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Mean Well NTS-750-248AU True Sine Wave DC-AC Inverter 750W 230V out 48V in with AU Socket

fanless designhigh efficiency up to 93%200% peak power capabilitybuilt-in dip switch to adjust AC output voltagefrequency and work mode

SKU NTS-750-248AU

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Overview

NTS-750-248AU is the model of this series: typical efficiency 93%.

NTS-750 is a 750W highly reliable off-grid true sine wave DC-AC power inverter. Its key features include: digital design with MCU control, streamlined control circuitry that quickly responds to environmental changes and improves reliability, high quality fan with low acoustic noise, 1500W peak power, adjustable AC output voltage and frequency, -25~+70℃ wide operating temperature range, complete protection features, and etc. combined with batteries, the NTS-750 is suitable for use in residential, commercial, marine, automobile, mine, construction site, and remote areas with no access to utility power, and the output can be used to power fans, TV, radio, phone charger, PC/laptop, lighting, electromechanical tool, communication equipment, power distribution cabinet, outdoor camping equipment, marine AC power, factory equipment, and etc.

Features

Compact size and light weight
True sine wave output (THD<3%)
High surge power up to 1500W
Temperature controlled cooling fan
AC output voltage and frequency selectable by DIP S.W
No load dissipation <1.5W at standby saving mode
-25℃~+70℃ wide operating temperature
Power ON-OFF remote control
Front panel indicator for operation status
Protections : Input : Reverse polarity / DC low alarm / DC low shutdown / Over voltage Output : Short circuit / Overload / Over temp.
Battery over discharge protection(Low voltage disconnect)
Suitable for lead-acid or li-ion batteries
Remote controller (IRC1, IRC2, IRC3 accessory sold separate, please refer to: https://www.meanwell.com/webapp/product/search.aspx?prod=IRC1)
Support RS-232 communication(Communication cable order No.: RJ11-RS232, sold sperately)
Carry handle accessory available(Order NO.: Carry handle, sold separately)
Conformal coating
3 years warranty

Specifications

NTS-750-248AUSpecifications from the official datasheet (2024-10-30 edition)

AC OUTPUT

RATED POWER(Continuous): 750W
OVER RATED POWER(3 Min.): 862W
PEAK POWER(10 Sec.): 1125W
SURGE POWER(30 Cycles): 1500W
AC VOLTAGE: Default setting set at 230VAC 200 / 220 / 230 / 240Vac selectable by DIP S.W
FREQUENCY: Default setting set at 50Hz±0.1Hz 50/60Hz selectable by DIP S.W
WAVEFORM^Note.1: True sine wave (THD<3%)
AC REGULATION: ±3.0% at rated output voltage
FRONT PANEL LED: Please see page5

DC INPUT

DC VOLTAGE: 48V
VOLTAGE RANGE (Typ.): 40 ~ 66Vdc
DC CURRENT (Typ.): 19A
NO LOAD NON-SAVING MODE: 12W
DISSIPATION (Typ.) SAVING MODE: 1.5W
OFF MODE CURRENT DRAW: ≦1mA
EFFICIENCY (Typ.)^Note.1: 93%
BATTERY TYPES: Lead Acid or li-ion

PROTECTION

FUSE (Internal): 25A*2
DC INPUT LOW ALARM: 44±1Vdc
DC INPUT LOW SHUTDOWN: 40±1Vdc
DC INPUT LOW RESTART: 50±1Vdc
DC INPUT HIGH ALARM: 62±1Vdc
DC INPUT HIGH SHUTDOWN: 66±1Vdc
DC INPUT HIGH RESTART: 60±1Vdc
BAT. POLARITY: By internal fuse open
OVER TEMPERATURE: Protection type : Shut down o/p voltage, re-power on to recover(except 112/124GFCI) Shut down o/p voltage,recovers automatically after temperature goes down(for 112/124GFCI)
OUTPUT SHORT: Protection type : Shut down o/p voltage, re-power on to recover
OVER LOAD (Typ.): 105 ~ 115% load for 180 sec., 115% ~ 150% load for 10 sec. Protection type : Shut down o/p voltage, re-power on to recover
GFCI PROCTECTION: None

FUNCTION

REMOTE CONTROL DRY CONTACT: Power ON-OFF remote control by front panel dry contact connector (by RELAY), Open : Normal work ; Short : Remote off
REMOTE CONTROL ACCESSORY: Remote controller sold separately, Order No.: IRC1,IRC2,IRC3
RS-232 COMMUNICATION: RS-232 ~ RJ11 Type connector (Please refer to page 4 for more details)

ENVIRONMENT

WORKING TEMP.: -25 ~ +70℃(Refer to “Derating curve”)
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -30 ~ +70℃ / -22 ~ +158oF, 10 ~ 95% RH non-condensing
VIBRATION: 10 ~ 500Hz, 3G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: CB IEC62368-1,Dekra BS EN/EN62368-1,UL458, E13,EAC TP TC 004 approved;Design refer to AS/NZS 62368.1 (Please refer to next page “AC output socket” table for more details )
WITHSTAND VOLTAGE: DC I/P - AC O/P:3.0KVac AC O/P - FG:1.5KVac
EMC EMISSION^Note.4: Parameter Standard Test Level

FCC for 112,124,148 only(expect for Type-UN) Radiated Class A
BS EN/EN55032(CISPR32) for 212,224,248 only(expect for Type-UN) Radiated Class A
Harmonic Current BS EN/EN61000-3-2
Voltage Flicker BS EN/EN61000-3-3 -----; BS EN/EN55024, BS EN/EN55035
EMC IMMUNITY^Note.4: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact
Radiated BS EN/EN61000-4-3 Level 2, 3V/m
Magnetic Field BS EN/EN61000-4-8 Level 1, 1A/m

Parameter	Standard	Test Level
FCC for 112,124,148 only(expect for Type-UN)	Radiated	Class A
BS EN/EN55032(CISPR32) for 212,224,248 only(expect for Type-UN)	Radiated	Class A
Harmonic Current	BS EN/EN61000-3-2
Voltage Flicker	BS EN/EN61000-3-3	-----; BS EN/EN55024, BS EN/EN55035

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 4KV contact
Radiated	BS EN/EN61000-4-3	Level 2, 3V/m
Magnetic Field	BS EN/EN61000-4-8	Level 1, 1A/m

OTHERS

MTBF: 715.7K hrs min. Telcordia TR/SR-332 (Bellcore) ; 78K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 270*158*67mm (L*W*H)
PACKING: 2.3Kg; 4pcs/ 10.2Kg/ 1.9CUFT

Test conditions and notes4

1.Efficiency, AC regulation and THD are tested by 600W, linear load at 12.5Vdc/25Vdc/50Vdc input voltage.
2.All parameters not specified above are measured at rated load, 25℃ of ambient temperature and set to factory setting.
3.Internal pre-start circuit, the setup time is 8s.
4.The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )

Technical drawings

NTS-750-248AU AC Output Socket — AC Output Socket

NTS-750-248AU DERATING CURVE — DERATING CURVE

NTS-750-248AU IRC1/2/3 Remote Controller (Accessory — IRC1/2/3 Remote Controller (Accessory

NTS-750-248AU Support RS-232 Communication — Support RS-232 Communication

NTS-750-248AU AC Output Voltage、Frequency、Power — AC Output Voltage、Frequency、Power

NTS-750-248AU MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

NTS-750-248AU Accessory List — Accessory List

NTS-750-248AU TYPICALTYPICAL APPLICATIONAPPLICATION — TYPICALTYPICAL APPLICATIONAPPLICATION

Typical applications

Downloads

Certificates6

MeanWell NTS-750 Certificate PDF Download

FAQ

What is the main use case for the Mean Well NTS-750-248AU?

This model is a 750W true sine wave DC-AC inverter designed to convert 48V DC input into 230V AC output. It suits business and industrial applications where clean AC power is needed from a 48V battery-based system, such as mobile, backup, or off-grid equipment.

Does the NTS-750-248AU produce true sine wave output?

Yes. The NTS-750-248AU provides a true sine wave AC output with total harmonic distortion below 3%, which makes it suitable for equipment that needs cleaner power than a modified sine wave inverter can provide. This is one of the key differences that sets it apart for sensitive AC loads.

What are the key electrical specifications of this inverter?

This model is rated at 750W continuous output and supports surge power up to 1500W. It uses a 48V DC input and this AU version is configured for 230V AC output, with selectable AC output voltage options available by DIP switch within the product's supported range.

Is the NTS-750-248AU suitable for harsh operating environments?

It is specified for a working temperature range of -25°C to +70°C, with output derating applying at higher temperatures. The unit is fan cooled and shuts down its output on over-temperature, and it is rated for 3G vibration from 10 to 500Hz.

What protection features are included in the NTS-750-248AU?

The inverter includes protection for output short circuit, overload, and over-temperature conditions. It also has DC input low and high voltage shutdown (40V and 66V, with a low-voltage alarm at 44V), helping protect the connected battery system during use.

Is this inverter compatible with different battery types and remote controls?

Yes. The NTS-750-248AU is specified as suitable for lead-acid and lithium-ion battery systems. It also supports optional remote controllers in the IRC1, IRC2, and IRC3 series, which are sold separately.

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Model	Power	Voltage	Waveform	Frequency
Mean Well NTS-750-224AU True Sine Wave DC-AC Inverter 750W 230V out 24V in with AU Socket	750W	230V	True Sine Wave	50Hz	View
Mean Well NTS-750-212AU True Sine Wave DC-AC Inverter 750W 230V out 12V in with AU Socket	750W	230V	True Sine Wave	50Hz	View

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