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Victron 100A ET112 Single Phase Energy Meter

Direct 100A, RS485 Modbus, DIN-Rail Mount for ESS & GX Devices


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DESCRIPTION

Victron ET112 Single Phase Energy Meter: Precision Monitoring for GX and ESS Systems

Accurate 100A Direct-Connect Meter for Grid, PV, and Generator Applications

The Victron ET112 Energy Meter (part number REL300100000) is a compact, DIN-rail mounted device engineered for precise single-phase energy measurement in Victron Energy ecosystems. Designed and manufactured by Carlo Gavazzi to Victron’s specifications, this meter provides real-time data on grid import/export, PV inverter output, or AC generator performance, making it an essential component for Energy Storage Systems (ESS) and advanced energy management.

With a direct connection range up to 100A, the ET112 eliminates the need for external current transformers, simplifying installation and reducing potential points of failure. Its RS485 Modbus RTU interface ensures seamless integration with Victron GX devices, such as the Color Control GX or Cerbo GX, via wired USB or wireless Zigbee connections.

Key Applications

  • Grid Meter for ESS: Enables precise control of grid feed-in and consumption, optimising self-consumption and battery charging strategies.
  • PV Inverter Monitoring: Measures AC output from solar inverters, providing visibility into total system production.
  • AC Genset Measurement: Monitors generator output for reliable backup power management.

Why the ET112 Matters for Your Energy System

In a Victron ESS, accurate energy data is critical. The ET112 acts as the system’s eyes on the grid connection point, allowing the GX controller to make intelligent decisions about when to charge batteries, feed power back to the grid, or draw from the grid. Without a reliable meter, an ESS cannot effectively balance loads, leading to inefficient energy use or unexpected grid draw. The ET112’s Class 1 active energy accuracy (±0.5% RDG for current/voltage) ensures your system operates with the precision needed for optimal performance.

Compared to generic energy meters, the Victron ET112 offers native integration with the Victron Remote Management (VRM) portal and local GX interface, providing a unified view of all energy flows without complex configuration. Its dual RJ45 RS485 ports allow for daisy-chaining or flexible wiring topologies, while the frontal optical port enables quick configuration via the Carlo Gavazzi UCS software.

Installation and Connectivity

The ET112 mounts on a standard 35mm DIN rail and occupies only 1 module width (35mm), saving valuable enclosure space. Connection to a GX device is straightforward:

  • Wired: Use the Victron RS485 to USB interface cable (available in 1.8m or 5m lengths), extendable up to 100 metres with twisted-pair wiring.
  • Wireless: Add a Zigbee module for cable-free communication, ideal for retrofit installations.

Wiring for grid metering requires the meter to be placed at the service entrance, while PV or generator measurement is done at the inverter or genset output. The GX device automatically detects the ET112 and allows you to assign its role (Grid Meter, PV Inverter, or Generator) through the intuitive menu.

Built for Reliable, Long-Term Operation

The ET112 is designed for indoor use in temperatures from -25°C to +65°C, with a robust IP20-rated housing that protects against dust and accidental contact. Its self-powered design draws minimal energy (≤1.0 W, ≤8 VA) from the measured circuit, ensuring it doesn’t impact your system’s efficiency. The meter also includes a digital input for tariff management, allowing you to track energy usage across two different rate periods.

Take Control of Your Energy Data

Whether you’re commissioning a new Victron ESS, retrofitting an existing solar installation, or adding generator monitoring, the Victron ET112 provides the accurate, real-time data you need to maximise self-consumption and reduce grid dependence. Add the ET112 to your system today and unlock the full potential of your Victron Energy setup.


SKU: VIC-REL300100000

SPECIFICATIONS

Specifications

Victron Part NumberREL300100000
Supplier ModelET112DINAV01XS1X
TypeET112
System1-phase 2-wire
Nominal Voltage230 VLN AC (AV0 option)
Current Range5(100) A
Measurement TypeDirect connection
Accuracy±0.5% RDG (current/voltage); Active energy Class 1 according to EN62053-21; Reactive energy Class 2 according to EN62053-23
Energy MeasurementkWh and kvarh (imported/exported); kWh+ by 2 tariffs
System VariableskW, kvar, V, A, PF, Hz, kWdmd, kWdmd peak
Communication PortRS485 Modbus port
ProtocolModBus RTU (slave function)
Optical PortFrontal bi-directional infrared optical coupling
Digital Input1, tariff management (switch between t1-t2)
Power SupplySelf power supply, 230 VAC VL-N, -30% +20%, 50/60 Hz
Power Consumption≤ 1.0 W, ≤ 8 VA
MountingDIN-rail
Dimensions (W x H x D)35 x 63 x 90 mm
Protection DegreeFront IP20
Operating Temperature-25 to +65 °C, indoor
Storage Temperature-30 °C to +80 °C
Overvoltage CategoryCat. III
WeightApprox. 160 g (packing included)
ApprovalsCE

SKU: VIC-REL300100000
Barcode: 8719076039686
Model #: REL300100000
MPN: REL300100000

WARRANTY

Victron Energy Limited Warranty Policy

Victron Energy warrants its products to be free from defects in workmanship and materials for a period of 5 years from the date of purchase by the end user, with a maximum of 66 months from the Victron Energy invoice date. Exceptions on this are: lead acid batteries; 2 years from date of purchase by the end user, with a maximum of 30 months from the Victron Energy invoice date, Lithium-ion batteries; 3 years from date of purchase by the end user. In addition to this proof of correct battery usage is required when making a battery warranty claim.

During this period, Victron Energy will, at its option, repair or replace the defective product free of charge. The warranty does not include performing or reimbursing de‐installation, transportation and re‐installation. This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use like: • Reverse of battery polarity. • Inadequate connection. • Mechanical shock or deformation. • Contact with liquid or oxidation by condensation. • Use in inappropriate environment (dust, corrosive vapor, humidity, high temperature, biological infestation...). • Breakage or damage due to lightning. • Connection terminals and screws destroyed or other damages, like overheat, due to insufficient tightening. • For any electronical breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state ofthe internal control diode and of the inputs/output X and Y capacitors determine the warranty.

This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone else than Victron Energy or one of its authorized Qualified Service Partners. In order to qualify for the warranty, the product must not be disassembled or modified.

Repair or replacement are our sole remedies and Victron Energy shall not be liable for damages, whether direct, incidental,special, or consequential, even caused by negligence or fault.

Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers in performing warranty repairs and building replacement products. If Victron Energy repairs or replaces a part of a product, its warranty term is not extended. In case of replacement the new component has a warranty of 6 months, without effect on the initial warranty period. All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent orspecial damages, even if having been advised of the probability of such damages. Any and all other warranties expressed or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited in duration to a period of two (2) years from the date of purchase.

Life Support Policy As a general policy, Victron Energy, does not recommend the use of any of its products in life support applications where failure or malfunction of the Victron Energy's product can be reasonably expected to cause failure of the life support device or to significantly affect its safety or effectiveness. Victron Energy does not recommend the use of any of its products in direct patient care. Victron Energy will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Victron Energy that the risks of injury or damage have been minimized, the customer assumes all such risks, and the Liability of Victron Energy is adequately protected under the circumstances.

As a product requires service, it must be brought back to the place of purchase. In case no contact can be taken with the merchant, or if he is either unable or not allowed to provide service, direct contact should be taken with Victron Energy.

Warranty on Repairs The warranty period on products or on printed circuits boards repaired by Victron Energy as well as on printed circuit boards for replacement is 6 months from delivery by Victron Energy.

Transport It is the responsibility of the sender to sufficiently package these products. The transport must be organized in a way to avoid any damage, especially when a single unit or heavy unit is sent.

Severability If a part of the terms and conditions set out above is held invalid, void or unenforceable due to any particular national or international legislation, it shall not affect other parts of the terms and conditions remaining.

For Australia only Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

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