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3 Phase Multi-function Over Under Voltage Protector with Energy Metering

3 phase multi-function over under voltage protector with real-time voltage & current display and built-in energy metering. Adjustable protection settings safeguard industrial, commercial and solar three-phase power equipment from grid faults and overload damage.

    Gerenal

    The RCB-03 series is a microcontroller-based transfer solution designed 

    for reliable power management. It ofers a wide range of features, includ-

    ing a “Priority” phase selection, overoltage and underoltage protection, overcurrent protection, parameter setting via knobs, LED indication for 

    operating voltage, and Din-rail mounting. This series is widely applicable 

    across residential, commercial, and industrial environments.

    Feature

    *Automatic transfer     
    *Priority phase       

    *Signal feedback         
    *V/A protection       

    *Adjustable V/A       

    *Auto reconnect

    Basic technical parmeters

    Model and Specificaion RCB-03
    Rated Frequency 40/50/60/70Hz
    Rated Supply Voltage AC 3*220V (N-L1/L2/L3)
    Rated Current 63A 80A 100A
    Maximum Operating Current Imax 63A 80A 100A
    Over-Voltage Range 230-300V
    Under-Voltage Range 140-210V
    Voltage measurement accuracy
    >U and 0.1S; ≥ 350V: 0.02S
    Electrical life 100,000 times
    Mechanical life 1,000,000 times
    Altitude ≤ 2000m
    Ambient Temperature ‘-25℃ ~+50℃
    Permissible relative humidity ≤ 50% at 40° C ( without condensation)
    Storage temperature -25° C~+55° C
    Installation Standard Rail 35mm

    Front-Face Panel

    RCB-03

    Wiring Diagram

    RCB-03-1

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