Schneider A9MEM3155 IEM3155 Energy Meter, Acti9, 63A - Modbus - 1 digital I - 1

The Schneider Electric A9MEM3155 is the iEM3155 multi-tariff energy meter from the Acti 9 iEM3000 series, supporting direct connection at up to 63 A with Modbus RTU communication via RS485. It measures active, reactive, and apparent energy with sign in 4 quadrants across 3-phase and single-phase networks, and includes 1 digital input and 1 digital output.

Technical specifications:

• Commercial reference: A9MEM3155
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Acti 9 iEM3000
• Product type: Electrical energy meter
• Poles: 3P + N, 1P + N, 3P
• Rated current: 63 A (direct connection)
• Rated voltage: 100...277 V / 173...480 V
• Network frequency: 50/60 Hz
• Measurement range: 0...63 A, max 99999999.9 kWh
• Accuracy class: Class 1 per IEC 62053-21 and IEC 61557-12, Class B per EN 50470-3
• Communication: Modbus RTU (RS485) at 9.6, 19.2, 38.4 kbauds, 4000 V isolation
• Tariff inputs: 4 tariffs supported
• Digital input: 1 (0...5 V / 11...40 V, 24 V DC)
• Digital output: 1 transistor (5...40 V DC, 50 mA)
• Display: LCD with LED indicators
• Sampling rate: 32 samples/cycle
• Mounting: DIN rail, clip-on
• Connection: Screw terminals, 16 mm²
• Overvoltage category: III
• IP rating: IP40 front panel, IP20 body (IEC 60529)
• Pollution degree: 2
• Operating temperature: -25...70°C (IEC) / -25...55°C (MID)
• Storage temperature: -40...85°C
• Operating altitude: less than 3000 m
• Dimensions (W x H x D): 90 x 95 x 69 mm
• Weight: 456 g
• Certifications: CE, UKCA, CULus, EAC, MID, RCM, METAS, NMI, KZ

Features and benefits:

• Measures active, reactive, and apparent energy with sign in 4 quadrants for complete power quality visibility
• Multi-tariff support with up to 4 configurable tariffs for cost allocation and sub-metering applications
• Modbus RTU communication over RS485 with 4000 V galvanic isolation for safe integration
• 1 digital input and 1 transistor digital output for external tariff switching and pulse signaling
• LED indicators for power status, accuracy verification, overload alarm, and Modbus communication activity

Applications:

• Sub-metering and energy cost allocation in commercial and industrial buildings
• Multi-tariff billing for tenants, floors, or building zones
• Energy monitoring in 3-phase and single-phase distribution boards
• Integration into building energy management systems via Modbus RTU

Compliant with IEC 62053-21, IEC 61557-12, EN 50470-3, IEC 61326-1, and IEC 61010-1. Part of the Schneider Electric Acti 9 iEM3000 range.

Also known as: Schneider A9MEM3155, Schneider Electric A9MEM3155, iEM3155 energy meter, Acti 9 multi-tariff meter.