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Mean Well ES-SU3K-THB Uninterruptible Online UPS with Buit-in Battery 8A

uninterruptible Online UPS
SKU ES-SU3K-THB
$521.78 USD
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Overview

ES-SU3K-THB is the 200/208/220/230/240Vac output model of this series: typical efficiency 97%. Type Blank: No Battery.

ES-SU3K is a 3KVA online UPS power supply, providing rack type and tower type two appearance structures, using advanced digital control technology, combined with high integrated circuits and optimized design, enhance anti-interference ability, and ensure stable performance. The product has a full load efficiency of up to 94%, an input power factor of over 0.99, and a current harmonic of less than or equal to 5%, which can effectively prevent additional energy loss and reduce grid pollution. Its ultra-wide voltage input range is compatible with unstable power grids and fuel generators, which can easily cope with harsh power environments, reduce the need for frequent switching to battery power, and accurately match the needs of highly sensitive loads such as servers and medical equipment. In addition, the product has built-in EPO emergency power-off function and USB/RS-232 dual communication interfaces, which further strengthens the system security and remote control capabilities, It provides efficient, stable and flexible power protection solutions for key scenarios such as data centers, intelligent manufacturing, and communication base stations.

Features

  • Supporting connection to fuel generators
  • Ultra-wide input voltage range: 110V to 300Vac
  • Input power factor ≥ 0.99
  • Input current harmonic distortion ≤ 5%
  • Output power factor of 1
  • 50Hz/60Hz frequency conversion mode
  • Emergency power-off function (EPO)
  • USB/RS-232 communication interfaces
  • LCD display panel
  • Intelligent charging mode, adjustable charging current
  • 3-year warranty

Specifications

ES-SU3K-THBSpecifications from the official datasheet (2026-04-08 edition)

INPUT

Nominal Voltage
110~300Vac(Based on load at 50%); 160~300Vac(Based on load at 100%)
Frequency Range
40~70Hz
Power Factor
≥0.99@nominal voltage(100%load)
THDi
≤5%@100% resistive load

Battery

Connection Type
built-in(12V/9AH*6)
Charging Voltage (FV)
72V
Low-Voltage Protection Point
67.7V
High-Voltage Protection Point
90V
Charing Current (CC)
8A(1/2/4/6/8A adjustable through LCD)

OUTPUT

Power
3KVA/3KW
Output VoltageNote 1
200/208/220/230/240Vac
AC Voltage Regulation
±1%
Frequency AC Mode
47~53Hz/57~63Hz
Frequency Battery Mode
50/60±0.1Hz
Waveform Battery Mode
Pure Sinewave
Harmonic Distortion
≤2%THD(Linear Load); ≤5%THD(Non-linear Load)
Transfer Time AC to Battery
0
Transfer Time Online to Bypass
4ms(Typical)
Transfer Time ECO to Battery
8ms(Typical),10ms(max)
Efficiency ECO Mode@full charged battery
97%
Efficiency AC Mode @full charged battery
94%
Efficiency Battery Mode
91%

SAFETY & EMC

SAFETY STANDARDS
EN IEC 62040-1:2019/A11:2021,YD/T1095-2018
EMC EMISSION
ParameterStandardTest Level
Conducted emissionEN IEC 62040-2:2018C2
Radiated emissionEN IEC 62040-2:2018C2
Harmonic currentEN IEC 61000-3-12:2011Class A
Voltage flickerEN IEC 61000-3-11:2019Clause 5
EMC IMMUNITY
ParameterStandardTest Level
ESDEN 61000-4-2:2008Level 3, 4KV air; Level 2: 4KV contact
RSEN 61000-4-3:2006Level 3
EFTEN 61000-4-4:2012Level 4,1KV
SurgeEN 61000-4-5:2014Level 4,1KV/Line-Line 2KV/Line-Earth
ConductedEN 61000-4-6:2013Level 3
Magnetic FieldEN 61000-4-8:2009Level 4
Voltage Dips and InterruptionsEN IEC 61000-4-11:2020100% residual voltage for 0.5cycle; 100% residual voltage for 1cycle; 100% residual voltage for 250cycle; 30% residual voltage for 25cycle

OTHER

Communication interface
RS232/USB
Phase
single phase with groud
Display
LCD
Operating temperature
0~40℃
Humidity
20-90% relative humidity(non-condensing)
ElevationNote 2
1000m
Struture
Tower
Weight
26.2kg
Size
426*190*338mm

Certifications & ratings

Marked features
Industrial, Network, Security

MODEL ENCODING

B
Built-in Battery
Blank (this model)
No Battery
TH
Exterior structure
RH
Exterior structure
Test conditions and notes2
  1. 1. Derate capacity to 80% when the output voltage is adjusted to 200VAC/208VAC
  2. 2. if the UPS is installed or used in a place where the altitude is above than 1000m. the outout power must be derated one percent per 100m.

Technical drawings

ES-SU3K-THB Mechanism Dimension
Mechanism Dimension
ES-SU3K-THB External Battery
External Battery
ES-SU3K-THB LCD Panel
LCD Panel
ES-SU3K-THB Output & Battery voltage information
Output & Battery voltage information
ES-SU3K-THB Audible Alarm
Audible Alarm
ES-SU3K-THB LCD diaplay wording index
LCD diaplay wording index
ES-SU3K-THB Accessories List
Accessories List
ES-SU3K-THB Multiple UPS systems can be controlled and monitored via
Multiple UPS systems can be controlled and monitored via
ES-SU3K-THB PSWG-ES-SU-SNMP
PSWG-ES-SU-SNMP
ES-SU3K-THB It supports the MODBUS RTU communication protocol.
It supports the MODBUS RTU communication protocol.

Typical applications

  • Data center
  • Financial institution
  • Smart Buildings
  • Industrial automation

Downloads

FAQ

What applications is the Mean Well ES-SU3K-THB best suited for?

The ES-SU3K-THB is a 3KVA/3KW online UPS designed for applications that need stable AC backup power with battery support. It is suitable for commercial and industrial equipment, including power supply and security-related environments where continuous operation is important.

What is the power capacity of the ES-SU3K-THB?

This model is rated at 3KVA / 3KW, with an output power factor of 1. That means its kVA and kW ratings are matched, which is useful for loads that require full real power output from the UPS.

Can the ES-SU3K-THB work with unstable mains power or generator-backed systems?

Yes. The ES-SU3K-THB supports connection to fuel generators and has an ultra-wide input voltage range of 110V to 300Vac at 50% load, or 160V to 300Vac at 100% load. This makes it a practical option where incoming AC supply conditions may vary.

What output voltage options does the ES-SU3K-THB provide?

The ES-SU3K-THB supports selectable output voltages of 200, 208, 220, 230, and 240Vac. It also includes a 50Hz/60Hz frequency conversion mode, which can help when matching equipment requirements across different power standards.

How can users monitor the ES-SU3K-THB?

This UPS includes an LCD display panel for local status visibility and provides USB and RS-232 communication interfaces. Those features make it easier to monitor operating status and battery-related information for this specific model.

What operating environment is recommended for the ES-SU3K-THB?

The specified operating temperature range for the ES-SU3K-THB is 0°C to 40°C. The unit measures 426 x 190 x 338 mm and weighs 26.2 kg, so buyers should confirm the installation space and ambient conditions are suitable for a UPS of this size.

What battery charging features does the ES-SU3K-THB include?

The ES-SU3K-THB uses an intelligent charging mode with adjustable charging current. The charging current is rated at 8A and can be adjusted through the LCD to 1A, 2A, 4A, 6A, or 8A.

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Bancontact
  • Bizum
  • Diners Club
  • Discover
  • Google Pay
  • iDEAL Wero
  • Mastercard
  • PayPal
  • Satispay
  • Shop Pay
  • USDC
  • Venmo
  • Visa

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Mean Well

Mean Well ES-SU3K-THB Uninterruptible Online UPS with Buit-in Battery 8A

$521.78 USD

ES-SU3K-THB is the 200/208/220/230/240Vac output model of this series: typical efficiency 97%. Type Blank: No Battery.

ES-SU3K is a 3KVA online UPS power supply, providing rack type and tower type two appearance structures, using advanced digital control technology, combined with high integrated circuits and optimized design, enhance anti-interference ability, and ensure stable performance. The product has a full load efficiency of up to 94%, an input power factor of over 0.99, and a current harmonic of less than or equal to 5%, which can effectively prevent additional energy loss and reduce grid pollution. Its ultra-wide voltage input range is compatible with unstable power grids and fuel generators, which can easily cope with harsh power environments, reduce the need for frequent switching to battery power, and accurately match the needs of highly sensitive loads such as servers and medical equipment. In addition, the product has built-in EPO emergency power-off function and USB/RS-232 dual communication interfaces, which further strengthens the system security and remote control capabilities, It provides efficient, stable and flexible power protection solutions for key scenarios such as data centers, intelligent manufacturing, and communication base stations.

Features

  • Supporting connection to fuel generators
  • Ultra-wide input voltage range: 110V to 300Vac
  • Input power factor ≥ 0.99
  • Input current harmonic distortion ≤ 5%
  • Output power factor of 1
  • 50Hz/60Hz frequency conversion mode
  • Emergency power-off function (EPO)
  • USB/RS-232 communication interfaces
  • LCD display panel
  • Intelligent charging mode, adjustable charging current
  • 3-year warranty

Typical applications

  • Data center
  • Financial institution
  • Smart Buildings
  • Industrial automation
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