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  • New item   Modular three-phase energy meter | 100 A | 3×230/400 V | 1 tariff | S0 pulse output | DIN | Zamel LEM-30
    New item   Modular three-phase energy meter | 100 A | 3×230/400 V | 1 tariff | S0 pulse output | DIN | Zamel LEM-30 1

    Modular three-phase energy meter | 100 A | 3×230/400 V | 1 tariff | S0 pulse output | DIN | Zamel LEM-30

    Code: LEM-30
    Barcode: 5903669207092
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    Price 49.17 € VAT incl.
    ( 40.64 € VAT excl. )
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    A simple direct-connected three-phase meter for 3×230/400 V networks up to 100 A, accuracy class 1 to IEC 62053-21. It shows consumed active energy in kWh and has an S0 output at 1000 imp/kWh. Intended for non-billing (internal) metering – the manufacturer does not state MID.

  • Product description

    Modular three-phase energy meter | 100 A | 3×230/400 V | 1 tariff | S0 pulse output | DIN | Zamel LEM-30

    The Zamel LEM-30 is a modular three-phase energy meter for direct connection to 3-phase 4-wire 3×230/400 V networks up to 100 A. It is designed for internal metering in commercial and industrial sites, workshops or home circuits where you need to know how much a specific line or machine consumes.

    Key point:
    The meter measures active energy with accuracy class 1 (IEC 62053-21) and shows it on a backlit LCD. It connects directly up to 100 A without current transformers, and the S0 output at 1000 imp/kWh passes readings to a controller or pulse counting system. A simple, no-configuration solution – but without MID, so it is not for billing third parties.
    Max. current
    100 A
    Network
    3×230/400 V
    Accuracy class
    1
    Pulses
    1000 imp/kWh
    ℹ
    Bidirectional metering
    The manufacturer does not state whether energy fed back to the grid is recorded separately – there is one active energy register. If import and export must be separated, choose a bidirectional model such as the Orno OR-WE-517.

    Communication interfaces and integration

    S0 pulse output
    Open-collector (OC) output 12–27 V DC, <27 mA, 90 ms pulse, 1000 imp/kWh – connects to a PLC, pulse counter, data logger or a Home Assistant pulse input.
    RS485 / Modbus
    Not available – readings are taken from the display or via S0 pulses.

    Operating principle

    The meter mounts on a TH35 DIN rail and connects directly: L1, L2, L3, N inputs (1–4) and outputs (5–8). Main terminals accept 4–25 mm² conductors.

    It measures three-phase active energy and accumulates it in one register; a red LED flashes in proportion to the load and S0 pulses are generated at the same rate.

    The result is consumed energy in kWh on the backlit LCD (5+2 digits) plus a pulse signal for automation.

    Why choose the Zamel LEM-30?
    It separates the consumption of one line, machine or room up to 100 A cheaply and clearly, without current transformers. Sealable terminal covers protect against tampering.

    Technical specifications

    Product type Modular three-phase energy meter
    Manufacturer / model Zamel LEM-30
    Connection Direct, 3-phase 4-wire (L1, L2, L3, N)
    Voltage 3×230/400 V AC
    Frequency 50/60 Hz
    Base / max. current 10 A / 100 A
    Accuracy class 1 (IEC 62053-21)
    MID Not stated – for non-billing (internal) metering
    Tariffs 1
    Measured values Active energy (kWh)
    Interfaces S0 pulse output (OC)
    Pulse constant 1000 imp/kWh
    Pulse output 12–27 V DC, <27 mA, 90 ms
    Display LCD 5+2 digits, backlit; red LED
    Own consumption 10 VA / 2 W
    Modules / dimensions 4 modules, 72×100×66 mm
    Conductor cross-section 4–25 mm²
    Operating temperature −25…+55 °C
    Mounting TH35 DIN rail
    Standards IEC 62053-21, EN 50470-1, EN 50470-3

    Main functions

    • Direct measurement up to 100 A – no current transformers
    • Accuracy class 1 – sufficient for internal cost control
    • S0 output 1000 imp/kWh – data for a PLC or monitoring system
    • Backlit LCD – readable in the panel
    • LED indication – shows load intensity
    • Sealable terminal covers – tamper protection

    How does it differ from similar models?

    Ollo 3P-351 / ESTXM302 Also simple 100 A direct-connected models without communication – the choice comes down to brand and price.
    Orno OR-WE-520 80 A, but with MID and class B – when readings are used for billing.
    Eastron SDM630-MT 100 A, MID, RS485 Modbus, 4 tariffs – when remote reading and network parameters are needed.
    ELGAMA GAMA 300 100 A, 4 tariffs, billing-grade meter – when multi-tariff metering is required.

    Where is it used?

    • Internal metering of lines and machines in industry
    • Workshops and service centres
    • Energy tracking of three-phase heat pumps, boilers, compressors
    • Farm buildings and warehouses
    • Construction site boards
    • Monitoring of three-phase home supplies

    Use by need

    For energy managers.
    A clear view of what a single line or machine consumes.
    For electricians.
    Simple 3P+N wiring up to 100 A, nothing to configure.
    For automation engineers.
    S0 at 1000 imp/kWh straight into a PLC or data logger.

    Practical use

    If you want to know how much a three-phase compressor or heat pump uses each month, install the LEM-30 on its circuit in the panel and wire the S0 output to a PLC – consumption is visible without current transformers or the cost of MID.

    Pros

    • Direct connection up to 100 A
    • Accuracy class 1
    • S0 output 1000 imp/kWh
    • Backlit LCD
    • Sealable terminal covers
    • Wide operating range −25…+55 °C

    Cons / limitations

    • No MID – for billing choose the Orno OR-WE-520 or Eastron SDM630-MT
    • No RS485 / Modbus – for remote reading see the Eastron SDM630-MT
    • Single tariff
    • Manufacturer does not state export metering – for separate import/export metering see the Orno OR-WE-517

    Safety and installation notes

    • Installation and wiring must be done by a qualified electrician with the supply isolated
    • Size conductors (4–25 mm²) and protection for the load and the 100 A limit
    • Follow the input (1–4) and output (5–8) wiring diagram
    • Do not load the S0 output above 27 mA and 27 V DC
    • Fit the terminal covers and seal them if required

    Quick selection guide

    100 A direct
    Class 1
    S0 1000 imp/kWh
    No MID, 1 tariff
    Suitable when you need:
    • Internal consumption metering
    • Direct connection up to 100 A
    • A pulse signal for automation
    Check before use:
    • That MID is not required for billing
    • That the network is 3×230/400 V with N
    • That conductors fit the 4–25 mm² terminals
    Important reminder: The meter is not MID certified – its readings are not valid for official billing. It also does not replace circuit breakers, RCDs or surge protection.

    FAQ

    Is the LEM-30 MID certified?
    The manufacturer does not state MID, so the meter is intended for internal metering.
    What is the pulse constant?
    1000 imp/kWh.
    Are current transformers needed?
    No, it connects directly up to 100 A.
    Does it have Modbus?
    No, only an S0 pulse output.
    How many modules does it take?
    4 DIN rail modules.
    Does it measure energy exported to the grid?
    The manufacturer does not state export metering – choose a bidirectional model for that, e.g. the Orno OR-WE-517.

    Zamel LEM-30 – three-phase 100 A meter for internal metering

    The Zamel LEM-30 is a direct-connected three-phase 10(100) A meter with class 1, S0 at 1000 imp/kWh and a backlit LCD for internal energy cost metering.

    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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