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  • New item   Three-phase Tuya Wi-Fi smart bi-directional energy meter with protections | 3 CT up to 120 A | RS485 | DIN | EARU EASEM-G-TY-W
    New item   Three-phase Tuya Wi-Fi smart bi-directional energy meter with protections | 3 CT up to 120 A | RS485 | DIN | EARU EASEM-G-TY-W 1
    New item   Three-phase Tuya Wi-Fi smart bi-directional energy meter with protections | 3 CT up to 120 A | RS485 | DIN | EARU EASEM-G-TY-W 2

    Three-phase Tuya Wi-Fi smart bi-directional energy meter with protections | 3 CT up to 120 A | RS485 | DIN | EARU EASEM-G-TY-W

    Code: ESEASEM-G-TY-W5
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    Price 85.96 € VAT incl.
    ( 71.04 € VAT excl. )
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    Three-phase smart energy meter with three split-core CTs up to 120 A, bi-directional metering, voltage, current and leakage protection functions, relay output for a contactor, Tuya Wi-Fi and RS485. For home, solar plant and small commercial boards.

  • Product description

    Three-phase Tuya Wi-Fi smart bi-directional energy meter with protections | 3 CT up to 120 A | RS485 | DIN | EARU EASEM-G-TY-W

    EARU EASEM-G-TY-W is a three-phase smart energy meter and network protection module in one DIN housing. Current is measured with three split-core current transformers (CT) up to 120 A, energy is metered in both directions, and data is sent in real time to the Tuya Smart app via Wi-Fi.

    Key point:
    The meter is installed without cutting power cables – the CTs clip onto the phase conductors. It shows how much energy is consumed and how much is exported to the grid, and in case of overvoltage, undervoltage, overcurrent or leakage it commands a contactor via its relay output to disconnect the load.
    Current measurement
    3 CT up to 120 A
    Metering
    Bi-directional (import / export)
    Communication
    Tuya Wi-Fi + RS485
    Mounting
    35 mm DIN rail, 73 mm

    Operating principle

    The meter is mounted on a DIN rail in the distribution board. Voltage is measured directly via terminals V1, V2, V3 and Vn, and phase currents via three split-core CTs clipped onto the L1, L2 and L3 conductors. The device itself is powered via terminals L and N, so power cables do not need to be disconnected.

    Based on CT direction, the meter separates energy imported from the grid and exported to it, making it suitable for solar and hybrid systems. The colour display shows kWh, power (kW), voltage (V), current (A), power factor (PF), frequency (Hz) and leakage current (mA).

    When set limits are reached, the relay output (RO/R1) switches and controls an external contactor or shunt trip. Leakage current is measured via a separate residual current transformer connected to terminals IB1/IB2. Data and alerts are sent to the Tuya Smart app, and the RS485 interface (A/B) allows connection to other systems.

    Why EASEM-G-TY-W?
    One module replaces a separate three-phase meter, voltage relay and leakage monitor – and everything can be viewed and controlled from a phone.

    Technical specifications

    Product type Three-phase smart bi-directional energy meter with protection functions
    Manufacturer / model EARU Electric / EASEM-G-TY-W
    Network Three-phase, 3×230/400 V AC
    Current measurement 3 split-core current transformers (CT) up to 120 A
    Measured parameters kWh (both directions), kW, V, A, PF, Hz, leakage current mA
    Accuracy ±1 %
    Protection functions Overvoltage, undervoltage, current limit, leakage current
    Control output Relay contact RO/R1 – for controlling an external contactor or shunt trip
    Inputs Digital input DI1/DIC; residual current transformer input IB1/IB2
    Communication Wi-Fi (Tuya Smart / Smart Life), RS485 (A/B)
    Display Colour LCD, 4 buttons, status LEDs L1, L2, L3, Wi-Fi, REV, Relay
    Self-consumption ≤ 1.5 W
    Operating temperature –10 °C … +55 °C
    Storage temperature –40 °C … +70 °C
    Relative humidity 5–95 % (non-condensing)
    Dimensions 73 × 107 × 59 mm (with terminal blocks)
    Mounting 35 mm DIN rail, removable (plug-in) terminal blocks
    Standards / marking IEC 62053-21, CE
    Package contents Meter, 3 split-core CTs up to 120 A

    Main functions

    • Bi-directional metering – see consumed and exported energy separately.
    • Split-core CT measurement – installation without disconnecting or rerouting power cables.
    • Voltage and current protection – the relay output disconnects the load via a contactor when set limits are exceeded.
    • Leakage monitoring – with a residual current transformer it displays and monitors leakage in mA.
    • Tuya Smart app – real-time data, history, alerts and remote relay control.
    • RS485 interface – option to connect to other control or monitoring systems.
    • Colour display – main parameters visible in the board without a phone.

    Where is it used?

    • Three-phase main boards in houses and homesteads
    • Solar power plant production and export monitoring
    • Hybrid systems with batteries
    • Small commercial sites, shops, workshops
    • Farms and farm buildings with three-phase loads
    • Rented premises – remote consumption control
    • Upgraded old boards with no space for a direct-connected meter

    Use by need

    For solar plant owners.
    See on the phone how much was produced, self-consumed and exported.
    For electricians.
    Install metering and protection in one module without interrupting the power circuit.
    For facility managers.
    Receive alerts on voltage faults and leakage and disconnect the load remotely.

    Practical application

    If a homestead has a 10 kW solar plant and a three-phase supply, the CTs are clipped onto the incoming phase conductors and the relay output is wired to the load contactor coil. The app then shows actual consumption and export, and if the neutral is lost or voltage rises above the set limit, the contactor automatically disconnects sensitive equipment.

    Pros

    • Three-phase bi-directional metering
    • Split-core CT installation without cutting power cables
    • Voltage, current and leakage protection functions
    • Relay output for contactor control
    • Tuya Wi-Fi and RS485 communication
    • Colour display with main parameters
    • Low self-consumption (≤ 1.5 W)

    Cons / limitations

    • The relay does not switch the power circuit directly – a contactor or shunt trip is required
    • Leakage measurement requires a residual current transformer
    • No MID certificate – not for billing
    • Remote monitoring requires stable Wi-Fi at the board
    • For currents above 120 A choose the 200, 300, 500, 750, 1000 A CT version

    Safety and installation notes

    • Installation must be done by a qualified electrician with voltage disconnected and verified absent.
    • Protect the voltage measuring terminals (V1–V3, Vn) and supply (L, N) with circuit breakers or fuses.
    • Clip each CT onto the correct phase following the arrow direction – otherwise bi-directional metering will be wrong.
    • Connect each CT to its own I1, I2, I3 terminals and do not mix up phase order.
    • Connect the relay contact only to the contactor coil or shunt trip control circuit, never to the power circuit.
    • Do not install the meter in an open damp location – only in a closed board.

    Quick selection guide

    3 phases
    CT up to 120 A
    Bi-directional
    Tuya Wi-Fi + RS485
    Suitable when you need:
    • to monitor three-phase consumption and solar export on a phone
    • to protect a site from voltage faults via a contactor
    • to install a meter without rerouting power cables
    Check before use:
    • that the maximum phase current does not exceed 120 A
    • that 2.4 GHz Wi-Fi is available at the board
    • that you have a contactor if automatic load disconnection is needed
    • that you have a residual current transformer if leakage monitoring is needed
    Important reminder: this device does not replace circuit breakers, residual current (RCD) protection or a billing (MID) meter.

    FAQ

    Does the meter disconnect the load itself?
    No, it has a relay contact that controls an external contactor or shunt trip.
    What is the maximum measurable current?
    With the supplied CTs – up to 120 A per phase.
    Is it suitable for a solar plant?
    Yes, bi-directional metering shows consumed and exported energy separately.
    Which app does it work with?
    Tuya Smart or Smart Life via Wi-Fi.
    Can it be used for billing with the supplier?
    No, the meter has no MID certificate and is intended for internal metering and monitoring.
    How much space does it take in the board?
    The housing is 73 mm wide and mounts on a 35 mm DIN rail.

    EARU EASEM-G-TY-W three-phase Tuya Wi-Fi bi-directional meter with CT up to 120 A

    Three-phase smart energy meter with three split-core CTs up to 120 A, bi-directional metering, voltage, current and leakage protection functions, relay output for a contactor, Tuya Wi-Fi and RS485. For home, solar plant and small commercial boards.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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