IIS SZ Single-Phase Seismic Inverter

1.5kVA to 16.7kVA Single Phase systems for Seismic Applications


  • Overview
  • Specifications
The IOTA IIS SZ Single Phase Central Inverters are UL Listed single-phase sine wave output inverters designed to supply 1.5kVA to 16.7kVA emergency power to the connected load. IIS SZ Inverters will operate the emergency load at full brightness and are shaker-table tested to an SDS level of 2.5g in accordance with ICC-ES-AC-156 procedures.
Emergency Operation
  • 1.5kVA (1500W) to 16.7kVA (16700W)
  • Operates LED, Fluorescent, Incandescent
  • 120VAC to 347VAC Input/Output Voltage options
Product Advantages
  • Single-phase emergency system with exceptional 98% power efficiency
  • Shaker Table Tested to an SDS level of 2.5g to meet rigid industry seismic specifications
  • Fast Transfer (2 milliseconds) or Standard Transfer (50 millisecond) options
  • 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 Fuse Protection
  • Output Circuit Breaker options available
  • User Programmable / Password Protected Interface
  • High-contrast VFD 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
Voltage Rating 120, 208, 240, 277, 347
Frequency 60HZ
Load Voltage Rating 120VAC, 208VAC, 240VAC, 277VAC, 347VAC
Output Power 10000 VA, 12500 VA, 1500 VA, 16700 VA, 2250 VA, 3000 VA, 3750 VA, 5000 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, UL924
Compliance Listing ROHS
Series IIS

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  • Suggested Replacement Products


  • Spec Sheets

    Document Type Document Title Description Updated View
    SPEC SHEET IIS SZ Spec Sheet.pdf IOTA IIS SZ Single-Phase Seismic Inverter Specification Sheet 8/3/2023 View
  • Photometry & Revit (BIM)

  • Spectral Data Sheets

  • Guideline Specifications

  • Revit Component Files (Non-Illuminated)

    Document Type Document Title Description Updated View
    BIM Models IIS SZ Single-Phase Seismic Inverter.rfa IIS SZ Single Phase Central Inverter - OSHPD Seismic 12/16/2021
  • Technical Documents (e.g. Instruction Sheets, MSDS, CAD)

    Document Type Document Title Description Updated View
    Installation Instructions IOTA-IIS-1.5kW-to-16.7kW-Fast-Transfer-Inverter_User-Guide.pdf User Guide for Fast Transfer (FT) Single Phase IIS Inverter Models 12/28/2021 View
    Installation Instructions IOTA-IIS-1.5kW-to-16.7kW-Inverter_Installation-Manual.pdf Installation Instructions for IOTA IIS Single-Phase Central Inverters 12/28/2021 View
    Installation Instructions IOTA-IIS-1.5kW-to-16.7kW-Standard-Transfer-Inverter_User-Guide.pdf User Guide for Single-Phase IIS Central Inverters with Standard Transfer Time 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 System Electrolyte & kWh Levels Electrolyte & kWh levels for IOTA Central Inverters 6/2/2021 View
  • Utility Rebate Search

  • Replacement Parts

  • Confidential Documents

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

    Document Type Document Title Description Updated View
    Application Guide IIS-Central-Inverter-Quotation-Request-Checklist.pdf Easy Reference Checklist for submitting an IIS Central Inverter quotation request. 8/3/2023 View
    Application Guide Tech Brief - Double Conversion and Lighting Learn About Double Conversion Inverter Systems and Whether They Are Ideal for Emergency Lighting 5/9/2022 View
    Brochures Factory Startup, Training, and Maintenance Plans Expert Installation, On Site Training, and Preventative Maintenance Plans for IIS Central Inverters 6/6/2023 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 5/16/2023 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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