
3-phase energy meter via CT | x/1 A and x/5 A | 3×230/400 V | Modbus RS-485 | DIN | Schneider Electric Acti9 iEM3250 | A9MEM3250
Code: A9MEM32503-phase energy meter connected via current transformers x/1 A or x/5 A, Modbus RTU RS-485, active energy class 0.5S.
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3-phase energy meter via CT | x/1 A and x/5 A | 3×230/400 V | Modbus RS-485 | DIN | Schneider Electric Acti9 iEM3250 | A9MEM3250
Schneider Electric Acti9 iEM3250 A9MEM3250 is a modular 3-phase energy meter connected via external current transformers x/1 A or x/5 A. It is designed for higher-current circuits where a direct meter cannot be used, with data transferred over Modbus RS-485.
Key point:
iEM3250 is a simple and accurate solution for measuring active energy and basic network values via CTs and passing them to a control system over Modbus. For MID billing metering choose iEM3255.Connection
via CT x/1 A or x/5 AAccuracy
cl. 0.5S (IEC 62053-22)Communication
Modbus RTU RS-485MID
NoOperating principle
The meter is mounted on a DIN rail. Current circuits are connected via external current transformers, voltage circuits directly or via voltage transformers.
The CT ratio (primary current up to 32,767 A) and network type – 3P, 3P+N or 1P+N – are set in the meter.
The device counts active energy (total, partial and per phase) and shows current, voltage, power, power factor and frequency.
Why choose iEM3250?
Accurate active energy metering via CTs and easy integration into SCADA or BMS over Modbus.Technical specifications
Product type 3-phase energy meter via current transformers Manufacturer / code Schneider Electric / A9MEM3250 Model Acti9 iEM3250 Current input via CT x/1 A or x/5 A CT primary current 1…32,767 A Voltage 100…277 V L-N / 173…480 V L-L, 50/60 Hz Voltage transformers supported Network types 3P, 3P+N, 1P+N Measured values active energy (total, partial, per phase), current, voltage, active power, power factor, frequency Accuracy class active energy 0.5S (IEC 62053-22), class C (EN 50470-3) MID No Tariffs none Inputs / outputs none Communication Modbus RTU, RS-485, 9.6 / 19.2 / 38.4 kbaud Display LCD Terminals current – 6 mm², voltage – 2.5 mm² Width 5 modules (90 mm) Dimensions 90 × 95 × 69 mm Protection IP40 front / IP20 housing Operating temperature −25…+70 °C Overvoltage category III Mounting 35 mm DIN rail Main functions
- Connection via CT x/1 A and x/5 A – suits any incomer current.
- Active energy class 0.5S – accurate consumption metering.
- Modbus RTU RS-485 – data to SCADA, BMS or energy management.
- Partial counter – energy for a selected period.
- Per-phase metering – easier to spot load imbalance.
Where is it used?
- Building and plant incomers with current transformers
- Tenant and zone metering
- PV generation and consumption metering
- Energy monitoring of production lines
- Energy management and BMS systems
- Panel building and retrofit
Use by need
For the facility manager.
Shows real consumption and allows remote monitoring.For the automation / SCADA integrator.
Modbus RTU registers make the meter quick to integrate.For the installing electrician.
5-module DIN housing and clear CT ratio setting – easy installation.Practical use
If a production line needs energy metering via 400/5 A current transformers shown in SCADA, iEM3250 is connected via CTs, the ratio 400/5 is set and the data is read over Modbus RS-485.Pros
- Connection via CT x/1 A and x/5 A
- Accuracy class 0.5S
- Modbus RTU RS-485
- Compact – 5 modules
- Simple configuration
Cons / limitations
- No MID – for billing choose iEM3255
- Does not measure reactive energy
- No tariffs or pulse output
- External current transformers required
Safety and installation notes
- Switch off and verify absence of voltage before wiring.
- Never open CT secondary circuits under load – use shorting terminals.
- Observe CT direction (P1→P2) and phase matching with the voltage inputs.
- Protect voltage circuits as specified by the manufacturer.
- Installation must be done by a qualified electrician.
Quick selection guide
CT x/1 A, x/5 A3×230/400 Vcl. 0.5SModbus RS-4855 mod. DINno MIDSuitable when you need:- Metering energy via current transformers
- Transferring data over Modbus
- Consumption monitoring without billing metering
Check before use:- CT ratio and secondary current (1 A or 5 A)
- Network type (3P / 3P+N / 1P+N)
- Modbus address and baud rate
Important reminder: The meter does not protect the line – it requires current transformers and protection of the voltage circuits.☝ Elsprendimai.eu recommends:- ELEQ TQ50-L / TQ40 or Schneider PowerLogic HJ / HM current transformers
- For harmonics and alarms – PM5110 power analyser
FAQ
Can it be connected directly?
No – it connects only via current transformers x/1 A or x/5 A.Is it MID approved?
No – the MID version is iEM3255.What communication?
Modbus RTU over RS-485.How many modules?
5 modules (90 mm) on a DIN rail.Does it measure reactive energy?
No – active energy only.Can it be used with 1 A CTs?
Yes – x/1 A and x/5 A transformers are supported.Documents
- Schneider Electric A9MEM3250 – produkto puslapis – checked 2026-10-19
- iEM3100/3200/3300 vartotojo vadovas DOCA0005EN – checked 2026-10-19
3-phase energy meter via CT | x/1 A and x/5 A | 3×230/400 V | Modbus RS-485 | DIN | Schneider Electric Acti9 iEM3250 | A9MEM3250
Schneider Electric Acti9 iEM3250 A9MEM3250 – 3-phase CT meter x/1 A and x/5 A, class 0.5S, Modbus RS-485. Accurate energy metering and integration into control systems.
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.ManufacturerThe IP protection class indicates the device's resistance to environmental factors.

The first digit indicates protection against dust and solid objects.
The second digit indicates protection against moisture.First digit values:
X — Untested;
0 — No protection;
1 — Protected against solid objects larger than 50 mm;
2 — Protected against solid objects larger than 12.5 mm;
3 — Protected against solid objects larger than 1 mm;
4 — Protected against solid objects larger than 1 mm;
5 — Dust protected;
6 — Totally dustproof.
Second digit values:X — Untested;
0 — No protection;
1 — Protected against vertically falling water drops;
2 — Protected against water drops falling at a 15º angle;
3 — Protected against rain falling at a 60º angle;
4 — Protected against water splashes;
5 — Protected against water jets;
6 — Protected against large amounts of water;
7 — Protected against short-term immersion in water up to 1 meter deep;
8 — Protected against long-term immersion in water up to 3 meters deep.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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