote reading.
Multiple network types
3P4W, 3P3W (delta/Aron) and 1P2W possible.
24 months warranty
According to the manufacturer with 24 months warranty.
Frequently asked questions
What is the HW group PRO380-Mod 0.25-100A ModBus MID and what is it used for?
The PRO380-Mod is a three-phase energy meter with RS485 Modbus interface that measures voltage, current, power, frequency and power factor per phase. Thanks to MID approval, it is also suitable for billing purposes, e.g. in commercial operations or for sub-metering of three-phase circuits.
Which network types does the meter support?
The PRO380-Mod supports direct connection to a three-phase network with neutral (3P4W), to delta or open-delta/Aron configurations without neutral (3P3W) as well as single-phase operation (1P2W).
How is the meter read out?
The PRO380-Mod can be read out via the RS485 Modbus RTU interface, via the S0 pulse outputs or via the infrared interface with an optical reading head and PC software.
Does the meter require an external current transformer?
No. The PRO380-Mod measures the current directly in the three-phase circuit up to 100 A.
Can the meter be used for two tariffs?
Yes. Via an external 230 V AC voltage at the tariff terminals, switching between tariff T1 and T2 is possible; the energy values are recorded separately.
How is the meter mounted?
The PRO380-Mod is designed for mounting on a 35 mm DIN rail and is connected to the circuit via screw terminals. Installation and connection may only be carried out by qualified specialist personnel.
Questions about the PRO380-Mod 0.25-100A ModBus MID?
Our support team in Germany provides free advice on selection, sensors and configuration.
HW-group PRO380-Mod 0.25-100A ModBus MID
General data
- Three-phase energy meter up to 100 A
- MID-approved energy meter
- Communication via RS-485 / Modbus RTU
- Housing: flame-retardant PC plastic
- Rated voltage (Un): 230/400 V AC (3~)
- Operating voltage: 3 × 230/400 V ±20%
- International standard: EN 50470-1/3
- Accuracy class: B (1% accuracy)
Electrical data
- Basic current (Ib): 5 A (1.5 A for CT version)
- Maximum rated current (Imax): 100 A (6 A for CT version)
- 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 – reactive)
Insulation strength
- AC voltage withstand: 4 kV for 1 minute
- Impulse voltage withstand: 6 kV, 1.2 μs waveform
- Protection class: II
Pulse outputs
- Test output via red LED: 10,000 pulses/kWh
- Pulse rates: 10,000 / 2,000 / 1,000 / 100 / 10 / 1 / 0.1 / 0.01 pulses/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
RS-485 / Modbus communication
- Bus type: RS-485
- Protocol: MODBUS RTU with 16-bit CRC
- Baud rates: 1,200 / 2,400 / 4,800 / 9,600 baud
- Standard baud rate: 9,600 baud
- Address range: 1–247, user-definable
- Maximum bus load: 60 meters per bus
- Range: 1,000 m
Infrared interface
- Infrared wavelength: 900–1000 nm
- Communication distance: direct contact
- Protocol: IEC 62056-21:2002 (IEC1107)
Environmental conditions
- Permissible operating humidity: ≤75%
- Permissible storage humidity: ≤95%
- Operating temperature DC version: -40 to +70 °C
- Operating temperature CT version: -25 to +70 °C
- Degree of protection: IP51
Dimensions & weight
- Height without protective cover: 92.4 mm
- Height: 141 mm
- Width: 70 mm
- Depth: 63 mm
- Weight: 0.39 kg net
Connection data
- Maximum conductor cross-section of the power connections:
- 25 mm² for flexible conductors
- 35 mm² for solid copper conductors
Further data
- MID-approved
- Protection against dust and water ingress: IP51
- The maximum number of meters per bus depends on the converter used, the baud rate and the installation conditions. At higher baud rates, the maximum possible number of meters is reduced.
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
