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Home / Emergency Lighting Inverters / HE UPS

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UL924 Harsh Environment UPS System with NEMA 3R Enclosure with 2.1kW, 3kW, 5kW, 6kW, 8kW, 10kW, 12.5kW, 15kW and 17kW power capacity

Harsh Environment

Single Phase, 2.1k to 17kW

Standard Features

  • 90 Minutes Backup Power at Full Load
  • Listed to UL924 and 1778 Standards
  • True Online Double Conversion Technology with Zero Transfer Time
  • Pure Sinusoidal Waveform
  • High Frequency Pulse Width Modulation (PWM) for Conditioned Power to the Load
  • TVSS Input Transient Voltage Surge Suppressor (Class C)
  • Tamperproof Triple-Lock Design includes Internal Steel Bars, Keylock and Padlocking Door Handle
  • Standard Steel Enclosure with Filtered Ventilation
  • Conformal Coated Electronics
  • Input Power Factor Correction and Full Voltage Regulation
  • Multiple Output Voltages
  • Self-Testing/Battery Exerciser
  • DC Breakers for Ease of Maintenance

Applicable Safety Standards

UL 924, UL 1778, NFPA 101, NFPA 70, NEC, OSHA

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Data Sheet

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Technical Specs

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Technical Specs (Word)

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Technical Drawings

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User Manual

Harsh Environment Inverter Solution

If you need reliable power protection for indoor/outdoor applications without an environmentally controlled room, look no further than the UL924 Harsh Environment UPS! The HE UPS is an indoor and outdoor lighting inverter that is outfitted with the highest quality conformal coated electronics, filtered ventilation, and a robust NEMA 3R steel enclosure - designed to withstand even the toughest industrial conditions.


Hospitals, Public Facilities, Schools, University, Government Building, Cruise and Cargo Ship, Banks and Libraries.

Lighting Compatibility

Compatible with Self-Ballast Fluorescent, Incandescent, Halogen, Quartz Re-strike, HID, HPS and LED.

Safety Approvals

Meets and conforms to UL924, UL1778, NFPA 101, NFPA 70, NEC, and OSHA standards.

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Single Phase

Outdoor Rated Enclosure

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90 Minutes

Backup Power at Full Load

2.1kW, 3kW, 5kW, 8kW, 10kW, 12.5kW, 15kW, 17kW emergency lighting inverter power capacity

2.1 to 17kW

Power Capacity

harsh environment ups NEMA 3R cabinet enclosure for UPS system


Outdoor Rated Enclosure



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Since 1975, Online Power has been committed to providing the best power protection products and services in the industry. Our extensive line of power protection equipment includes everything from fire alarm backup to voltage regulation, and our lighting inverters are some of the most reliable on the market. We also produce many other power protection solutions, including power conditioning, distribution, and more. With a commitment to quality and customer satisfaction that's unparalleled in the industry, Online Power is your best bet for reliable power protection products.



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