Schneider Electric A9MEM3250 Acti9 iEM3250 Energy Meter CT

A9MEM3250 Acti9 iEM3250 DIN-rail energy meter for CT connection

The A9MEM3250 is a Schneider Electric product listed in the datasheet as: iEM3250 energy meter – CT – Modbus. The A9MEM3250 (iEM3250) is a three-phase DIN-rail energy meter for use with current transformers. It measures active energy with class 0.5S accuracy and communicates over Modbus RS485, making it useful for sub-billing and cost allocation. Seven Star LLC supplies the A9MEM3250 in Oman and the GCC as an independent supplier based in Muscat.

Reading the reference: A9MEM is the Acti9 energy-meter family code and 3250 the iEM3250 model with CT inputs and Modbus. The datasheet lists 3P, 3P+N and 1P+N network types.

Technical specifications of the A9MEM3250

Measurement, accuracy and display of the A9MEM3250

Measured quantities: Active energy; Current; Voltage; Active power. Accuracy class: Class 0.5S active energy IEC 62053-22; Class 0.5S active energy IEC 61557-12. CT secondary: 5A; 1A. Voltage: 100 to 277 V; 173 to 480 V. Display: LCD display. Sampling: 32 samples/cycle. Protocol: Modbus RTU 9.6, 19.2 and 38.4 kbauds even/odd or none 4000 V. Counter range: 99999999 MWh.

The meter counts energy locally and keeps its counters in non-volatile memory, so a power outage does not lose billing data. It reads current from external transformers of 1 A or 5 A secondary, which allows monitoring of large feeders in a small enclosure.

The A9MEM3250 in a DIN-rail metering layout

As a DIN-rail device it sits in the distribution board beside Acti9 circuit breakers. Other iEM3000 models include direct-connected versions and pulse-output versions; this CT version covers feeders above the direct limit.

Communication is Modbus RTU on RS485; a gateway can bring the data onto Ethernet for a supervisory system.

Selection checklist for the A9MEM3250

• Feeder current and the matching CT ratio.
• Accuracy class 0.5S sufficient.
• Modbus RS485 availability.
• Network type: 3P, 3P+N or 1P+N.
• Panel space: DIN rail module width.
• Whether a certified revenue meter is required by the utility.

Installing and commissioning the A9MEM3250

Clip onto the rail, wire the CT secondaries (observing polarity), voltage inputs with protective fuses, and the RS485 pair. Set the CT ratio and network type from the front buttons.

Check that the power direction is positive for a load; swap CT leads if negative. Record initial counters at handover.

Typical applications of the A9MEM3250 in Oman and the GCC

Tenant sub-billing, cost allocation in industrial parks, building energy management and large HVAC plant monitoring in the region.

Dimensions, environment and approvals of the A9MEM3250

For the A9MEM3250, plan the mounting space from the datasheet: 90 mm (W) x 95 mm (H) x 69 mm (D). Mounting, derating and enclosure choices follow the environmental data below, which should be compared with the actual panel temperature and the dust and humidity of the site in Oman and the GCC.

Ambient temperature limits in the datasheet: -25 to 70 °C – IEC. Relative humidity: 5 to 95 % 50 °C. Ingress protection: IP40 front panel: conforming to IEC 60529; IP20 body: conforming to IEC 60529. Operating altitude: < 3000 m. Standards listed: BS EN 61557-12:2021; IEC 61557-12:2021; EN 61557-12:2021; BS EN 61326-1; IEC 61326-1; EN 61326-1; BS EN 62052-11:2020; IEC 62052-11:2020. Certifications listed for this reference: CE IEC 61010-1 safety; CE EN 61557-12 power monitor; CE EN/IEC 61326-1 EMC; UKCA BS EN 61010-1 safety; UKCA BS EN 61557-12 power monitor.

Information to send with an RFQ for the A9MEM3250

• Full reference and quantity required
• Existing equipment, panel or rack it must fit
• Supply voltage, load or signal details of the application
• Required delivery location and timing
• Whether a spare, a replacement or a new installation

Site conditions in Oman for the A9MEM3250

Electrical rooms and outdoor panels in the Gulf often operate well above the 25 °C reference temperature used in many catalogues. Before you finalise the A9MEM3250, compare the expected panel temperature with the operating range and any output derating stated in the manufacturer documentation, and leave the recommended clearance above and below the device for convection. Supply quality also varies between sites, so confirm the input voltage range, frequency and any requirements for protection on the supply side.

Where the device feeds or monitors critical loads, plan how faults will be signalled to the control system and how a replacement can be installed quickly. Keeping one spare A9MEM3250 per site and recording its settings helps maintenance teams in Oman restore service with minimum downtime.

Documents and quotation

A datasheet for this product is attached on this page. It lists the electrical, mechanical and environmental data summarised above.

Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and does not represent itself as an official channel of the manufacturer.