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Mean Well NTU-3200-148TB True Sine Wave DC-AC Inverter 3200W 110V out 48V in with TB Socket, with AC by-pass function

SKU NTU-3200-148TB

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Overview

NTU-3200-148TB is the model of this series: typical efficiency 91%.

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-3200-148TBSpecifications 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: 48Vdc
VOLTAGE RANGE (Typ.): 40 ~ 66Vdc
DC CURRENT (Typ.): 75A
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: 91%
BATTERY TYPES: Lead Acid or li-ion

PROTECTION

FUSE (INTERNAL): 25A*6
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: 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-3200-148TB AC Output Socket — AC Output Socket

NTU-3200-148TB DERATING CURVE — DERATING CURVE

NTU-3200-148TB Block Diagram — Block Diagram

NTU-3200-148TB IRC1/2/3 Remote Controller (Accessory — IRC1/2/3 Remote Controller (Accessory

NTU-3200-148TB Support RS-232 Communication — Support RS-232 Communication

NTU-3200-148TB AC Output Voltage、Frequency、Power — AC Output Voltage、Frequency、Power

NTU-3200-148TB FUNCTION MANUAL — FUNCTION MANUAL

NTU-3200-148TB MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

NTU-3200-148TB Accessory List — Accessory List

NTU-3200-148TB ※ Terminal protector mating along with NTU-3200… — ※ Terminal protector mating along with NTU-3200…

NTU-3200-148TB Illustration (page 9) — Illustration (page 9)

NTU-3200-148TB TYPICALTYPICAL APPLICATIONAPPLICATION — TYPICALTYPICAL APPLICATIONAPPLICATION

Typical applications

Downloads

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the Mean Well NTU-3200-148TB designed for?

The NTU-3200-148TB is a 3000W true sine wave DC-AC inverter for applications that need 110V AC output from a 48V DC source. It is suited to professional and industrial use cases where clean AC power, high surge capacity, and UPS-style AC by-pass capability are important.

What kind of AC output does this inverter provide?

This model provides true sine wave AC output with total harmonic distortion below 3%. That makes it a better fit for equipment that benefits from cleaner power than modified sine wave alternatives.

Does the NTU-3200-148TB support surge loads?

Yes. In addition to its 3000W continuous power rating, it supports surge power up to 6000W. That helps accommodate equipment with higher startup demand for short periods.

Does this model include an AC by-pass or UPS function?

Yes, the NTU-3200-148TB has a built-in UPS function with AC by-pass. This is a key differentiator for buyers who need continuity of AC output in systems that use both DC battery power and AC source availability.

What battery types is the NTU-3200-148TB compatible with?

According to the product specifications, it is suitable for both lead-acid and lithium-ion batteries. It also includes low DC input voltage protection, with an alarm at 44V, shutdown at 40V and restart at 50V.

Can the output voltage and frequency be selected on this inverter?

Yes. The AC output voltage and frequency are selectable by DIP switch, with 100/110/115/120VAC and 50/60Hz options on this model. For this specific model, the factory setting is 110V AC at 60Hz.

Is the NTU-3200-148TB suitable for demanding environments?

It is built for wide-temperature operation, with a listed working range of -25°C to +70°C and output derating at higher temperatures per the derating curve. It is fan-cooled and has over-temperature protection, which suits harsher operating environments than many general-purpose inverters.

What protections and certifications does this inverter include?

The NTU-3200-148TB includes protection for output short circuit, overload, over temperature, low and high DC input voltage, and battery reverse polarity via internal fuse. It is also listed with multiple safety and compliance approvals, including CB IEC62368-1, BS EN/EN62368-1, UL458 (TB socket type), EAC TP TC 004, and AS/NZS 62368.1.

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