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Brand: Lumel
Lumel N43 11100M0 DIN-Rail 3-Phase Power Network Meter
Description
The Lumel N43 11100M0 is a six-module meter for 35 mm rail that measures three-phase, 3- or 4-wire networks and reports through RS-485 Modbus, USB and three programmable relays. This code is the 1 A / 5 A current-transformer version for 3 x 57.7/100 V voltage inputs, powered from 85 to 253 V a.c. or 90 to 300 V d.c. Its rail housing suits modular distribution boards where there is no room, or no need, for a door-mounted instrument.
Rail-mounted metering for modular boards
The N43 follows EN 62208 modular practice and is six modules wide, so it sits beside breakers and contactors in a sub-distribution board or a feeder pillar. It measures r.m.s. voltage and current, active, reactive and apparent power, active and reactive energy, power factor, frequency and THD, and it also calculates the 15-, 30- or 60-minute demand values P Demand, S Demand and I Demand. P Demand works as a power guard: with a relay set as an alarm, a plant can shed load before a contracted maximum demand is exceeded.
Values are shown on a backlit monochrome LCD with programmable display pages. All indications account for the programmed voltage and current ratios (voltage ratio 0.1 to 4000.0), so the screen reads primary quantities.
Key features from the data sheet
- Direct measurement up to 63 A, or indirect measurement through 1 A / 5 A current transformers.
- Three programmable alarm relays and one passive pulse output for active energy.
- RS-485 Modbus RTU plus a USB port for configuration with the free eCon software.
- Password protection and a real-time clock.
- Analog outputs can be added with the S4AO module.
Technical specification
Measured quantities and ranges
| Quantity | Range and basic error |
|---|---|
| Current, 1 A / 5 A input | 0.002 to 1.20 A (1 A) or 0.010 to 6.00 A (5 A), shown with the set ratio; error 0.5% |
| Current, 63 A input | 0.10 to 76.0 A a.c.; error 0.5% |
| Voltage L-N | 57.7 V: 2.80 to 70.0 V; 230 V: 10.0 to 276 V; 290 V: 14.0 to 348 V; error 0.5% |
| Voltage L-L | 100 V: 5.00 to 120 V; 400 V: 20.0 to 480 V; 500 V: 25.0 to 600 V; error 1% |
| Frequency | 47.0 to 63.0 Hz; error 0.5% |
| Active, reactive and apparent power | 0.00 to 999 W/kW/MW, var/kvar/Mvar, VA/kVA/MVA; error 1% |
| Active and reactive energy | 0.0 to 999 999.9 kWh / kvarh (MWh / Mvarh); error 1% |
| Power factor PF | -1 to 0 to 1; error 1% |
Outputs, interface and construction
| Parameter | Specification |
|---|---|
| Relay outputs | 3 programmable, normally open voltage-free contacts, 250 V a.c. / 0.5 A a.c. |
| Pulse output | 1 passive OC output for active energy |
| RS-485 interface | MODBUS RTU; modes 8N2, 8E1, 8O1, 8N1; 4.8 / 9.6 / 19.2 / 38.4 kbit/s |
| USB interface | USB 1.1 / 2.0, MODBUS RTU, 8N2, 9.6 kbit/s (configuration) |
| Display | Monochrome backlit LCD |
| Dimensions | 105 x 110 x 60 mm, 35 mm rail, width of 6 modules |
| Weight | Under 0.3 kg |
| Protection (EN 60529) | IP50 at the housing, IP00 at the terminals |
| Supply | 85 to 253 V a.c. or 90 to 300 V d.c. (code 11100); a 20 to 40 V a.c. / 20 to 60 V d.c. supply is also listed in the data sheet |
| Power consumption | 4 VA in the supply circuit; 2 VA in the voltage and current circuits |
| Ambient range | -10 to 55 degrees C, reference 23 degrees C |
| Relative humidity | Up to 95% without condensation, mounting position free |
| Overload | Voltage inputs 2 Un for 5 s; current inputs 50 A for 1 s (1 A / 5 A version), 630 A for 1 s (63 A version) |
| Standards named | EN 61000-6-2 (immunity), EN 61000-6-4 (emission), EN 61010-1 (safety) |
Selection and ordering guide
Three ordering codes are printed in the data sheet. N43 11100M0 is 1 A / 5 A with 3 x 57.7/100 V inputs, three relays, a pulse output, RS-485 and an 85 to 253 V a.c. or 90 to 300 V d.c. supply, carrying documents in two languages and a test certificate. N43 12100M0 is the same 1 A / 5 A meter in an English-only version. N43 22100M0 is the 63 A direct-connection meter with 3 x 230/400 V inputs. Changing the final digit of any code to 2 (for example N43 12100M2) adds a paid calibration certificate. Select the 63 A version only when the load is within 63 A and the board has no current transformers.
Installation notes from the manual
The housing is plastic and clips on a 35 mm rail. Terminal strips accept conductors to 5.3 mm2 (indirect) or 16 mm2 (direct). The manual asks installers to leave at least 5 mm between the N43 and any heat-emitting device, including another N43, because otherwise the temperature at the meter can exceed the rated ambient. A switch or circuit breaker near the meter is required in the building installation. Out of the box the serial link answers at address 1, 9.6 kbit/s, RTU 8N2; the manual tabulates the Modbus registers for each measurement.
Applications in GCC plants and buildings
Typical places are tenant sub-metering in commercial towers, motor feeders at pumping stations, generator and chiller panels and process skids, where a 55 degrees C rated-ambient meter reports to a building management or SCADA system over Modbus.
Related Lumel items
The S4AO module adds analog outputs to the N43, according to the data sheet.
Frequently asked questions
What does the N43 11100M0 code mean?
It is the 1 A / 5 A current input, 3 x 57.7/100 V voltage input version with three relays, a pulse output, RS-485 and an 85 to 253 V a.c. or 90 to 300 V d.c. supply.
Can the N43 measure directly without current transformers?
Yes, the 63 A version (for example N43 22100M0) measures directly up to 63 A.
How is the N43 configured?
From the front keys, or over USB or RS-485 with the free eCon software.
How much space must be kept between rail devices?
The manual asks for at least 5 mm so that heat can leave the housing.
Does it calculate demand values?
Yes, P Demand, S Demand and I Demand over 15, 30 or 60 minutes.
Documents and quotation
Lumel N43 11100M0 enquiries are handled by Seven Star LLC, an independent supplier in Muscat that sources genuine Lumel products. The Lumel N43 user manual is attached. Data sheet N43-19A supplies the ordering codes and ratings used here. No price is displayed here; send the code and quantity for a written reply, and verify the data against the current documents. See also Electrical & Power.
Datasheets & Documents
- Manual N43 rail mounted power network meter user manual (Lumel) Download
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About brand
Lumel is a Polish manufacturer of industrial measuring and automation devices based in Zielona Góra, known under this name since 1953. Its catalogue covers power network meters and analyzers, digital panel meters, controllers, recorders, transducers, current transformers and shunts.
Seven Star LLC is an independent supplier in Muscat. We list Lumel instruments, each with the manufacturer document, for switchboard builders and plant engineers in Oman and the GCC.
Lumel product series
Power measurement includes the N14 and ND20 three-phase power network meters with RS-485, the N43 DIN rail meter, the N100 network analyzer with Ethernet and the N32H digital DC circuit meter. The NF20 is a power factor controller for 4 to 12 capacitor steps.
Process instruments include the N31U universal digital panel meter, the RE82 PID temperature controller in 48 x 96 mm format, the RP3 three-phase thyristor power controller from 40 to 450 A and the HT20 Ethernet temperature and humidity monitor with PoE.
Where Lumel instruments are used
Switchboards and distribution panels, generator and capacitor bank panels, battery and rectifier circuits, industrial heating, plastics and food processing lines, and monitored storage and server rooms, wherever readings must reach a PLC, SCADA or building system.
Ordering Lumel instruments: what we need
Send the full ordering code, which defines inputs, supply voltage and communication, or give the measured quantities, CT and VT ratios, supply voltage, output and interface required.
Browse Lumel products by category: Power Meters & Power Quality.
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Frequently Asked Questions
What does the N43 11100M0 code mean?
It is the 1 A / 5 A current input, 3 x 57.7/100 V voltage input version with three relays, a pulse output, RS-485 and an 85 to 253 V a.c. or 90 to 300 V d.c. supply.
Can the N43 measure directly without current transformers?
Yes, the 63 A version (for example N43 22100M0) measures directly up to 63 A.
How is the N43 configured?
From the front keys, or over USB or RS-485 with the free eCon software.
How much space must be kept between rail devices?
The manual asks for at least 5 mm so that heat can leave the housing.
Does it calculate demand values?
Yes, P Demand, S Demand and I Demand over 15, 30 or 60 minutes.
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