Schneider Electric A9MEM3275 iEM3275 Energy meter CT LON 1 digital multi-tariff MID

The Schneider Electric A9MEM3275 (iEM3275) is a CT-connected three-phase energy meter from the Acti9 iEM3000 range, designed for sub-billing, cost allocation, and multi-tariff energy measurement in commercial buildings, data centres, healthcare facilities, and industrial installations. It communicates via a LON (LonWorks TP/FT-10) network and is MID approved for fiscal metering applications.

• Product range: Acti9 iEM3000
• Current input: Current transformer (CT), 1 A or 5 A secondary
• Rated voltage: 100–277 V (1P+N) / 173–480 V (3P / 3P+N); 50 Hz or 60 Hz
• Pole configurations: 3P, 3P+N, 1P+N
• Accuracy class: Class 0.5S active energy (IEC 62053-22, IEC 61557-12); Class C active energy (EN 50470-3); MID approved
• Measured quantities: Active, reactive and apparent energy (signed, four-quadrant); active and reactive power; current; voltage
• Communication: LON via LonWorks TP/FT-10; 3,750 V isolation
• Tariff input: 4 tariffs; 1 digital input 0–5 V / 11–40 V (24 V DC)
• Sampling rate: 32 samples/cycle; maximum display value 99,999,999 MWh
• Display: LCD
• Mounting: Clip-on to DIN rail; screw terminals — current circuits 6 mm², voltage circuits 2.5 mm²
• Local signalling: Green LED (power on), yellow flashing LED (accuracy check), overload alarm
• Overvoltage category: III
• Standards: IEC/EN/BS EN 61557-12:2021, IEC 62053-22:2020, EN 50470-3, IEC 62052-11:2020, IEC 62053-21, IEC 62052-22, IEC 62052-23, IEC 61326-1