Brand: Selec

Selec MFM376-C-CE 3-Phase LED Multifunction Meter 40-300 V

Name: Selec MFM376-C-CE LED Multifunction Meter | Seven Star LLC
Brand: Selec
SKU: MFM376-C-CE

Description

A wide-supply LED multifunction meter that survives DC or AC auxiliary power

The Selec MFM376-C-CE is a 96 x 96 mm panel meter with a three-row, 0.49 inch seven-segment LED display and two eight-digit energy rows. Its auxiliary supply accepts 40 to 300 V AC or DC, which suits panels fed from a DC battery bus or an unstable AC auxiliary line as well as normal mains.

It measures 3-phase true RMS voltage and current at 100 samples per cycle, power, import and export energy, maximum and minimum demand, run hour and phase angle, and reports voltage and current THD and individual harmonics up to the 31st order. A single pulse output and RS485 Modbus RTU connect it to a PLC or energy system.

Features printed on the datasheet

Auxiliary supply 40 to 300 V AC/DC, with 100 ms typical ride-through
Import/export energy, run hour, max/min demand power, phase angle detection
Password protection for set-up, energy clearing and min/max data

Technical specification

Measurement and display

Parameter	Specification
Display	LED, 3 rows of 4 digits plus 2 rows of 8 digits for energy; digit height 0.49 in
Sampling and refresh	True RMS sampled 100 times per cycle; screen refresh 1 s for instantaneous values, 15 s for demand and 5 s for harmonics
Network types	Delta or wye three-phase, two-phase three-wire, single-phase two-wire (L-N)
Accuracy figures	Voltage and current within 0.5% of full scale, power within 1%, power factor 0.01, frequency 0.1% (once L-N exceeds 20 V or L-L exceeds 35 V)
Energy class	Active and reactive Class 1 per IEC 62053-21 as printed
Harmonics	THD and individual harmonics, V and A, to 31st level

Inputs, supply and outputs

Parameter	Specification
Voltage measuring window	Phase-neutral 11-300 V AC and phase-phase 19-519 V AC around 240/415 V nominal; can sustain 750 V AC L-L permanently; input impedance of at least 0.8 Mohm
PT scaling	Programmable PT primaries between 100 V and 500 kV, secondaries of 100-500 V
Current measuring window	5 A nominal, readable from 20 mA to 6 A; survives 120 A for one second; 0.5 VA drawn per phase
CT scaling	Any primary from 1 or 5 A to 10 kA; 1 A or 5 A secondary
Auxiliary supply	40 to 300 V AC/DC, 50/60 Hz; burden below 6 VA at 277 V L-N
Pulse output	Opto-style open output, up to 24 V DC and 100 mA; fixed 100 ms width; pulse weight set between 1 and 9,999,000 pulses per kWh
Serial link	RS485 carrying Modbus RTU over as much as 500 m; slave IDs 1-255; speeds from 300 baud to 19200 baud; reply within 100 ms; 2 kV RMS isolated

Mechanical, environment and standards

Parameter	Specification
Case	Makrolon 6557 in smoke black, front IP51, 200 g; cutout 90.5 x 90.5 mm per drawing; terminal screws take 0.68-0.79 N-m
Ambient limits	Runs from -10 degC to +55 degC and stores from -20 degC to +75 degC; humidity to 85% without condensation; altitude to 2000 m; pollution degree 2; stated product life above five years
Safety categories	Protection class II; measurement CAT III up to 480 V L-L and 300 V L-N, CAT II up to 600 V L-L (IEC 61010 edition 3.0)
EMC	Product standard IEC 61326-1 with the IEC 61000-4 immunity series and CISPR-22/-11 emissions

One code on this datasheet

Only one orderable code, MFM376-C-CE, appears on the sheet; it already includes the universal AC/DC auxiliary input, the pulse output and the RS485 port. It differs from the MFM384 in its LED display, lower IP rating (IP51 versus IP54), lower weight and broader supply range, and it lacks the MFM384 bar graph and CT polarity detection.

Mounting with sliding clamps and configuring from three keys

The manual mounts the meter by pushing it through the cutout and sliding four clamps evenly toward the panel; demounting is done by pulling each clamp arm outward and dragging the clamp away. Three dedicated keys open the configuration menu (hold the two outer keys for 3 s).

Land the conductors on lugs (copper, 0.5 to 2.5 mm2) and route signal cables clear of noisy equipment.
Because no fuse is fitted internally, add the 275 V AC, 0.5 A external fuse the manual suggests.
On a 3-phase 3-wire system only the first screen and the average power-factor screen are available.

Where a DC-capable LED meter helps

The 40 to 300 V DC capability makes the MFM376-C-CE a candidate for substations and generator panels where a 110 V DC bus is available alongside AC. The large LED digits stay readable in a dim plant room, and the 15 second demand and import/export registers help when metering a generator set that can also feed back to a utility. As with other Selec panel meters, install indoors with IP51 front protection only.

External parts you still need

Current transformers, any medium-voltage PTs and an RS485 gateway are bought separately. The pulse output can drive a PLC counter or a remote kWh totaliser; the manual shows the wiring and states that a self-excited PLC input needs no external supply. Compare with the MFM384 if you need a backlit LCD, IP54 front, or a bar graph.

Frequently asked questions

What supply does the MFM376-C-CE need?

40 to 300 V AC or DC, 50/60 Hz, with burden below 6 VA at 277 V L-N and about 100 ms ride-through.

How far do the harmonic readings go?

Both THD and single harmonics are available for voltage and current through order 31.

Does it separate imported and exported energy?

Yes. Import and export registers are listed, alongside run hour and demand values.

How well is the front sealed?

The datasheet gives IP51 for the front only.

What accuracy is quoted?

Half a percent of full scale on voltage and current, 1% on power, and Class 1 on energy.

Documents and quotation

Attached is the two-page MFM376-C-CE datasheet from the manufacturer. An enquiry that names the CT ratio, PT ratio and auxiliary source can be answered fastest; stock, approvals and delivery should be confirmed with us before you place an order. Seven Star LLC trades as an independent supplier from Muscat. More products in this range are listed under Metering Systems.

Datasheets & Documents

Datasheet Selec MFM376-C-CE multifunction meter datasheet Download

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About brand

Selec Controls is an Indian manufacturer of electrical measurement and control products, founded in 2000 and based in Navi Mumbai. Its range covers multifunction meters, energy meters, power factor controllers, panel meters, timers, temperature controllers and DIN rail power supplies.

Seven Star LLC is an independent supplier in Muscat. We list Selec meters, controllers and power supplies for panel builders and electrical contractors in Oman and the GCC.

Selec product series

Multifunction meters include the MFM384 three-phase meter in 96 x 96 mm with RS-485, the MFM376-C-CE LED multifunction meter for 40-300 V input and the MRJ4M-SL split-load DIN rail meter with RJ45 CT inputs. Energy meters include the EM368-C-CU CT-operated meter, the EM4M-3P-C-100A direct-connected 100 A DIN rail meter and the EM306-C-D dual-source meter that records mains and generator energy separately.

The APFC146-112-90/550V-CE is a 12-stage automatic power factor controller, the MV507 is a 48 x 48 mm digital voltmeter, and the RPS60-24 and RPS240-24 are 24 V DIN rail power supplies for 2.5 A and 10 A.

Where Selec products are used

Low voltage distribution boards, generator and changeover panels, capacitor banks, sub-metering of tenants and loads, and 24 V control supplies in automation panels.

Ordering Selec products: what we need

Send the full Selec model code, which sets the size, input range, auxiliary supply and communication, or give the system voltage, CT ratio, number of capacitor steps and output current needed.

Browse Selec products by category: Power Meters & Power Quality.