10000 Woodward Avenue
Woodridge, Illinois 60517
+1 773-869-1776
+1 (773) 869-1329
United States
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Possible Product/Country Incompatibility

This product may be incompatible with your voltage or frequency, or it may be designed to comply with the standards or usage in another country. [MP0042]

Product Status Discontinued on 1/12/2023


Battery Backup and VFI Operation Protect Critical Loads
The SmartOnline® S3M40KXD IGBT UPS supports the continuous availability of your most important loads through all power conditions, providing a compact backup power platform that’s easy to manage and inexpensive to operate. Sophisticated voltage and frequency independent (VFI) operation and advanced IGBT rectifier technology with DSP control deliver reliable output power quality. Providing up to 40kVA of clean, continuous power, this 3-phase UPS system is perfect for critical applications in IT, communications, corporate, commercial, retail, financial, security, transportation, emergency and edge infrastructure environments.
Best-in-Class Footprint for Easy Integration into Your Network Application
This on-line double-conversion UPS system has a very small footprint of just 0.24 square meters. It requires less valuable space in your facility, and you can install the UPS system in spaces that would previously have required expensive retrofitting.
Efficient Operation and Design Reduces Cost of Ownership
This UPS benefits from highly efficient transformer-free double-conversion technology that delivers operating cost savings. It achieves 94% efficiency in double-conversion mode and up to 98% in ECO mode, reducing your power and cooling costs. A low THDi (<3%) improves generator compatibility. A low THDv (≤2%) and active power factor correction improve output performance. The hardware and firmware platform design reduces the number of unique boards, improving mean time to repair (MTTR) and resulting in reduced downtime. Built-in static and maintenance bypass transfer UPS load to utility power during faults, overloads and maintenance, which also avoids costly system downtime.
Supplies Reliable Battery Backup with Expandable Runtime Options
Internal 10Ah batteries provide 15 minutes of support at half load and five minutes at full load with zero transfer time. Adding external battery cabinets, such as BP480V10 (sold separately), provides extended runtime. The S3M40KX automatically restarts after a lengthy power outage.
Intuitive LCD Interface Delivers Important Performance Information at a Glance
The interactive front-panel LCD interface displays critical operating conditions and diagnostic data, including operating mode, input/output voltage, load, battery voltage, backup runtime and fault conditions. Four LEDs provide information about line, bypass, battery and fault status.
Network Management Card Offers Remote Monitoring and Control
The optional WEBCARDLX (sold separately) with the latest version of PowerAlert Device Manager firmware (PADM20) provides enhanced remote management capabilities, including customizable dashboard graphs to fit user preferences. The PADM20 upgrade and Tripp Lite’s PowerAlert Element Manager (PAEM) software form a powerful tool for expanding maintenance functions in large installations, including firmware update checks and backup and restoration of device configurations.
Parallel Capability Provides Additional Capacity
Connect up to three S3M40KXD units in parallel using separate/shared battery cabinets for increased capacity or for redundancy.
2-Year Warranty Provides Peace of Mind
The S3M40KXD is backed by a 2-year warranty, ensuring reliability and performance.

Package Includes

  • S3M40KXD SmartOnline S3MX Series 3-Phase 380/400/415V 40kVA 36kW On-Line Double-Conversion UPS
  • RS-232 cable
  • Paralleling cable kit
  • Owner’s manual
RoHS compliant


UPC Code037332239761
UPS TypeOn-Line
Input Phase3-Phase
Rated input current (Maximum Load)61A
Nominal Input Voltage(s) Supported220/380V 3-PH Wye; 230/400V 3-PH Wye; 240/415V 3-PH Wye
Nominal Input Voltage Description3-Phase Wye, 4 wire plus ground (L1, L2, L3, N, G)
UPS Input Connection TypeHardwire
Input Circuit Breakers80A (3 pole)
Power Factor (Input)  .99PF (100% load)
THDi  <3% (100% load)
Output Capacity (VA)40000
Output Capacity (kVA)40
Output Capacity (Watts)36000
Output Capacity (kW)36.00
Output Capacity DetailsSupports up to 100% load continuously in double conversion mode; Supports 100-110% load for 10 minutes, 110 to 130% load for 1 minute and greater than 130% for 1 second before switching to bypass mode; Inverter mode is automatically restored as load levels are reduced to less than 70%; Configuration options support up to 3 S3M30KX systems wired in parallel for increased capacity or fault-tolerant, redundant operation
Power Factor  0.9
Crest Factor  3:1
Frequency Compatibility50 / 60 Hz; Supports 50 to 60 Hz and 60 to 50 Hz conversion
Frequency Compatibility DetailsAutomatic frequency selection
Output Voltage Regulation (Line Mode)+/- 1%
Output Voltage Regulation (Economy Line Mode)+/-11V of nominal
Output Voltage Regulation (Battery Mode)+/- 1%
Output AC Waveform (AC Mode)Pure Sine wave
Output AC Waveform (Battery Mode)Pure Sine wave
Nominal Output Voltage(s) Supported220/380V 3-PH Wye; 230/400V 3-PH Wye; 240/415V 3-PH Wye
Output ReceptaclesHardwire
Runtime Full Load (min.)  5 min. (36kW)
Runtime Half Load (min.)  14 min. (18kW)
Expandable RuntimeYes
External Battery Pack Compatibility   BP480V10 
DC System Voltage (VDC)+/- 240
Battery Recharge Rate (Included Batteries)9 hours to 90% (Internal batteries)
Voltage Regulation DescriptionOnline, double-conversion power conditioning maintains output within 1% of the selected nominal voltage in online mode
Front Panel LCD DisplayLCD DISPLAY: offers a variety of graphical, text and numeric information to indicate a wide range of UPS operation and fault / warning conditions, including current operating mode, alarm status, load level, battery charge, input / output voltage & frequency, estimated runtime and more (see user manual for a detailed listing)
SwitchesON / ENTER BUTTON: turns the UPS on and confirms a selection from the settings menu; OFF / ESC BUTTON: turns off the UPS and returns to the previous item in the settings menu; TEST / UP BUTTON: initiates UPS self-test operation and advances to the next item in the settings menu; MUTE / DOWN BUTTON: silences the audible alarm and advances to the previous item in the settings menu; Press TEST/UP & MUTE/DOWN buttons simultaneously for 1 second to enter or exit the settings menu (See user manual for detailed information)
Audible AlarmAlarms warn users of a variety of operational conditions: BYPASS MODE (beeps every 2 seconds), BATTERY MODE (beeps every 4 seconds), FAULT MODE (beeps continuously), OVERLOAD (beeps twice per second), OTHER WARNINGS (beeps once per second), FAULT (beeps continuously); All alarms can be silenced, except OVERLOAD & OTHER WARNINGS conditions
LED Indicators4 LEDs report BYPASS / LINE / BATTERY / FAULT modes
Primary Form FactorTower
Cooling MethodFans
Installation Form Factors Supported with Included AccessoriesTower
Primary UPS Depth (mm)815
Primary UPS Height (mm)1,000
Primary UPS Width (mm)300
Shipping Dimensions (hwd / in.)47.44 x 16.90 x 36.22
UPS Housing MaterialSteel
UPS Power Module Dimensions (Height x Width x Depth, mm)1000 x 300 x 815
UPS Power Module Dimensions (hwd, in.)39.37 x 11.81 x 32.08
UPS Power Module Weight (kg)315.70
UPS Power Module Weight (lbs.)696
Operating Temperature Range0 to +40C (32-104F)
Storage Temperature Range0 to +35C (32 to 95F) with battery; -15 to 60C (5 to +140F) without battery
Relative Humidity5 to 95%, non-condensing
Operating Elevation< 3280ft (Capacity de-rates by 1% for every 328ft over 3280ft )
Audible Noise<60dBA at 1meter
Network Monitoring Port DescriptionCard accessory slot supports network management interface or programmable I/O relay card options
Communications CableDB9/RS-232 cable included
Communications InterfaceDB9 Serial; EPO (emergency power off); Slot for SNMP/Web interface
Transfer Time  Zero transfer time Online to Battery, Inverter to Bypass 0ms (Synchronous), and Inverter to ECO mode < 10ms.
Low Voltage Transfer to Battery Power (Setpoint)120V (Ph-N), 208V (Ph-Ph) @50% load / 176V (Ph-N), 305V (Ph-Ph) @100% load
High Voltage Transfer to Battery Power (Setpoint)276V (Ph-N), 478V (Ph-Ph) @ 50% or 100% load.
Cold Start (Startup in Battery Mode During a Power Failure)Cold-start operation supported
High Availability UPS Features  Automatic inverter bypass; Manual bypass switch; Auto Probe Monitoring (requires WEBCARDLX); Zero transfer time; On-Line/Double-Conversion
Green Energy-Saving FeaturesHigh efficiency economy mode operation
Grounding DetailsYes
UPS ApplicationsMission Critical Applications
Product CertificationsIEC/EN 62040
Product ComplianceRoHS; CE (Europe); UKCA
Product Warranty Period (U.S. & Canada)2-year limited warranty
3-Phase Warranty StatementTripp Lite 3-Phase UPS Factory Warranty

Questions & Answers


UPS Battery Packs

  Model Number Description
External UPS Battery Pack, 80 10Ah Batteries Included - S3M40KX S3MX-Series 3-Phase UPS System BP480V10 BP480V10 External UPS Battery Pack, 80 10Ah Batteries Included - S3M40KX S3MX-Series 3-Phase UPS System

Network Interfaces and Sensors

  Model Number Description
Programmable RS-485 Management Accessory Card for Select 3-Phase UPS Systems MODBUSCARDSV MODBUSCARDSV Programmable RS-485 Management Accessory Card for Select 3-Phase UPS Systems
WEBCARDLXE Network Management Card for Select UPS Systems WEBCARDLXE WEBCARDLXE WEBCARDLXE Network Management Card for Select UPS Systems

Environmental Sensors

  Model Number Description
EnviroSense2 (E2) Environmental Sensor Module, Temperature E2MT E2MT EnviroSense2 (E2) Environmental Sensor Module, Temperature
EnviroSense2 (E2) Environmental Sensor Module with Temperature and Digital Outputs E2MTDO E2MTDO EnviroSense2 (E2) Environmental Sensor Module with Temperature and Digital Outputs

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email