The Norman Lamps 100A19/FR-277V is a 100W incandescent A19 traffic signal lamp engineered for high-voltage environments operating at 277V. Fitted with an E26 medium screw base, this lamp installs directly into standard medium-base sockets without adapters, making replacement fast and straightforward. The frosted glass finish diffuses light evenly in all directions, reducing harsh glare and providing a soft, uniform output across a full 360-degree viewing angle.

Built for demanding service conditions, this incandescent lamp features a heavy-duty CC-9 filament construction and rough service ratings that allow it to withstand vibration, mechanical stress, and the rigors of continuous-duty installations. The brass base adds corrosion resistance and promotes reliable electrical contact over the life of the lamp. These characteristics make the 100A19/FR-277V well suited for traffic signal housings, commercial and industrial facilities, stairwells, utility areas, and other locations served by 277V branch circuits.

The lamp carries an average rated life of 8,000 hours and is dimmable, providing compatibility with appropriate dimming controls for added flexibility in applications where light level adjustment is needed. At 4.10 inches in length and 2.38 inches in diameter, it conforms to standard A19 dimensional specifications. The 100A19/FR-277V is sold as a single unit and is available in case quantities of 60 for facilities and maintenance operations requiring ongoing stock.

• 100W incandescent A19 traffic signal lamp rated for 277V operation with an E26 medium screw base for easy installation
• Frosted glass finish provides soft, even light distribution across a full 360-degree viewing angle
• Heavy-duty CC-9 filament with rough service construction and brass base for reliable performance under vibration and continuous-duty conditions
• Rated for 8,000 life hours of average service life
• Dimmable design compatible with appropriate 277V dimming controls
• A19 form factor measures 4.10 in. long by 2.38 in. in diameter; available in full cases of 60

Tags: 100A, 100a19, 100ars, traffic signal