MEAN WELL NTN-5K-124CAN combines a 4000 W continuous true sine wave inverter, an AC battery charger and UPS bypass in one unit. It uses a 24 VDC nominal battery system and is factory set to 110 VAC / 60 Hz. This complete model has CANBus communication. Solar charging uses an external MPPT charger connected to the battery system.
Product Datasheet
Download MEAN WELL NTN-5K Datasheet (PDF)
The NTN-5K section is on PDF pages 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13. Refer to the complete mechanical drawings and notes when planning installation.
Model and Inverter Output
| Complete model |
NTN-5K-124CAN |
| Series |
NTN-5K |
| Continuous output power |
4000 W |
| Nominal DC input voltage |
24 VDC |
| Default AC output voltage |
110 VAC |
| Overpower rating, 3 minutes |
4600 W |
| Peak output, 10 seconds |
5600 W |
| Surge output, 30 AC cycles |
7000 W |
| Selectable AC output voltages |
100 / 110 / 115 / 120 VAC |
| Factory frequency |
60 ±0.1 Hz |
| Selectable frequencies |
50 / 60 Hz |
| Output waveform |
True sine wave; THD <3% |
| AC voltage regulation |
±3% |
| Typical inverter efficiency |
89% |
The 124 code selects the 110 VAC output group and 24 VDC battery-input version. The CAN suffix selects CANBus communication.
Efficiency, AC regulation and THD are specified at 75% linear load with 25 VDC input. Unless otherwise stated, measurements use 25 VDC input, 25°C ambient and factory settings. AC regulation is stated at rated input. Short-duration power is separate from the continuous rating; size the installation for the applicable input-voltage and temperature limits.
Battery Input and Low-Load Operation
| Typical DC input range |
19–33 VDC |
| Typical DC input current |
200 A |
| Typical no-load current, non-saving mode |
2.5 A |
| Typical saving-mode consumption |
<25 W |
| Off-mode input current |
≤2 mA |
Compatible battery types are flooded, Gel and AGM lead-acid, or Li-ion. Select charge settings and protective thresholds to suit the battery manufacturer’s requirements.
Saving mode is disabled at the factory. When enabled, the unit enters saving mode automatically at AC loads of 10 W or less. Saving mode is available only for an independently operating unit with its PRL switch ON; do not apply this mode to a parallel system.
AC Charging and UPS Bypass
| Default boost charge voltage |
28.8 V |
| Default float charge voltage |
27.6 V |
| Charging voltage adjustment |
20–30 V |
| Maximum constant charging current |
120 A |
| Maximum charging power |
3600 W |
| Typical charging efficiency |
89% |
| Typical charging power factor |
>0.98 at 115 VAC, full load |
| Typical AC charging input current |
20 A at 110 VAC |
| Typical AC charging inrush current |
25 A at 110 VAC |
| Peak AC leakage current |
4.7 mA at 264 VAC |
| AC utility frequency range |
45–65 Hz |
| Typical transfer time |
10 ms, inverter ↔ AC bypass |
AC utility acceptance is ±16% of the selected 100 / 110 / 115 / 120 VAC setting; recovery is within ±13%. The default UPS mode supplies the load directly from available AC utility power while charging the battery. The alternative energy-saving operating mode is described in the manufacturer’s operating-logic instructions.
Default three-stage charging starts at constant current, then holds the boost voltage while current decreases, and finally maintains the float voltage. The curve marks the CV-to-float transition at 10% of charging current. Charge-stage indication flashes orange in constant-current/constant-voltage operation and green in float. Adjust charging parameters through CANBus within the stated range.
The supplied battery-temperature sensor supports charging-voltage compensation in three-stage lead-acid charging over 0–40°C. Connect the sensor to the battery using the supplied mating lead and a suitable customer extension: NTC pin 1 is RTH− and pin 2 is RTH+. The charger continues normal operation if the sensor is not used.
Battery and Output Protection
| Low-battery alarm |
22 ±0.5 V |
| Low-battery shutdown |
19 ±0.5 V |
| Low-battery restart |
25 ±0.5 V |
| High-battery alarm |
31 ±0.5 V |
| High-battery shutdown |
33 ±0.5 V |
| High-battery restart |
30 ±0.5 V |
| AC circuit breaker |
50 A |
For reversed DC polarity, the protection is specified as causing no damage; remove the fault and re-power the unit.
Typical overload protection shuts down the output at 105–115% for 180 seconds or 115–150% for 10 seconds; re-power the unit after correcting the fault. Apply the model-specific peak-power ratings separately rather than treating these protection thresholds as continuous output ratings.
AC output short-circuit protection shuts down the output and requires re-powering. Overtemperature protection shuts down the output and recovers automatically after the temperature falls. Low-battery shutdown helps prevent excessive battery discharge.
Temperature, Input Derating and Environment
| Operating temperature |
−30 to +70°C, with derating |
| Operating humidity |
20–90% RH, non-condensing |
| Storage temperature and humidity |
−30 to +70°C; 10–95% RH, non-condensing |
The horizontal-mounting temperature curve permits 100% load from −30°C through 40°C, then 80% at 50°C, 50% at 60°C and 25% at 70°C. The temperature-controlled fan must have an unobstructed airflow path.
The DC-input curve permits 50% load at 19 VDC, 75% at 22 VDC and 100% from 23 through 33 VDC. Apply DC-input and ambient-temperature derating together.
Vibration test conditions are 10–500 Hz at 3 G, 10 minutes per cycle, for 60 minutes along each X, Y and Z axis.
DIP Settings and Remote Control
SW2 selects voltage, frequency and standby saving. S1/S2 OFF/OFF selects 100 VAC; OFF/ON selects 110 VAC; ON/OFF selects 115 VAC; ON/ON selects 120 VAC. S3 ON selects 50 Hz and OFF selects 60 Hz. S4 ON enables saving mode and OFF selects non-saving mode.
AC-output remote control uses the PAR1 or PAR2 dry-contact connection between pin 1 (+5V_AUX2) and pin 3 (REMOTE ON/OFF): short for AC output ON, open for AC output OFF.
The separate four-pin Power ON/OFF connector controls the whole unit: short pins 1–2 and pins 3–4 for power ON; leave pins 1–4 open for power OFF. Use the supplied switch/connector leads and the manufacturer connection drawing.
Parallel and Multi-Phase Systems
Built-in active current sharing supports up to six compatible units in parallel. Use short, large-diameter output wiring before the common load connection. For fewer than six units, maximum total output current is rated current per unit × number of units × 95%. Use the manufacturer’s six-unit system instructions for that configuration.
Use PAR1/PAR2 to connect the parallel-control bus. For one standalone unit, the parallel connection is unused and PRL is ON. For two units, both PRL switches are ON. For three to six units, the first and last PRL switches are ON and all intermediate PRL switches are OFF. Twist long parallel-control conductors in pairs to reduce noise.
For a three-phase, four-wire Y system, use SW1 S1/S2 OFF/OFF for L1 at 0°, OFF/ON for L2 at −120°, and ON/OFF for L3 at +120°. Each line-to-neutral voltage is the selected output voltage, and line-to-line voltage is √3 times that voltage. Follow the manufacturer’s three-phase wiring instructions.
This 124/148 version also supports a two-unit single-phase, three-wire split-phase system: SW1 OFF/OFF sets L1 at 0° and ON/ON sets L2 at +180°. Each line-to-neutral voltage is the selected output voltage; line-to-line voltage is twice it.
This unit is rated 4000 W continuously. Size a parallel bank from that per-unit rating and the applicable current-sharing and installation limits.
Communication and Signal Connections
COMM is an isolated CANBus interface referenced to GND-AUX: pin 1 GND-AUX; pin 2 CANH; pin 3 CANL; pin 4 +5V_AUX, 4.5–5.5 V relative to pin 1. Use AD1 and AD2 for the communication address according to the user manual.
The CRL connector enables 120 Ω communication-bus termination when pins 1 and 3 are shorted. When communication is not required, the catalogue calls for a jumper on pins 2 and 4.
PAR1 and PAR2 each use pin 1 +5V_AUX2 (4.5–5.5 V, only for remote ON/OFF), pin 2 GND_AUX2, pin 3 REMOTE ON/OFF, pin 4 SOLAR_ON_OFF for external MPPT-charger control, pin 5 DA, pin 6 SYNC_BUS, pin 7 DB and pin 8 SYNC_BUS2. These isolated signals reference GND_AUX2; the COMM ground reference is separately identified as GND-AUX.
The four-pin Power ON/OFF header is HRS DF11-04DP-2DS or equivalent, with HRS DF11-04DS mating housing. PAR1/PAR2 headers are HRS DF11-08DP-2DS or equivalent, with HRS DF11-08DS mating housings. The connector table specifies HRS DF11-**SC or equivalent contacts; select the exact contact variant for the wire and housing being assembled.
CMU2E and CMU2E-R are optional monitoring/control units listed for checking inverter status and adjusting output settings. Select the controller and communication arrangement appropriate to this model; they are separate from the standard accessories listed below.
Indicators
Status LED: steady green means inverter OK; flashing green means system check; steady orange means remote OFF; flashing orange means saving mode; red indicates an abnormal condition.
DC Input LED: steady green is 25–31 VDC; steady orange is 22–25 VDC; steady red is below 22 VDC or above 31 VDC. Flashing green indicates maintenance/float charging and flashing orange indicates charging.
Load LED is green below 40%, orange at 40–80% and red above 80% load. These colors are steady in inverter mode and flashing in bypass mode. AC Input LED is steady green for utility OK, flashing green for utility error and off when utility is disconnected.
Fault patterns: overload or AC short circuit gives steady red Status, DC Input off and flashing red Load. Abnormal DC voltage gives steady red Status, flashing red DC Input and Load off. Overtemperature or fan lock gives steady red Status with both DC Input and Load flashing red. Inverter failure gives flashing red Status with DC Input and Load off.
Dimensions, Terminals and Installation
| Catalogue dimensions, L × W × H |
460 × 211 × 83.5 mm |
| Case and drawing tolerance |
Case 223; ±0.5 mm |
| Mounting screw / penetration |
M4 / 5 mm maximum |
| Recommended mounting torque |
7–10 kgf·cm |
| AC terminal torque |
18 kgf·cm maximum |
| Catalogue mass per unit |
10.5 kg / 10500 g |
Both AC INPUT and AC OUTPUT terminals are numbered 1 FG, 2 AC/N and 3 AC/L. Bond the designated FG terminals correctly. Connect the DC battery positive and negative leads to the marked +V and −V bars, with the supplied red and black protectors fitted.
The mechanical drawing gives 460 mm enclosure length and separately shows the front connection/control projections of 28 mm maximum and 17 mm maximum, plus the 41.5 mm rear DC-terminal projection. Allow space for these projections, wiring and fan airflow. Use the complete drawing for the mounting-hole positions, 399 mm longitudinal mounting spacing and DC-bar hole geometry.
For the withstand-voltage and insulation-resistance test procedure, remove the identified Screw A temporarily and reinstall it after testing, as directed by the catalogue note and mechanical drawing.
The PACKING field gives 10.5 kg as the catalogue reference per unit, with one unit / 10.5 kg / 1.25 CUFT for the package. This reference is not a measured shipment weight.
Standard Accessories and System Supply
Included NTC parts: one sensor wire (UL2468 24×2C; drawing lengths 50 mm plus a 7 mm end) and one mating wire with JST PHR-02 or equivalent (UL1061 24 AWG; drawing length 60 mm plus a 5 mm end). Join them with a customer-supplied extension as shown, with the sensing element connected to the battery.
Included power-switch parts: one four-conductor Power ON/OFF connector lead and one switch lead, each using UL1061 24 AWG. The connector-lead drawing labels HRS DF11-4DP-2DS or equivalent and identifies pins 1/2 red, pins 3/4 black. The switch lead identifies 1/1a red and 2/2a black. Each lead has a 60 mm length and a 5 mm end callout; the switch drawing additionally marks 15 mm. Extend and join matching red/red and black/black conductors following the supplied connection drawing.
Included DC-terminal protection: one red protector, one black protector and four M3 mounting screws. Each protector is shown as 52 × 40.8 × 39.8 mm. Fit the protectors over the corresponding DC bars using the illustrated fixing positions.
System applications include home and office appliances, power tools, portable equipment, vehicles, yachts and off-grid supplies. A battery bank, external MPPT solar charger, solar panels, utility/generator source, load distribution and installation wiring are system components selected separately. The external MPPT charger is not built into the NTN unit.
The series uses conformal coating and temperature-controlled fan cooling. The manufacturer datasheet lists a five-year warranty; applicable supply terms govern coverage.
Safety, EMC and Reliability
| Listed safety approvals |
CB IEC62368-1; UL62368-1; CSA C22.2 No.62368-1; TUV BS EN/EN62368-1; EAC TP TC 004 |
| DC input to AC withstand |
3.0 kVAC |
| AC to FG withstand |
1.5 kVAC |
| Insulation resistance |
100 MΩ at 500 VDC, 25°C, 70% RH |
| MTBF, Telcordia SR-332 |
200.9 thousand hours minimum |
| MTBF, MIL-HDBK-217F |
17.8 thousand hours minimum at 25°C |
Insulation-resistance paths are DC input to AC output, DC input to FG, and AC output to FG. The inverter is a component for installation in a complete system; reconfirm EMC compliance in the final equipment.
Radiated and conducted emissions for this 110 VAC output group are specified to FCC Class A.
