Halco S51/400CWA/5T/K HID Ballast 400W LU S51 5T Kit (55126)

Five-tap electromagnetic ballast kit for one 400W LU400 high-pressure sodium lamp (ANSI S51), rated across 120V, 208V, 240V, and 277V line inputs with an additional tap for expanded service compatibility. The constant-wattage autotransformer (CWA) circuit stabilizes lamp output through line-voltage variation, making the kit a fit for large-area HPS installations that see swings on incoming service.

Features

• Operates one 400W LU400 high-pressure sodium lamp
• ANSI code S51 lamp compatibility
• 5-tap wiring rated for 120V, 208V, 240V, and 277V input
• Constant-wattage autotransformer (CWA) circuit for line-voltage regulation
• Electromagnetic (magnetic-core) construction

Ideal For: HPS parking lot and area lighting • Warehouse and industrial highbays • Roadway and security fixtures • Line-voltage-variable installations • Contractor stock ballasts