Overview
The Advance 71A5790 lamp ballast is a 250W metal halide autotransformer ballast kit designed for industrial and commercial lighting applications. This unit supports both M58 and H37 lamp types and features multi-tap voltage compatibility, making it suitable for various electrical installations. Although discontinued by the manufacturer, the 71A5790 remains a sought-after replacement component for legacy lighting systems and can be cross-referenced with equivalent models from competing manufacturers.
Key Features
- 250W Power Rating: Designed specifically for high-output 250W metal halide lamps.
- Multi-Tap Input Voltage: Compatible with 120V, 208V, 240V, and 277V operation at 60Hz.
- Autotransformer Core & Coil Design: Provides efficient voltage regulation and lamp ignition support.
- High Capacitance Rating: Includes 15MFD 400V capacitor for power factor correction and circuit stability.
- Complete Kit Configuration: Ballast assembly supplied with integrated capacitor for rapid installation.
- Industrial Duty: Built for warehouses, manufacturing facilities, and other high-demand lighting environments.
Technical Specifications
- Lamp Type: 250W Metal Halide (M58, H37 ANSI codes)
- Ballast Type: Autotransformer Magnetic (CW)
- Input Voltage Options: 120V / 208V / 240V / 277V, 60Hz
- Rated Current (by tap): 2.50A @ 120V / 1.45A @ 208V / 1.25A @ 240V / 1.10A @ 277V
- Capacitor: 15MFD, 400VDC
- Open Circuit Voltage: 300VDC (typical)
- Power Factor: Magnetic ballast design (standard HID efficiency)
- Frequency: 60Hz
- Status: Discontinued by manufacturer
Typical Applications
The Advance 71A5790 ballast is commonly used in:
- Warehouse and industrial facility lighting systems
- Manufacturing plant high-bay illumination
- Outdoor security and perimeter lighting
- Sports facility and gymnasium lighting
- Retrofit and replacement installations for existing 250W metal halide fixtures
- Legacy system maintenance and equipment repairs
Compatibility & Replacements
Compatible With
- 250W metal halide lamp fixtures designed for M58 or H37 ANSI codes
- Industrial and commercial lighting systems operating at 120V, 208V, 240V, or 277V single-phase AC
- Standard magnetic ballast sockets and mounting configurations
- Lighting systems requiring 60Hz operation
Replaces / Drop-In Replacement For
The Advance 71A5790 directly replaces legacy 250W autotransformer ballast units in identical fixture housings. Verify fixture compatibility and mounting dimensions before installation. The 71A5790 may also substitute for ballasts requiring equivalent 250W M58/H37 output ratings, provided electrical ratings match the installation’s voltage and current requirements.
Works With
- M58 and H37 metal halide lamp sockets (250W)
- Standard capacitor banks and power distribution systems
- Three-phase or single-phase facility electrical infrastructure
- Photoelectric control systems and lighting automation controllers
- Standard ballast mounting brackets and hardware
