Tech OVN

Multifunction Meter (MFM) & Digital Panel Meter — Class 0.5S, RS485 + Modbus TCP + MQTT, Made in India

A 3-phase multifunction energy meter (MFM) — also specified as a digital panel meter or panel-mount meter — for LT panels, switchgear, sub-metering, and industrial captive plants. Class 0.5S accuracy, RS485 Modbus + Modbus TCP + MQTT + WiFi out of the box, DIN rail or 96 × 96 mm panel mount — cloud-native connectivity most panel meters can't match.

Class 0.5S (IEC 62053-22)AccuracyRS485 Modbus · TCP · MQTT · WiFiCommsDIN rail / 96 × 96 mm panelForm factorIEC 62053-22 · Class 0.5SCompliance
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Tech OVN Titan multifunction meter (MFM) — Class 0.5S 3-phase energy meter with RS485 and WiFi
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At a glance

What it is
A 3-phase multifunction meter (MFM) — also called a digital panel meter, trivector meter, or network analyser — measuring V, I, kW, kVA, kVAr, PF, kWh / kVAh / kVArh, demand, and harmonics on every phase.
Best for
LT panel builders, switchgear OEMs, industrial sub-metering, captive power plants, ESCOs, MEP consultants, and tenant-billing buildings.
Standards
IEC 62053-22 Class 0.5S energy accuracy. Standards-compliant specification boilerplate and Modbus register map provided for tender BOQs on request.
Programmes
Catalogue MFMs ship with no MOQ. White-label / OEM with custom Modbus map and branding — 200-unit MOQ, 4 weeks from PO.

A Cloud-Native MFM for LT Panels and Industrial Sub-Metering

The India panel-meter category — which includes brands like Selec, Elmeasure, Schneider, and L&T — covers the full spectrum of 3-phase MFMs used on LT panels, switchgear, and industrial sub-distribution. Titan is built for the same buyer set: electrical contractors, plant engineers, switchgear OEMs, ESCOs, and MEP consultants.

What Titan adds to the category is a cloud-native data path integrated with the meter itself. Built-in WiFi and Ethernet stream data directly to our cloud Energy Management System or any third-party MQTT broker. RS485 Modbus RTU and Modbus TCP stay live in parallel for switchgear PLC and SCADA integration. One DIN rail unit, three concurrent comms paths (RS485 Modbus, Modbus TCP, MQTT), and Class 0.5S accuracy that holds across the deployment lifetime.

Used by LT panel builders, captive power plant operators, industrial submetering projects, ESCOs running M&V, and MEP consultants writing tender specs. Buy the same hardware as a standalone meter, a switchgear-integrated panel meter, or a cloud-monitored asset — same device, three deployment modes.

What the Titan MFM Does

Six capabilities that separate a cloud-native Class 0.5S MFM from a legacy Class 1.0 panel meter.

Full Parameter Set on Every Phase

V, I, kW, kVA, kVAr, PF, frequency, kWh, kVAh, kVArh, demand (kW/kVA MD), THD and individual harmonics — per phase. The full parameter set buyers expect from a 3-phase multifunction meter, in one DIN rail unit.

Class 0.5S Revenue-Grade Accuracy

IEC 62053-22 Class 0.5S — the same accuracy class utilities use for revenue billing. Readings hold inside band across the full operating range and across the deployment lifetime, so sub-billing, M&V, and EnPI numbers stay defensible.

RS485 Modbus + Ethernet + WiFi + MQTT

Titan ships RS485 Modbus RTU, Modbus TCP over Ethernet, MQTT, and WiFi simultaneously — so the same hardware can feed a switchgear PLC, an in-house SCADA, an MQTT broker, and a cloud dashboard at the same time without any additional gateway.

DIN Rail or Panel Mount

DIN rail form factor for industrial cabinets and switchgear retrofit. Panel-mount adapter for LT/HT panels using the standard 96 × 96 mm cutout. Same electronics, same accuracy, two install patterns.

Built-In Cloud Connectivity — No Gateway

Titan connects to our cloud Energy Management System directly over WiFi or Ethernet — no separate energy-server PC and no Modbus gateway in the data path between the meter and the dashboard.

Made in India, Class 0.5S Accuracy

Designed and manufactured in India to IEC 62053-22 Class 0.5S — the accuracy class specified in most LT-panel and industrial MFM tenders. Standards-compliant specification boilerplate and the Modbus register map are provided to specifiers and panel builders on request.

MFM Specifications

ParameterSpecification
Type3-phase 4-wire / 3-phase 3-wire multifunction energy meter (MFM)
Accuracy classClass 0.5S energy (IEC 62053-22), Class 0.5 voltage / current
Voltage range3 × 57.7/100 V to 3 × 277/480 V (PT or direct)
Current inputVia CT, 1 A or 5 A secondary; CT primary 10 A – 1000 A; direct-connected variants on request
Parameters measuredV (L-L, L-N), I, kW, kVA, kVAr, PF, frequency, kWh, kVAh, kVArh (import/export), demand (kW, kVA, A — block + sliding), THD-V, THD-I, individual harmonics up to 31st
Demand windowConfigurable sliding / fixed-block, 1 / 5 / 15 / 30 / 60 min
CommunicationRS485 Modbus RTU, Modbus TCP (Ethernet), MQTT (WiFi / Ethernet)
DisplayBacklit LCD, configurable scroll, instantaneous + accumulated + demand pages
StandardsIEC 62053-22 (Class 0.5S active), IEC 62053-23 (reactive), IEC 61000-4-30 Class S (Titan PQ variant), EMC per IEC 61000-4 series
MountingDIN rail (standard) or 96 × 96 mm panel-mount adapter
Operating conditions−25 °C to +70 °C, 5–95% RH non-condensing, EMC tested IEC 61000-4 series

Connectivity — Beyond RS485-Only Panel Meters

Most panel meters stop at RS485 Modbus and rely on a separate gateway to reach a network. Titan keeps the RS485 Modbus RTU that panel builders expect, then adds Modbus TCP over Ethernet, MQTT to any broker, and built-in WiFi — all running at the same time, with no gateway, converter, or energy-server PC in the data path. Serve a local switchgear PLC or SCADA over Modbus while the same meter streams live to the cloud.

Modbus RTU over RS485

The protocol every panel builder expects — Modbus RTU on a standard 2-wire RS485 bus, Master or Slave, with the full register map exposed for switchgear PLCs, SCADA, and legacy BMS. The same integration a Selec, Elmeasure, or Schneider EM panel meter gives you.

Modbus TCP over Ethernet

Where most legacy panel meters stop at RS485, Titan adds a built-in Ethernet port running Modbus TCP — poll the meter directly over your LAN at full speed from any Modbus TCP master, with no RS485-to-Ethernet converter or serial gateway in the panel.

MQTT + WiFi to the Cloud

Titan publishes over MQTT to any broker (AWS IoT, Azure IoT Hub, HiveMQ, Mosquitto, or the Tech OVN cloud) over built-in WiFi or Ethernet. A genuinely cloud-native panel meter — not an RS485 meter bolted to a third-party gateway.

Communication & Connectivity

ParameterSpecification
RS4852-wire bus, Master or Slave — Modbus RTU, full register map
EthernetBuilt-in 10/100 port — Modbus TCP, no serial gateway required
WiFiBuilt-in 2.4 GHz (802.11 b/g/n)
ModbusModbus RTU (over RS485) + Modbus TCP (over Ethernet)
MQTTPublish to any broker (AWS IoT, Azure IoT Hub, HiveMQ, Mosquitto, Tech OVN cloud), TLS-secured
SimultaneousModbus and MQTT run at the same time — serve a local panel/SCADA while streaming to the cloud
CloudDirect to the Tech OVN Energy Management System over WiFi / Ethernet — no separate energy-server PC
UpdatesOTA firmware over WiFi — no site visits, no USB

MFM vs Power Quality Meter vs Energy Meter vs Smart Meter

Indian electrical procurement uses several overlapping names for adjacent products. Here is the side-by-side view so the right device ends up in the right tender BOQ.

DimensionMFM (Titan)Power Quality MeterBasic Energy MeterSmart / Utility Meter
What it measuresV, I, kW, kVA, kVAr, PF, kWh, kVAh, kVArh, demand, harmonics — per phaseSame as MFM plus full PQ events (sags / swells / transients / flicker)Active energy (kWh) only, sometimes kVA + PFMFM parameters + utility-tariff features (TOU, anti-tamper, prepaid)
Accuracy classClass 0.5S (IEC 62053-22)Class S PQ (IEC 61000-4-30) + 0.5S energyClass 1.0 or 2.0 typicalClass 1.0 (residential) or 0.5S (industrial)
Where it's installedLT panel, sub-distribution, captive plant, industrial submeteringCritical feeders, OT/ICU, data centre IT load, manufacturing PQ-sensitive equipmentSingle-load monitoring, basic kWh trackingUtility service entrance for billing
Typical userElectrical contractor, plant engineer, switchgear OEM, ESCO, MEP consultantPower quality auditor, MV/HV engineer, industrial reliability teamBuilding owner, light commercial submeterDISCOM, utility company, AMI rollout
Indian terminologyMFM, multifunction meter, trivector meter, panel meter, network analyserPQ meter, power quality analyser, Class A / Class S analyserkWh meter, energy meter, basic meterSmart meter, AMI meter, utility meter

The right TechOVN product for each: Titan (MFM), Titan PQ (PQ analyser, IEC 61000-4-30 Class S), Titan basic variants (basic energy meter), and our utility smart meter range (DISCOM-side).

Where the MFM Is Used

Six common procurement contexts for a Class 0.5S 3-phase multifunction meter in India.

LT Panel Builders & Switchgear OEMs

Panel-mount or DIN rail MFM as a standard fitment on LT distribution boards, MCCs, PCCs, and LT panels. Standard 96 × 96 mm or DIN rail formats with RS485 Modbus for switchgear PLC integration.

Industrial Submetering

Production lines, compressed-air systems, chiller plants, large motors. Class 0.5S accuracy on every circuit, dashboard view across the plant, alerts on demand or PF deviation.

Captive Power Plants & DG Sets

Track DG output independently from grid import, calculate cost per kWh, detect synchronisation issues, and feed data into ABT-style internal billing models for multi-tenant captive plants.

MEP Consultants & Electrical Contractors

Specify Class 0.5S MFM with RS485 + MQTT + WiFi for tender BOQs — IEC 62053-22 compliant. Standards-compliant boilerplate available on request for inclusion in tender documents.

Sub-Metering for Tenant Billing

Per-floor, per-tenant, per-unit submetering with chargeback-grade accuracy. Class 0.5S meets the standard required for revenue-grade tenant bills that hold up under dispute.

Solar PPA & Net-Metering Audits

Independent measurement on the solar generation side and the grid-import side for behind-the-meter solar verification, with bidirectional kWh + kVArh and time-of-use tariff support.

The Titan Family — One Platform, Multiple Meter Types

The Titan MFM is one variant in a family of Class 0.5S meters from the same in-house design and production line. Pick the variant that matches the circuit, the application, or the tender specification — they all feed the same cloud platform.

Titan — 3-Phase Smart Energy Meter / MFM (Class 0.5S) →Titan PQ — Power Quality Meter (IEC 61000-4-30 Class S) →Titan Audit — Portable Energy Logger for ESCOs →Titan BTU — Chilled-Water / Thermal Energy Meter →Energy Management System (EMS) — Cloud Dashboard →White-Label / OEM / ODM Energy Meter Programme →

Frequently Asked Questions

What an MFM is, how it differs from a trivector meter / network analyser / smart meter, Class 0.5S vs Class 1.0, RS485 + MQTT + WiFi comms, and tender compliance.

A multifunction meter (MFM) is a panel-mount or DIN-rail energy meter that measures multiple electrical parameters simultaneously — voltage, current, power (active / reactive / apparent), power factor, frequency, energy (kWh / kVAh / kVArh), demand (maximum demand, sliding-window demand), and harmonics — across all three phases. MFMs replace the older arrangement of separate ammeters, voltmeters, kWh meters, and power-factor meters on an LT panel with a single integrated unit communicating over RS485 Modbus to a SCADA, BMS, or cloud dashboard.
Yes. The Titan is a 3-phase multifunction meter (MFM) — measuring V, I, kW, kVA, kVAr, PF, kWh, kVAh, kVArh, demand, and harmonics on every phase. It sits in the same India panel-meter category that includes brands like Selec, Elmeasure, Schneider, and L&T. The Titan-specific spec — Class 0.5S accuracy, simultaneous RS485 Modbus + Modbus TCP + MQTT + WiFi, DIN rail or 96 × 96 mm panel mount — is on the Titan product page.
In Indian electrical procurement, 'trivector meter' usually refers to a 3-phase MFM measuring kWh + kVAh + kVArh (the three energy types — hence 'tri-vector'). 'Network analyser' is a marketing-led term used by some brands for the same product category, usually emphasising harmonics and PQ measurement. 'Multifunction meter' / 'MFM' is the general procurement term for the whole category. All three describe largely the same hardware — Titan covers all three buyer terms.
Yes, especially for tenant billing, ISO 50001 M&V, or any application where the meter's reading drives a financial outcome. Class 1.0 meters typically drift 1–3% over 3–5 years, especially on partial loads (which is most of the time in a real building). Class 0.5S (IEC 62053-22) is the same accuracy class utilities use for revenue billing — the readings hold inside band across the operating range and across the deployment lifetime. The price delta is small; the data-integrity delta is large.
Yes. Titan supports Modbus RTU over RS485 (standard panel-meter integration), Modbus TCP over Ethernet, and MQTT over WiFi or Ethernet — all simultaneously. The same hardware can feed a switchgear PLC, a Schneider EcoStruxure or Honeywell BMS, an industrial SCADA, and a cloud dashboard at the same time. Register map provided to integrators on request.
Yes. A standard panel-mount adapter fits 96 × 96 mm cutouts — the standard LT panel meter cutout in India. The same electronics ship in DIN rail format for industrial cabinets where DIN rail mounting is preferred.
Yes — 'digital panel meter', 'panel-mount meter', and 'multifunction meter (MFM)' all describe this product. Titan replaces the older arrangement of separate analogue ammeters, voltmeters, and PF meters on a panel fascia with one digital panel meter that shows V, I, kW, kVA, kVAr, PF, kWh, demand, and harmonics on a backlit LCD, and mounts in a standard 96 × 96 mm cutout. What sets it apart from a basic digital panel meter is connectivity: alongside the RS485 Modbus port, it adds Modbus TCP over Ethernet, MQTT, and built-in WiFi — so it works as a local panel meter and a cloud-connected meter at the same time.
Titan is designed to IEC 62053-22 Class 0.5S — the accuracy class specified in most LT-panel and industrial MFM tenders — and we provide standards-compliant specification boilerplate and the Modbus register map for inclusion in tender BOQs. Note: BIS licensing and GeM registration currently apply to our utility smart-meter and static-meter range rather than the Titan MFM series, so if your tender specifically requires those, talk to us about the right product for that requirement.
Catalogue MFMs ship with no MOQ — single units or hundreds. Custom-branded / white-label variants have a 200-unit MOQ. Standard lead time is 4 weeks from PO for both. For volume buyers and OEM partners, we run a separate white-label / OEM programme covering custom enclosures and bespoke Modbus register maps.

Specifying an MFM for a panel, plant or tender BOQ?

Talk to our team. Class 0.5S Titan MFM with RS485 Modbus + Modbus TCP + MQTT + WiFi, DIN rail or 96 × 96 mm panel mount. Datasheet, Modbus register map, and standards-compliant tender boilerplate on request.

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