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IIS3P Three-Phase Central Inverters

4.8kVA to 50kVA Three Phase Inverter Systems


  • Overview
  • Specifications
The IOTA IIS3P Series Central Inverter Systems are UL Listed three-phase sine wave output inverters designed to supply 4.8kVA to 50kVA of emergency power to the connected load. IIS3P Inverters will operate the emergency load at full brightness with a transfer speed of 2 milliseconds.
Emergency Operation
  • 4.8kVA to 50kVA
  • Operates all lighting load types
  • 120VAC to 480AC Input/Output Voltage options
Product Advantages
  • Three-phase emergency system with exceptional 98% power efficiency
  • Fast Transfer (2 milliseconds) speed allows for uninterrupted operation of all lighting loads
  • Provides full light output in the emergency mode
  • Conducts required monthly and annual testing
  • UL 924 Listed
  • PWM/IGBT inverter design for optimal switching speed
  • Micro-processor controlled, temperature-compensating charger
  • Sealed long-life maintenance-free VRLA batteries
  • Low Battery Voltage Disconnect protects the batteries against deep discharge
  • Includes Input Circuit Breaker and Battery Circuit Breaker (24.0kVA and above) or Fuse (4.8kVA to 16.7kVA) Protection
  • Output Circuit Breaker options available
  • User Programmable / Password Protected Interface
  • High-contrast LCD display screen
  • Includes RS232 Serial Communications port
  • Durable steel cabinet design with white finish
  • Forced air cooling only while in the emergency mode with no filter requirement
  • Meets or exceeds all NEC and Life Safety Code Emergency Lighting requirements
  • Covered by IOTA's standard 1-year warranty
  • Factory Startup and Training available
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Product Type Emergency Inverter
Frequency 60HZ
Output Power 10000 VA, 12500 VA, 16700 VA, 24000 VA, 33000 VA, 40000 VA, 4800 VA, 50000 VA, 6000 VA, 8000 VA
Max. Operating Temp. 30
Min. Operating Temp. 20
Battery Run Time 90 min
Battery Chemistry Type Lead Acid
Life Safety Testing Self Diagnostics, Self Test
Regulatory Listing UL
Series IIS3P
  • Suggested Replacement Products

Product Information

  • Spec Sheets

    Document Type Document Title Description Updated View
    SPEC SHEET IIS3P Spec Sheet IIS3P Three-Phase Inverter Specification Sheet 6/2/2022 View
  • Technical Documents (e.g. Instruction Sheets, MSDS, CAD)

    Document Type Document Title Description Updated View
    Installation Instructions IOTA IIS3P 2400 to 50000 Users Manual Users Manual for IIS3P 3-phase large inverters (24kVA to 50kVA) 12/28/2021 View
    Installation Instructions IOTA IIS3P 2400W to 50000W Installation Manual Installation Instruction Manual for IIS3P 3-phase large inverters (24kVA to 50kVA) 12/28/2021 View
    Installation Instructions IOTA IIS3P 4800 to 16700 User Manual User Guide for IIS3P 3-Phase Large Inverters (4.8kVA to 16.7kVA) 12/28/2021 View
    Installation Instructions IOTA IIS3P 4800W to 16700W Installation Manual Installation Instructions for IIS3P 3-Phase Central Inverters (4.8kVA to 16.7kVA) 12/28/2021 View
    Material Safety Data Sheet MSDS - VRLA Batteries Material Safety Data Sheet for the VRLA Batteries 5/13/2021 View
    Technical Bulletins BTU Loss BTU Loss for IOTA Central Inverter Systems 6/2/2021 View
    Technical Bulletins IIS Central Inverters for 2-Hour Operation Select the IOTA IIS Central Inverter system to meet your 120-minute application 6/2/2022 View
    Technical Bulletins IOTA Contractor Insider_Extending-Runtimes.pdf IOTA offers different ways to achieve extended runtimes for 120-minute emergency applications 7/23/2021 View
    Technical Bulletins System Electrolyte & kWh Levels Electrolyte & kWh levels for IOTA Central Inverters 6/2/2021 View
  • BIM Models (Revit)

    Document Type Document Title Description Updated View
    BIM Models IIS3P Three-Phase Central Inverter.rfa IIS3P Three Phase Central Inverter 12/16/2021
  • Utility Rebate Search

  • Replacement Parts

  • Confidential Documents

  • Marketing Material (e.g. Brochures, Sell Sheets, FAQs, )

    Document Type Document Title Description Updated View
    Application Guide Emergency Lighting Solutions for 347-480 VAC Know all of your options for providing emergency lighting to applications using 347-480VAC power. 1/13/2022 View
    Brochures Factory Startup, Training, and Maintenance Plans Expert Installation, On Site Training, and Preventative Maintenance Plans for IIS Central Inverters 5/5/2022 View
    Brochures IIS Inverter Control Panel Overview Overview of the operational functions and data access of the IIS Central Inverter control panel. 11/4/2021 View
    Brochures IOTA IIS Central Inverter Product Brochure A quick-reference resource for IOTA's IIS Central Inverter products. 5/2/2022 View
    Catalogs IIS Central Inverter Options Reference Guide Explore the available options for IIS Central Inverters to fit your emergency egress application 5/5/2022 View
  • Need Product Assistance? (e.g. How to Buy, Technical Support, Warranty)

    How to Buy

    The IOTA products are primarily sold through a network of agents and distributors across North America.

    •  Find an Agent or Distributor

    •  Request a Call

    Technical Support

    The IOTA technical team is dedicated to providing outstanding product support. Please click on the appropriate link below,
    or feel free to call us at 855.363.9527.

    •  FAQs

    •  Technical Library

    •  Email Us


    Please click on the appropriate link below to learn more about IOTA terms & conditions and product warranty options. 

    •  IOTA Emergency Products with Batteries

    •  IOTA Emergency Control (ALCR) Devices

    •  IOTA DLS Battery Chargers and Power Converters

    •  IOTA Warranty Replacements & Stock Returns


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