Product Overview
Philips Advance AmbiStar RELB-2S40-N Ballast – 2 Lamp T12 | 120V | Rapid Start | 0.85 BF Electronic
Energy-efficient electronic ballast designed to replace magnetic T12 ballasts while delivering extended lamp life and quiet, flicker-free performance.
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Lamp Type
T12 / T10
Fluorescent
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Lamp Count
1–2 Lamps
Parallel Operation
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Voltage
120V
60Hz
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Technology
Electronic
High Efficiency
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Start Type
Rapid Start
Extended Lamp Life
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Compatible Lamps
- (1-2) F40T12 48"
- (1-2) F34T12 48"
- (1-2) F30T12 36"
- (1-2) F40T10 48"
- (2) 40W T12 U-Bend Lamps
Product Overview
The Philips Advance AmbiStar RELB-2S40-N is a 120V electronic rapid start ballast designed to replace older magnetic T12 ballasts with improved energy efficiency and performance.
With a 0.85 ballast factor, it provides balanced light output while reducing energy consumption compared to traditional magnetic systems.
Rapid start technology preheats lamp electrodes before ignition, extending lamp life and making it ideal for applications with frequent switching.
Key Features
- Electronic ballast replaces magnetic T12 systems
- Rapid start technology extends lamp life
- 0.85 ballast factor for balanced efficiency and output
- Quiet high-frequency operation (no flicker or hum)
- Lightweight, low-profile design
- Improved energy efficiency vs magnetic ballast
Technical Specifications
- Input Voltage: 120V AC, 60Hz
- Lamp Type: T12 / T10
- Lamp Count: 1–2
- Ballast Factor: 0.85
- Start Method: Rapid Start
- Dimensions: 9.5" L x 1.3" W x 1.0" H
- Compliance: UL, FCC Part 18, RoHS
Applications
- Office and commercial lighting
- Retail and institutional buildings
- Maintenance upgrades from magnetic ballasts
- Fixtures with frequent switching cycles
Important Notes
- Designed for T12 lamps only
- Not compatible with T8 lamps
- Electronic ballast – lighter and more efficient than magnetic models
- Ideal for use with occupancy sensors or frequent switching
