Halco S51/400CWA/4T/K HID Ballast 400W LU S51 4T Kit (55124)

Multi-voltage 4-tap electromagnetic ballast kit for one 400W LU400 high-pressure sodium lamp (ANSI S51), field-configurable for 120V, 208V, 240V, or 277V service. The constant-wattage autotransformer (CWA) circuit holds lamp output steady through line-voltage swings, making it a workhorse for parking lots, warehouses, and other large-area HPS fixtures.

Features

• Operates one 400W LU400 high-pressure sodium lamp
• ANSI code S51 lamp compatibility
• 4-tap multi-voltage input: 120V, 208V, 240V, and 277V
• 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