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Mean Well NTU-3200-112US True Sine Wave DC-AC Inverter 3200W 110V out 12V in with US Socket, with AC by-pass function

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-3200-112US

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Overview

NTU-3200-112US is the model of this series: typical efficiency 89%.

NTU-3200 is a 3200W highly reliable off-grid true sine wave DC-AC power inverter with built-in UPS function. 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, 6400W peak power, adjustable AC output voltage and frequency, -25~+70℃ wide operating temperature range, complete protection features, and etc. Combined with batteries, the NTU-3200 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 6400W
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-3200-112USSpecifications from the official datasheet (2026-02-04 edition)

AC OUTPUT

RATED POWER(Continuous): 3000W
OVER RATED POWER(3 Min.): 3500W
PEAK POWER(10 Sec.): 4500W
SURGE POWER(30 Cycles): 6000W
AC VOLTAGE: Factory setting set at 110VAC 100 / 110 / 115 / 120Vac selectable by DIP S.W
FREQUENCY: Factory 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.): 300A
NO LOAD DISSIPATION (SAVING MODE)(Typ.)^Note.2: Default disable, auto detect AC output load≦10W will be changed to saving mode <15W
OFF MODE CURRENT DRAW: ≦2mA
EFFICIENCY (Typ.)^Note.1: 89%
BATTERY TYPES: Lead Acid or li-ion

PROTECTION

FUSE (INTERNAL): 40A*12
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: 30A
TB TYPE: UL458 (Only for "TB" type AC socket)

FUNCTION CONTROL

REMOTE CONNECTOR: Power ON-OFF remote control by front panel dry contact connector(by RELAY), Open : Normal work ; Short : Remote off
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

SAFETY STANDARDS: CB IEC62368-1,Dekra Seal BS EN/ EN62368-1,UL458, E13,EAC TP TC 004,AS/NZS 62368.1 approved (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^Note.5: 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: 319.3K hrs min. Telcordia TR/SR-332 (Bellcore) ; 30.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 420*270*98mm (L*W*H)
PACKING: 8.6Kg; 1pcs/ 10.4Kg/ 1.39CUFT

Test conditions and notes5

1.Efficiency, AC regulation and THD are tested by 2400W load, linear load at 12.5Vdc/25Vdc/50Vdc input voltage.
2.No load dissipation at non-saving mode(Typ.): 112/124/148 for 25W, 212/224/248 for 55W.
3.All parameters not specified above are measured at rated load, 25℃ of ambient temperature and set to factory setting.
4.Internal pre-start circuit, the setup time is 8s.
5.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-3200-112US AC Output Socket — AC Output Socket

NTU-3200-112US DERATING CURVE — DERATING CURVE

NTU-3200-112US Block Diagram — Block Diagram

NTU-3200-112US IRC1/2/3 Remote Controller (Accessory — IRC1/2/3 Remote Controller (Accessory

NTU-3200-112US Support RS-232 Communication — Support RS-232 Communication

NTU-3200-112US AC Output Voltage、Frequency、Power — AC Output Voltage、Frequency、Power

NTU-3200-112US FUNCTION MANUAL — FUNCTION MANUAL

NTU-3200-112US MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

NTU-3200-112US Accessory List — Accessory List

NTU-3200-112US ※ Terminal protector mating along with NTU-3200… — ※ Terminal protector mating along with NTU-3200…

NTU-3200-112US Illustration (page 9) — Illustration (page 9)

NTU-3200-112US TYPICALTYPICAL APPLICATIONAPPLICATION — TYPICALTYPICAL APPLICATIONAPPLICATION

Typical applications

Downloads

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the main use case for the Mean Well NTU-3200-112US inverter?

The NTU-3200-112US is a 3000W true sine wave DC-AC inverter designed for applications that need 110V AC output from a 12V DC source. It is suited to commercial, industrial, mobile, and backup power scenarios where sensitive AC equipment benefits from a low-distortion sine wave output.

Does this model provide pure sine wave output for sensitive equipment?

Yes. The NTU-3200-112US provides true sine wave output with total harmonic distortion below 3%, which makes it a better fit for electronics and equipment that expect utility-like AC power. This distinguishes it from modified sine wave inverters used in less demanding applications.

What are the input and output ratings of the NTU-3200-112US?

This model is rated for 3000W continuous power, with 12V DC input and 110V AC output (factory setting) in this US version. It also supports surge power up to 6000W for short-duration demand. AC output voltage (100/110/115/120VAC) and frequency (50/60Hz) are selectable by DIP switch.

Does the NTU-3200-112US include an AC by-pass or UPS-style function?

Yes. This inverter includes a built-in UPS function with AC by-pass capability, which is one of the key differentiators of the NTU series. For buyers comparing models, that means it is intended for applications where continuity of AC power is important.

What battery types is the NTU-3200-112US compatible with?

According to the product data, this model is suitable for use with lead-acid or lithium-ion batteries. It also includes low DC input voltage protection (alarm at 11V, shutdown at 10V, restart at 12.5V), which helps protect the connected battery system.

Can this inverter be used in demanding temperature conditions?

Yes. The NTU-3200-112US is specified for a working temperature range of -25°C to +70°C, with output derating at higher temperatures per the derating curve. It is fan-cooled and has over-temperature protection that shuts down the output until re-powered.

What protection and status features are included on this model?

The NTU-3200-112US includes protection for output short circuit, overload, over temperature, and high DC input voltage, along with low DC input voltage shutdown to protect the battery. It also has front-panel operation status indicators and supports remote on/off control, which can be useful in managed power systems.

What certifications and warranty does the NTU-3200-112US have?

This model is listed with approvals including CB IEC62368-1, BS EN/EN62368-1, EAC TP TC 004, and AS/NZS 62368.1, with FCC Class A EMC emissions; UL458 applies to the TB socket version only. The spec sheet does not state a warranty period.

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Model	Power	Voltage	Waveform	Frequency
Mean Well NTU-3200-148UN True Sine Wave DC-AC Inverter 3200W 110V out 48V in with UN Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-148TB True Sine Wave DC-AC Inverter 3200W 110V out 48V in with TB Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-124TB True Sine Wave DC-AC Inverter 3200W 110V out 24V in with TB Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-124UN True Sine Wave DC-AC Inverter 3200W 110V out 24V in with UNSocket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-112TB True Sine Wave DC-AC Inverter 3200W 110V out 12V in with TB Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-112UN True Sine Wave DC-AC Inverter 3200W 110V out 12V in with UN Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-148US True Sine Wave DC-AC Inverter 3200W 110V out 48V in with US Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-124US True Sine Wave DC-AC Inverter 3200W 110V out 24V in with US Socket, with AC by-pass function	3200W	110V	True Sine Wave	50Hz	View
Mean Well NTU-3200-248AU True Sine Wave DC-AC Inverter 3200W 220V out 48V in with AU Socket, with AC by-pass function	3200W	240V	True Sine Wave	50Hz	View
Mean Well NTU-3200-224AU True Sine Wave DC-AC Inverter 3200W 220V out 24V in with AU Socket, with AC by-pass function	3200W	220V	True Sine Wave	50Hz	View
Mean Well NTU-3200-212AU True Sine Wave DC-AC Inverter 3200W 220V out 12V in with AU Socket, with AC by-pass function	3200W	200V	True Sine Wave	50Hz	View

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