The Norman Lamps 75A19/FR-277V is a 75W A19 incandescent light bulb engineered specifically for 277V commercial and industrial circuits. Designed with a frosted inside finish, this incandescent lamp diffuses light evenly to minimize glare and reduce hot spots, delivering soft, comfortable illumination well suited to warehouses, stairwells, hallways, parking structures, and other facilities operating on high-voltage systems.

Built for demanding environments, this A19 incandescent features rough service construction with a reinforced multi-filament design that resists vibration, shock, and frequent on/off cycling. The durable brass base provides a secure, corrosion-resistant connection in the standard E26 medium screw socket, helping extend fixture life and simplify replacement in commercial maintenance applications.

With a classic A19 lamp shape measuring 4.10 inches in length and 2.38 inches in diameter, this incandescent bulb drops into virtually any standard medium-base fixture wired for 277V service. The lamp is fully dimmable on compatible 277V dimming controls, offers a 2,500 average life hours rating, and is sold individually with 60 pieces per full case for streamlined bulk ordering by facility managers and electrical contractors.

• 75W A19 incandescent light bulb rated for 277V high-voltage commercial and industrial circuits
• Inside frosted glass finish diffuses light evenly to reduce glare and soften shadows
• Rough service construction with reinforced filament supports resists vibration and impact
• Durable brass medium screw base (E26) resists corrosion for secure, long-lasting connections
• Fully dimmable incandescent lamp with 2,500 average life hours
• Compact A19 shape at 4.10 in. length and 2.38 in. diameter fits standard medium-base fixtures

Tags: 75a19/fr-277v, (277v)