SDM230-MODBUS ABB Eastron Single-Phase 100 A Modbus Energy Meter
ABB Eastron SDM230-MODBUS is a single-phase 230 V AC multifunction DIN rail energy meter with 100 A direct connection, bidirectional measurement, two pulse outputs and RS-485 Modbus RTU communication.
Why Choose the ABB Eastron SDM230-MODBUS Energy Meter?
The ABB Eastron SDM230-MODBUS is a compact and versatile single-phase direct-connected multifunction energy meter designed for accurate electrical energy measurement and remote monitoring in commercial, residential and industrial installations. Supplied under ABB order code SDM230-MODBUS, this DIN rail mounted meter combines comprehensive electrical measurement with RS-485 Modbus communication.
The SDM230-MODBUS measures active and reactive energy together with voltage, current, active power, reactive power, apparent power, power factor, frequency and maximum demand. It supports bidirectional energy measurement, allowing imported and exported active energy to be monitored independently, while its backlit LCD provides clear local access to measured values.
Designed for single-phase 230 V AC systems, the meter supports direct-connected loads up to 100 A without requiring an external current transformer. Two pulse outputs and an RS-485 Modbus RTU interface enable integration with compatible building management, energy management, AMR and SCADA systems, while its compact 2-module DIN rail housing simplifies installation in electrical distribution panels.
Key Advantages
Compact single-phase direct-connected multifunction energy meter.
100 A maximum direct load eliminates external current transformers in suitable applications.
RS-485 Modbus RTU communication for remote monitoring and system integration.
Measures active and reactive energy together with comprehensive electrical parameters.
Bidirectional measurement records both imported and exported energy.
Two configurable pulse outputs for energy monitoring applications.
Backlit LCD provides clear local viewing of measured parameters.
Compact 2 DIN-module, 36 mm wide housing saves distribution-board space.
Key Features
Eastron SDM230-MODBUS multifunction energy meter.
Single-phase, two-wire direct-connected metering.
230 V AC rated voltage.
10 A rated current and 100 A maximum current.
50/60 Hz operating frequency.
Measures active energy, reactive energy, active power, reactive power and apparent power.
Measures voltage, current, power factor, frequency and maximum demand.
Import and export energy measurement for bidirectional applications.
Active energy accuracy to Class 1 / Class B.
Reactive energy accuracy to Class 2.
RS-485 interface with Modbus RTU communication.
Modbus communication addresses from 1 to 247.
Configurable communication speeds from 1200–38400 bps.
Two pulse outputs for remote energy monitoring.
Backlit LCD display for straightforward configuration and monitoring.
Compact 36 mm wide DIN rail design.
Direct-Connected Energy Monitoring with Modbus
The Eastron SDM230-MODBUS combines direct-connected single-phase metering with comprehensive multifunction measurement. Its 100 A maximum current capability enables suitable circuits to be monitored without external current transformers, while bidirectional measurement provides separate information for imported and exported energy. This makes the meter particularly useful for conventional loads as well as solar PV, EV charging and other installations where energy may flow in both directions.
The integrated RS-485 interface supports Modbus RTU communication, allowing electrical measurements to be transferred to compatible building management, energy management, AMR and SCADA platforms. Two pulse outputs provide additional options for remote monitoring, while the compact two-module DIN rail format allows the meter to be installed efficiently in distribution boards and control panels.
Typical Applications
Single-phase electrical energy monitoring.
Commercial and residential distribution boards.
Industrial energy monitoring and sub-metering.
Solar PV import and export energy monitoring.
EV charging energy measurement.
Building and facility energy management systems.
AMR and SCADA energy monitoring systems.
Modbus-connected automation and data acquisition systems.
Technical Specifications
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Current Input Rating (A)
10 A
Device Type
Energy analyser
Measurement Connection Type
Via CT (/5 A)
Brand
ABB / Eastron
Series
SDM230
ABB reference
B21100MSDM230MODBU
ABB order code / Product ID
SDM230-MODBUS
Product group
DIN Rail Mounted Meters
Product type
Single-phase multifunction energy meter
Number of phases
1-phase
Wiring configuration
1-phase, 2-wire
Connection type
Direct connected
Rated current
10 A
Maximum current
100 A
Minimum current
0.5 A
Starting current
40 mA
Rated voltage
230 V AC
Operational voltage
80–120% of rated voltage
Frequency
50/60 Hz
Active energy accuracy
IEC 62053-21 Class 1 / EN 50470 Class B
Reactive energy accuracy
IEC 62053-23 Class 2
Voltage accuracy
±0.5%
Current accuracy
±0.5%
Frequency accuracy
±0.2%
Active power accuracy
±1%
Reactive power accuracy
±1%
Apparent power accuracy
±1%
Measured parameters
kWh, kvarh, W, var, VA, V, A, PF, Hz and maximum demand
Energy direction
Import and export
Communication interface
RS-485
Communication protocol
Modbus RTU
Modbus address range
1–247
Communication speed
1200–38400 bps
Maximum RS-485 transmission distance
1000 m
Pulse outputs
2
Display
Backlit LCD
Protection rating
IP51
Mounting type
DIN rail
Installation width
2 DIN modules
Width
36 mm
Height
100 mm
Depth
63 mm
Frequently Asked Questions
What is the ABB Eastron SDM230-MODBUS used for?
The SDM230-MODBUS is used to measure single-phase electrical energy and electrical parameters in commercial, residential and industrial installations, with Modbus communication for remote monitoring.
What is the maximum current of the SDM230-MODBUS?
The SDM230-MODBUS supports direct-connected loads up to 100 A, allowing suitable single-phase circuits to be measured without external current transformers.
Does the SDM230-MODBUS support RS-485 Modbus?
Yes. The meter includes an RS-485 interface supporting Modbus RTU, with configurable communication addresses and baud rates for integration with compatible monitoring and automation systems.
Can the SDM230-MODBUS measure imported and exported energy?
Yes. The meter provides bidirectional measurement of imported and exported active energy, making it suitable for applications including solar PV and other systems with bidirectional energy flow.
What electrical parameters does the SDM230-MODBUS measure?
The meter measures active and reactive energy, active power, reactive power, apparent power, voltage, current, power factor, frequency and maximum demand.
Reliable Multifunction Energy Metering
The Eastron SDM230-MODBUS provides compact single-phase multifunction energy measurement with 100 A direct connection, bidirectional metering, pulse outputs and RS-485 Modbus communication for integration into modern energy monitoring systems.
Current Input Rating (A)
10 A
Device Type
Energy analyser
Measurement Connection Type
Via CT (/5 A)
Brand
ABB / Eastron
Series
SDM230
ABB reference
B21100MSDM230MODBU
ABB order code / Product ID
SDM230-MODBUS
Product group
DIN Rail Mounted Meters
Product type
Single-phase multifunction energy meter
Number of phases
1-phase
Wiring configuration
1-phase, 2-wire
Connection type
Direct connected
Rated current
10 A
Maximum current
100 A
Minimum current
0.5 A
Starting current
40 mA
Rated voltage
230 V AC
Operational voltage
80–120% of rated voltage
Frequency
50/60 Hz
Active energy accuracy
IEC 62053-21 Class 1 / EN 50470 Class B
Reactive energy accuracy
IEC 62053-23 Class 2
Voltage accuracy
±0.5%
Current accuracy
±0.5%
Frequency accuracy
±0.2%
Active power accuracy
±1%
Reactive power accuracy
±1%
Apparent power accuracy
±1%
Measured parameters
kWh, kvarh, W, var, VA, V, A, PF, Hz and maximum demand
Energy direction
Import and export
Communication interface
RS-485
Communication protocol
Modbus RTU
Modbus address range
1–247
Communication speed
1200–38400 bps
Maximum RS-485 transmission distance
1000 m
Pulse outputs
2
Display
Backlit LCD
Protection rating
IP51
Mounting type
DIN rail
Installation width
2 DIN modules
Width
36 mm
Height
100 mm
Depth
63 mm
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