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Mean Well NTU-1200-112US True Sine Wave DC-AC Inverter 1200W 110V out 12V 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-1200-112US

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Overview

NTU-1200-112US is the model of this series: typical efficiency 89%.

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-1200-112USSpecifications 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: 12Vdc
VOLTAGE RANGE (Typ.): 10 ~ 16.5Vdc
DC CURRENT (Typ.): 120A
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: 89%
BATTERY TYPES: Lead Acid or li-ion

PROTECTION

FUSE (INTERNAL): 40A*4
LOW ALARM: 11±0.3Vdc
LOW SHUTDOWN: 10±0.3Vdc
LOW RESTART: 12.5±0.3Vdc
HIGH ALARM: 15.5±0.3Vdc
HIGH SHUTDOWN: 16.5±0.3Vdc
HIGH RESTART: 15±0.3Vdc
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: UL458 (Only for “GFCI” AC socket, by request)

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

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-1200-112US AC Output Socket — AC Output Socket

NTU-1200-112US DERATING CURVE — DERATING CURVE

NTU-1200-112US IRC1/2/3 Remote Controller (Accessory — IRC1/2/3 Remote Controller (Accessory

NTU-1200-112US Support RS-232 Communication — Support RS-232 Communication

NTU-1200-112US AC Output Voltage、Frequency、Power — AC Output Voltage、Frequency、Power

NTU-1200-112US FUNCTION MANUAL — FUNCTION MANUAL

NTU-1200-112US MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

NTU-1200-112US Accessory List — Accessory List

NTU-1200-112US TYPICAL APPLICATION — TYPICAL APPLICATION

Typical applications

Downloads

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the Mean Well NTU-1200-112US designed for?

The NTU-1200-112US is a 1200W true sine wave DC-AC inverter for converting 12V DC input into AC output through a US socket. It is suited to applications that need utility-like AC power quality from a DC battery source. This model is part of Mean Well's NTU series and includes a built-in UPS bypass function.

Does this inverter provide true sine wave output?

Yes. The NTU-1200-112US provides true sine wave output with total harmonic distortion below 3%, which helps support equipment that is sensitive to output waveform quality. That makes it a better fit than modified sine wave units for many professional and electronics-focused applications.

What input and output ratings does this model support?

This model is rated for 1200W output and uses a 12V DC input (10 to 16.5Vdc range). Its AC output is selectable by DIP switch across 100/110/115/120VAC, with a factory default of 110VAC, and the frequency is selectable between 50 and 60Hz (default 60Hz). The product name variant is configured with a US socket and 110V output designation.

Can the NTU-1200-112US work with different battery types?

Yes. Mean Well specifies this inverter as suitable for both lead-acid and lithium-ion batteries. It also includes battery over-discharge protection with low-voltage disconnect to help protect the connected battery system.

What protection and surge capability does this inverter have?

The NTU-1200-112US includes protection for output short circuit, overload, over temperature, and DC input low and high voltage shutdown. It also supports surge power up to 2000W for higher startup demand loads. Overload behavior is specified as 105 to 115% load for 180 seconds and 115 to 150% load for 10 seconds.

Is this inverter suitable for demanding industrial or commercial environments?

It is designed for a wide operating temperature range of -25°C to +70°C, subject to the stated derating curve. The unit uses a built-in cooling fan and is rated for 10 to 500Hz, 3G vibration. Mean Well also lists CB IEC62368-1 approval and EMC compliance including FCC Class A emissions.

Are remote control and communication features available on this model?

Yes. The NTU-1200-112US supports power on/off remote control and RS-232 communication for monitoring or integration needs. Mean Well lists the remote controllers and the RS-232 communication cable as separate accessories rather than included standard items.

Payment & Security

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Model	Power	Voltage	Waveform	Frequency
Mean Well NTU-1200-148US True Sine Wave DC-AC Inverter 1200W 110V out 48V 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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