Products  Hazardous Location Strobes  490S Strobe  

Product Brochures
Industrial Products Catalog
Emergency Products Catalog
Optical Traffic Preemption
Product Documentation
490S Strobe
   Product Information

490S-120T Installation

490S-1280T Installation

490S Application Guide
UL Listing Card
Technical Reference
Understanding light intensity
   specifications for flashing
   signal lights

Effective Candlepower (ECP)
   vs. Peak Candlepower

NEC Classifications
NEMA Ratings
Language Translator
You will need the Adobe® Acrobat® Reader to view the documentation on our web site.
490S Strobe
Hazardous Location Strobe

Model 490S-T hazardous location strobes are UL listed for use in Class I and II, Division 2 locations. This model is available in either 12-80 VDC or 120 VAC configurations. The 490S-T features a hermetically O-ring sealed Lexan lens, and polyurethane potted power supply for complete protection from moisture. This unit is UL NEMA 4X rated, and may be operated in any position. The high efficiency, solid state power supply is polarity-protected and utilizes built-in filters to guard against radio interference and spike voltages.

These warning lights are ideally suited for installations in chemical and petrochemical processing facilities, sewage treatment plants, off-shore and dockside installations, as well as agricultural, commercial, industrial, mining and marine facilities.

Available Colors


  • Class I, Div. 2 Groups A, B, C, & D
  • Class II, Div 2 Groups F & G
  • Class III
  • Lens has hermetic O-ring seal
  • Available in amber, blue, clear, green, red, and purple
  • Solid state circuitry
  • Potted power supply
  • 10 year warranty on power supply
  • UL listed
  • NEMA 4X

490S Models

Model Description Voltage
490S–1280T Hazardous location strobe 12 – 80VDC
490S–120 Hazardous location strobe 120VAC


Item Description
Lamp Type 5001 Xenon strobe lamp
Lens Type 470S–L–Color ( please specify lens color )
Voltage and Amperage 12–80VDC draws 0.4A average @ 12VDC draws tapering to 0.05A average @ 80VDC
16–24VAC draws 0.35A average
120VAC draws 0.04A average
Temperature Code Class I T2B 260° C
Do not install where the operating temperature exceeds the ignition temperature of the hazardous atmosphere.
Power Supply Output 2.7 Watts 2.3 joules per flash
Flash Rate 60 to 80 flashes per minute
Size and Weight 5” tall x 3” dia. x 0.6 lbs ( 127mm x 76mm x 0.27kg )

Architect and Engineer Specifications

Hazardous Location visual signaling beacon shall be Tomar model number series 490S-1280T, 490S-120T or approved equal. The beacon shall be UL Listed Class I, Division II, Groups A,B,C, and D; Class II, Division II, Groups F and G; and Class III for use in specified hazardous locations as classified by the National Electric Code. The light source shall be a plug-in field replaceable single-flash xenon strobe lamp. The warning signal must have built-in RFI filters to protect against radio interference and spike voltages. It shall be polarity protected, and have a power supply fully potted in polyurethane. Voltage ranges shall be 12-80VDC or 120 VAC. The warning light shall be rated NEMA 4X and have a screw-on Lexan® lens.