Brand: Selec

Selec EM4M-3P-C-100A Direct 100 A DIN-Rail Energy Meter

Name: Selec EM4M-3P-C-100A 100 A DIN-Rail Meter | Seven Star LLC
Brand: Selec
SKU: EM4M-3P-C-100A

Description

A direct-connected 100 A energy meter that needs no current transformers

The Selec EM4M-3P-C-100A is a DIN-rail, self-powered three-phase energy meter that connects directly to the circuit up to 100 A (reference current Ib 10 A, range 0.5 A to 100 A). There is no CT to size, wire or short-circuit, which saves panel space and commissioning time on sub-circuits.

Three LCD rows (one of four digits and two of seven digits) show voltage, current, frequency, power factor, active, reactive and apparent power and energy, with import and export registers and maximum demand. Two pulse outputs and RS485 Modbus RTU pass the data on, and energy is retained for ten years without power.

Datasheet features

Self powered from the measured voltage; bi-directional (import and export) measurement
Two pulse outputs and Modbus RTU communication
Maximum demand power; 3-phase true RMS voltage and current

Technical specification

Measurement

Parameter	Specification
Connections	1P 2W (P1, P2, P3), 3P 3W, 3P 4W
Input voltage range	85 to 285 V AC L-N, 150 to 494 V AC L-L (self powered)
Input current	Ib 10 A; minimum 0.5 A, maximum 100 A
Frequency / consumption	45 to 65 Hz; 1.6 VA
Accuracy	Voltage 0.5% of F.S.; current 0.5% of nominal; PF 0.01; frequency 0.2%; power class 1; active energy class 1; reactive energy class 2
Display	3-row backlit LCD (1 x 4 digits, 2 x 7 digits); energy resolution 0.01k; PF resolution 0.01; auto or manual scrolling
Memory retention	10 years (energy)

Outputs and mechanical

Parameter	Specification
Pulse outputs	2 outputs, 5 to 24 V DC at 100 mA; duration 0.05 to 2.0 s settable; first fixed 1000 pulses/kWh; second 1/10/100/1000 for kVArh
RS485	Modbus RTU, half duplex, 500 m, address 1 to 255, 2400 to 38400 bps, parity none/odd/even, 1 or 2 stop bits, 100 ms response
Mounting	DIN rail; 400 g; width about 70 mm; terminal cable 35 mm2 (2 AWG, 75 degC min)
Environment	-10 to +55 degC operating; -20 to +75 degC storage; up to 85% RH; pollution degree II; installation category III

EMC immunity as printed

Parameter	Specification
ESD	IEC 61000-4-2 level IV (15 kV air)
Surge	IEC 61000-4-5, 4 kV common mode (line to ground)
Fast transient	IEC 61000-4-4 level IV (4 kV)
Radiated and conducted	IEC 61000-4-3 level III (10 V/m); IEC 61000-4-6 level II; product standard IEC 61326-1; CISPR 11 emissions

Order code on the datasheet

One product code is printed: EM4M-3P-C-100A, with 85 to 285 V AC L-N (150 to 494 V AC L-L) self-powered supply, two pulse outputs and RS485. Selec also publishes a MID-marked code (EM4M-3P-C-100A-MID) in the same instruction manual; that is a different order code and is not the one on this page.

Direct connection and DIN-rail fitting

Because the meter is direct connected, the load conductors pass through its terminals, so cable size and tightening torque matter: the datasheet shows 35 mm2 (2 AWG, 75 degC minimum) and 0.68 to 0.79 N-m, and the manual says connector screws must be tightened after installation.

Choose the wiring mode (1P2W, 3P3W, 3P4W) in configuration before energising loads.
Use lugged terminals and keep the layout away from EMI sources.
Fit the meter inside a panel; the manual limits use to indoor sites without steam or caustic vapour.

Where a 100 A direct meter fits

The EM4M suits sub-metering of tenant units, villas, camp buildings, workshop distribution boards and HVAC feeders up to 100 A, where installing CTs would cost more than the meter. Import/export measurement helps on feeders that can back-feed, such as solar-supported boards, and the pulse outputs can drive a remote counter or tariff logic. Fit indoors in a ventilated panel within the -10 to +55 degC window.

Selection and installation notes

A panel energy meter is selected from the wiring system, the current range and the outputs needed. Check whether the meter is direct-connected or CT-operated, set the CT ratio before reading, connect the voltage inputs through suitable fuses, respect the phase order and the polarity of the CTs and set the communication parameters when it is read by a BMS or energy system. Compare the first readings with a reference meter.

Information needed for a quotation

Send the full model code, the quantity, the delivery location in Oman or the GCC, the intended use and any accessories needed, so that the complete package can be quoted together.

Documents and supply information

The manufacturer data sheet is attached to this page and should be read together with the project specification and the site risk assessment before a purchase is confirmed. Ratings, standards and dimensions are quoted as printed on that sheet. Lead time, stock position and certificates available with the shipment are confirmed in the quotation, and we supply to Oman and the wider GCC region for industrial, utility and building services projects.

Related items

No CT is needed up to 100 A. For feeders above that rating, use a CT-operated meter such as the Selec EM368 on this site. Plan an RS485 terminator and gateway for Modbus, and an external fuse or breaker upstream as your design requires.

Frequently asked questions

What is the maximum current for direct connection?

100 A, with reference current Ib 10 A and a minimum of 0.5 A.

Does it need a separate supply?

No. It is self powered from 85 to 285 V AC L-N (150 to 494 V AC L-L).

How many pulse outputs does it have?

Two: the first is fixed at 1000 pulses per kWh and the second is configurable.

Which accuracy classes are printed?

Class 1 for power and active energy, Class 2 for reactive energy.

Is MID approval claimed for this code?

No. A MID code exists separately in the manual; this page covers EM4M-3P-C-100A.

Documents and quotation

The hosted file is the Selec EM4M-3P-C-100A datasheet. Please state wiring type and communication needs in your RFQ and confirm lead time and any certification you require before ordering. Seven Star LLC is an independent supplier in Muscat. More products in this range are listed under Metering Systems.

Datasheets & Documents

Datasheet Selec EM4M-3P-C-100A energy 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.