The LE-03MB is a static (electronic), calibrated alternating current power meter for direct measurement, suitable for single-phase or three-phase connection.

• Meter type: bidirectional meter with 4 quadrants.
• Connectivity: features an M-Bus port and protocol, enabling remote reading via wired M-Bus network.
• Configuration: performed via the front panel menu or through the communication port according to M-Bus functions.
• Functions: three-phase, bidirectional (4 quadrants) direct measurement up to 100 A.
• Display: kWh/kvar (consumed/generated energy), network parameters.
• Compliance: with MID.
• Backlit display: multifunction LCD.
• Configuration protection: with password.

Measured values: Active energy AE+/AE- [kWh], Reactive energy RE+/RE- [kvarh], Phase voltages U1, U2, U3 [V], Phase currents I1, I2, I3 [A], Frequency F [Hz], Active power P [W], Reactive power Q [var], Apparent power S [VA], Power factor cosϕ, Harmonics THD.

Technical specifications:

• Reference voltage: 3×230/400V+N.
• Basic current: 0.5÷10A.
• Maximum current: 100A.
• Minimum measurable current: 0.04A.
• Measured voltage: L-N 100÷289V AC, L-L 173÷500V AC.
• Measurement accuracy (IEC61036): class 1.
• Overload capacity: 30×lmax/10ms.
• Insulation: 4kV/1min, 6kV/1μs.
• Display range: 0÷99999.99kWh.
• kWh meter constant: 0.01, 0.1, 10, 100 imp/kWh.
• kvarh meter constant: 0.01, 0.1, 10, 100 imp/kvar.
• Reading indicator: 2×LED.
• kWh/kvarh pulse duration: 60, 100, 200 ms.
• Operating temperature: -20÷55°C.
• Connection: screw terminals 25mm².
• Dimensions: 4.5 units (76mm).
• Mounting: TH-35 mm rail.
• Protection rating: IP51.