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  • SDM120A MID Certificated 45A 230V Analog Display Single Phase kWh Meter

    • Analog display
    • one pulse output
    • 17.5 mm width 1 modual 
    • 45A direct connection
    • Class 1.0 accuracy
    • 35mm Din rail Mounted 

    • Description
    • Diagram
    • Manual Download


    The SDM120D “with a LCD screen for prefect reading”, the SDM120DB has white backlit, and the SDM120A with an electromechanical register, are used to measure single-phase like residential, utility and Industrial application. The meter measures active energy meter (kWh) with a pulse output. 

    General Specifications

    Voltage AC (Un) 230V
    Voltage Range  176~276V AC
    Base Current (Ib)   5A
    Max. Current (Imax) 45A
    Mini Current (Imin)  0.25A
    Starting current  0.4% of Ib
    Power consumption  <2W/10VA
    Frequency   50/60Hz(±10%)
    AC voltage withstand  4KV for 1 minute
    Impulse voltage withstand  6KV-1.2uS wavform
    Overcurrent withstand  30Imax for 0.01s
    Pulse output rate  1000imp/kWh 
    Display  SDM120D LCD 
    SDM120DB LCD with Backlit
    SDM120A electromechanical register
    Max. Reading of SDM120D   99999.9kWh
    Max. Reading of SDM120A   99999.9kWh
    Active energy   Class 1 IEC62053-21
    Class B EN50470-3


    Operating temperature  -25℃ to +55℃
    Storage and transportation temperature -40℃ to +70℃
    Reference temperature 23℃±2℃
    Relative humidity   0 to 95%, non-condensing
    Altitude  up to 2500m
    Warm up time  10s
    Mechanical Environment M1
    Electromagnetic environment E2
    Degree of pollution  2

    Pulse Output

    The meter provides a pulse output, which is passive type. The constant is 1000imp/kWh.


    Pulse output must be fed as shown in the wring diagram below. Scrupulously respect polarities and the connection mode.

    Opto-coupler with potential-free SPST-NO Contact

    Contact range: 5~27VDC  Max. current Input: 27mA DC


    Din rail dimensions 36x90x62 (WxHxD) DIN 43880

    Mounting DIN rail 35mm

    Sealing IP51 (indoor)

    Material self-extinguishing UL94V-0