top banner
   IIS-50-I UNIT INVERTER Specification Sheet in PDF format Installation Manual in PDF format Wiring Diagrams
IOTA IIS-50-I Inverter Emergency Output
50 Watts

Lamps Operated

Product Description

The IOTA IIS-50-I is a UL Listed sine wave output inverter designed to provide power to the designated emergency lighting fixture. In a power loss situation, the IOTA IIS-50-I will supply 120 or 277 Vac power to operate up to a 50W total connected load for not less than 90 minutes. The IOTA IIS-50-I works in conjunction with LED, fluorescent, and incandescent lamp and fixture types and will automatically run switched, normally-on, or normally-off designated emergency fixtures. The IIS-50-I is ideal for applications requiring an emergency source in elevated ceilings, for high output luminaires, and lamp types utilizing Edison screw (ES) designs. The IIS-50-I features a replaceable long-life nickel-cadmium battery and is covered under IOTA's five-year warranty.

Product Specifications

Input Voltage

Dual 120/277, 60Hz)
60 Watts (Bulk Charge)

Output Voltage
(Slide switch selectable) 120/277VAC, 60Hz

Output Power 50 Watts (@ 0.9 leading to 0.9 lagging PF)

Lamps Operated LED (per NEMA 410), Fluorescent, Incandescent

Emergency Operation 90 minutes

Load Power Factor Range 0.9 leading to 0.9 lagging

Operating Temp 0° to 50° C

Battery Hi-temp rechargeable, replaceable nickel-cadmium

9 lbs


UL 924 Listed for US and Canada
CSA C22 No. 141 Unit Equipment for Emergency Lighting
Damp Location Rated
RoHS Compliant

  • UL and cUL Listed, CSA Certified

  • Pure sine wave output

  • Operates LED, incandescent, and fluorescent fixtures, fixtures with dimmable ballasts, and screw-base lamp types

  • For use with switched or unswitched fixtures

  • Dual voltage 120/277 Vac 60Hz input with 120/277 Vac 60Hz slide switch selectable output

  • Includes test switch and charge indicator accessory kit

  • Replaceable and recyclable long-life high temperature nickel-cadmium battery

  • Line voltage allows for remote mounting of emergency fixtures at distances up to 250 feet

  • Low Battery Voltage Disconnect

  • Rated for use in damp locations

  • Meets or exceeds all National Electrical Code and Life Safety Code Emergency Lighting Requirements

  • Galvanized steel enclosure with 36" conduit for wiring connections to the fixture

  • Durable 16-gauge steel housing design with white semi-gloss powder coat paint finish

  • RoHS Compliant

  • Five-Year Warranty

Emergency Lighting shall be provided by micro-inverter equipment designed to operate a designated incandescent, fluorescent or LED fixture on emergency power at the full nominal lumen rating during the full 90-minute emergency discharge cycle. System output will be rated at 50 watts for 90 minutes. The system's voltage rating shall be field selectable 120 or 277 Vac input and 120 or 277 Vac selectable output via two-position slide switch.

The micro-inverter unit shall allow for the connected emergency fixture to be normally on, normally off, switched or dimmed without affecting lamp operation during a power failure. Upon utility power loss, the micro-inverter unit shall deliver 100% of its full rated output regardless of the local switch or dimmer position, and will provide power to the emergency fixture at distances of up to 250 feet.

The housing shall be designed for installation onto or adjacent to the fixture and manufactured using a galvanized steel enclosure.

The unit's electronics shall include inverter circuitry with a fully automatic battery charging circuit, low battery voltage disconnect, short circuit and brownout protection as standard. The unit shall utilize a rechargeable and replaceable high-temperature nickel-cadmium battery with a 10-year design life. The inverter system shall be UL 924 Listed and labeled for use in the United States and Canada. The unit shall be covered under a full 5-year warranty on the electronics and battery. It shall meet or exceed the requirements of UL 924, NFPA 101 Life Safety Code, NFPA 70 National Electrical Code, NEMA 410, OSHA and State and Local codes.

The micro-inverter unit shall be IOTA model IIS-50-I.
Click to Open

IOTA Links

Home Page

LED Emergency Drivers

IIS Series Inverters

Fluorescent Emergency Ballasts

Exit Signs and Emergency Fixtures

Emergency Controls and Accessories

What's New

Product Links

IIS Inverter Product Guide

IIS Interruptible Unit Inverters

IIS Uninterruptible Unit Inverters

Inverter Technical Library

Contact IOTA

IOTA Directory

Request Literature

Find Your Local IOTA Sales Representative

Technical Services Page

T: 1-800-866-4682  •  F: (520) 741-2837  •  PO Box 11846 Tucson, AZ  •  1361 E. Wieding Road Tucson, AZ 85706

© 2018 IOTA Engineering, L.L.C. All Rights Reserved.   Privacy Policy   Contact Us