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Mean Well NTU-1200-148US True Sine Wave DC-AC Inverter 1200W 110V out 48V in with US Socket

built-in UPS function(AC by-pass)built-in dip switch to adjust AC output voltagefrequency and saving modecan be remotely controlled by IRC controllers

SKU NTU-1200-148US

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Overview

NTU-1200-148US is the model of this series: typical efficiency 91%. Type US: AC output socket (Type US, EU, CN, AU, UK, UN, GFCI outlet).

NTU-1200 is a 1200W highly reliable off-grid true sine wave DC-AC power inverter with built-in UPS function(AC by-pass). 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, 2000W peak power, adjustable AC output voltage and frequency, -25~+70℃ wide operating temperature range, complete protection features, and etc. Combined with batteries, the NTU-1200 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, induction stove, air conditioner, electromechanical tool, communication equipment, power distribution cabinet, outdoor camping equipment, marine AC power, factory equipment, and etc.

Features

Built-in UPS function (AC by-pass)
True sine wave output (THD<3%)
High surge power up to 2000W
Temperature controlled cooling fan
AC output voltage and frequency selectable by DIP S.W
-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 separately, 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

NTU-1200-148USSpecifications from the official datasheet (2026-02-04 edition)

AC OUTPUT

RATED POWER(Continuous): 1200W
OVER RATED POWER(3 Min.): 1380W
PEAK POWER(10 Sec.): 1800W
SURGE POWER(30 Cycles): 2000W
AC VOLTAGE: Default setting set at 110VAC 100 / 110 / 115 / 120Vac selectable by DIP S.W
FREQUENCY: Default setting set at 60±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 page 5

DC INPUT

DC VOLTAGE: 48Vdc
VOLTAGE RANGE (Typ.): 40 ~ 66Vdc
DC CURRENT (Typ.): 30A
NO LOAD DISSIPATION (Typ.) NON-SAVING MODE: 15W
NO LOAD DISSIPATION (Typ.) SAVING MODE: Default disable, auto detect AC output load≦10W will be changed to saving mode <8W
OFF MODE CURRENT DRAW: ≦1mA
EFFICIENCY (Typ.)^Note.1: 91%
BATTERY TYPES: Lead Acid or li-ion

PROTECTION

FUSE (INTERNAL): 25A*2
LOW ALARM: 44±1Vdc
LOW SHUTDOWN: 40±1Vdc
LOW RESTART: 50±1Vdc
HIGH ALARM: 62±1Vdc
HIGH SHUTDOWN: 66±1Vdc
HIGH RESTART: 60±1Vdc
BAT. POLARITY: By internal fuse open
OVER TEMPERATURE: Protection type : Shut down o/p voltage, re-power on to recover
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
CIRCUIT BREAKER: 15A
GFCI PROCTECTION: None

FUNCTION

REMOTE CONTROL CONNECTOR: 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)

AC UPS MODE

AC INPUT RANGE: 100/110/115/120Vac±16%, recover±13%
FREQUENCY RANGE: 45 ~ 65Hz
TRASFER TIME(Typ.): 10ms inverter <--> AC by pass

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 (Note.4)

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 I/P:3.0KVac DC I/P - AC O/P:3.0KVac AC O/P - FG:1.5KVac
EMC EMISSION: Parameter Standard Test Level

Radiated FCC for 112,124,148 only(expect for Type-UN) Class A
Radiated BS EN/ EN55032(CISPR32) for 212,224,248 only(expect for Type-UN) Class A
Conducted FCC for 112,124,148 only(expect for Type-UN) Class A
Conducted BS EN/ EN55032(CISPR32) for 212,224,248 only(expect for Type-UN) Class A
Harmonic Current BS EN/EN61000-3-2 Class A
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: 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
EFT / Burst BS EN/EN61000-4-4 Level 2, 1KV
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line 2KV/Line-Earth
Conducted BS EN/EN61000-4-6 Level 2
Magnetic Field BS EN/EN61000-4-8 Level 1
Voltage Dips and Interruptions BS EN/EN61000-4-11 >95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

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

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
EFT / Burst	BS EN/EN61000-4-4	Level 2, 1KV
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line 2KV/Line-Earth
Conducted	BS EN/EN61000-4-6	Level 2
Magnetic Field	BS EN/EN61000-4-8	Level 1
Voltage Dips and Interruptions	BS EN/EN61000-4-11	>95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

OTHERS

MTBF: 460.5K hrs min. Telcordia TR/SR-332 (Bellcore) ; 58.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 333*184*70mm (L*W*H)
PACKING: 3.3Kg; 2pcs/ 7.6Kg/ 1.25CUFT

MODEL ENCODING

1: AC output voltage (1: 100/110/115/120Vac, 2:200/220/230/240Vac)
12: DC input voltage (12: 12Vdc, 24: 24Vdc, 48: 48Vdc)
US (this model): AC output socket (Type US, EU, CN, AU, UK, UN, GFCI outlet)

Test conditions and notes4

1.Efficiency, AC regulation and THD are tested by 900W load, 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

NTU-1200-148US AC Output Socket — AC Output Socket

NTU-1200-148US DERATING CURVE — DERATING CURVE

NTU-1200-148US Support RS-232 Communication — Support RS-232 Communication

NTU-1200-148US AC Output Voltage、Frequency、Power — AC Output Voltage、Frequency、Power

NTU-1200-148US FUNCTION MANUAL — FUNCTION MANUAL

NTU-1200-148US MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

NTU-1200-148US TYPICAL APPLICATION — TYPICAL APPLICATION

Typical applications

Downloads

Datasheet1

NTU-1200-148US datasheetNTU-1200-SPEC.PDF · 2026-02-04 edition PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the main use case for the Mean Well NTU-1200-148US inverter?

This model is designed to convert 48V DC input power into 110V AC output for equipment that requires a true sine wave source. It is suited to professional and industrial applications where stable AC power is needed from a DC battery-based system. Its built-in UPS bypass function also makes it relevant for backup power scenarios.

What output power does the NTU-1200-148US provide?

The NTU-1200-148US is rated for 1200W continuous output power. It also supports surge power up to 2000W, which can help with loads that need higher startup demand. Buyers should still size the inverter around the actual continuous and surge requirements of their equipment.

Does this inverter produce a true sine wave output?

Yes, this model provides a true sine wave AC output with total harmonic distortion below 3%. That makes it a better fit for sensitive electronics and equipment that perform best with cleaner AC power. This is a key differentiator compared with modified sine wave alternatives.

Is the AC output fixed at 110V only?

No, the AC output voltage is selectable by DIP switch across 100/110/115/120VAC, with 110VAC as the factory default. The output frequency can also be set to 50 or 60Hz (default 60Hz). This specific model is listed as 110V out with a US socket, so buyers commonly choose it for 110V applications.

What battery types is the NTU-1200-148US compatible with?

According to the product data, it is suitable for lead-acid or lithium-ion batteries. The inverter uses a 48V DC input platform, so it is intended for systems built around that nominal DC input. This makes it useful for buyers comparing battery chemistries within the same power architecture.

Can this inverter be used in demanding temperature conditions?

It is specified for operation from -25°C to +70°C, with reference to the output derating curve at higher temperatures. That range makes it suitable for many industrial and enclosed-system environments where temperature swings are a consideration. The unit also includes a built-in cooling fan to support thermal management.

What protection and monitoring features are included on this model?

The NTU-1200-148US includes protection for output short circuit, overload, over temperature, DC input high voltage, and battery over-discharge through low voltage shutdown. It also has front panel indicators for operating status and supports RS-232 communication. These features are useful for buyers who need a more monitorable and protected inverter for business applications.

Payment & Security

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Model	Power	Voltage	Waveform	Frequency
Mean Well NTU-1200-112US True Sine Wave DC-AC Inverter 1200W 110V out 12V in with US Socket	1200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-1200-248AU True Sine Wave DC-AC Inverter 1200W 220V out 48V in with AU Socket	1200W	240V	True Sine Wave	50Hz	View
Mean Well NTU-1200-224AU True Sine Wave DC-AC Inverter 1200W 220V out 24V in with AU Socket	1200W	220V	True Sine Wave	50Hz	View
Mean Well NTU-1200-212AU True Sine Wave DC-AC Inverter 1200W 200V out 12V in with AU Socket	1200W	200V	True Sine Wave	50Hz	View

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