Overview
The Universal Lighting Technologies 446-L-SLH-TC-P is a magnetic ballast engineered for 120VAC 60Hz power systems. This rapid-start ballast operates two F40T12 fluorescent lamps and delivers stable lamp ignition without flicker while maintaining consistent current regulation. Although discontinued by the manufacturer, the 446-L-SLH-TC-P remains a sought-after replacement for legacy T12 lighting systems in commercial, industrial, and institutional facilities.
Key Features
- Rapid-Start Operation: Smooth lamp starting without flicker while maintaining stable current regulation throughout lamp operation
- Class P Thermal Protection: Class P insulated design that meets safety and thermal protection standards, ensuring long-term durability
- Two-Lamp Capacity: Operates 2 lamps (4 ft linear tubes and U-bend) F40T12, F40T12ES, F10T12
- Standard 120V Input: Designed for facilities with standard 120-volt 60 Hz electrical supply
- Low Heat Rise: Sound Rated: A, LOW HEAT rise, Therm-O-Matic
- Grounded Design: Ballast must be grounded
Technical Specifications
The ballast incorporates proven magnetic technology for reliable performance in standard fluorescent lighting applications. It meets ANSI standards for starting sequences and provides transient immunity as specified by ANSI C62.41-1991, Location Category A1. The unit tolerates sustained variations of ±5%–10% voltage without damage and provides short-circuit and open-circuit protection.
Typical Applications
- Commercial office and retail lighting systems
- Industrial facility illumination
- Institutional buildings (schools, hospitals, government offices)
- Retrofit and replacement in legacy T12 fixture installations
- Facilities requiring rapid-start fluorescent ballasts at standard 120V supply
Compatibility & Replacements
Compatible With
- F40T12 fluorescent lamps (two-lamp configuration)
- F40T12ES lamps
- F10T12 lamps
- 4-foot linear and U-bend fluorescent fixtures
- Standard 120VAC 60Hz electrical systems
Replaces / Drop-In Replacement For
- Universal 446-L-SLH-TC-P (original part)
- Universal 446-L-LH-TC-P
- Similar Universal Magnetek ballast models in the 446 series
- GE GEM240RS120IP ballasts with identical wiring and mounting
- Various other rapid-start 2-lamp 120V ballasts with matching pinout (verify with system integrator)
Works With
- Rapid-start T12 fluorescent fixtures from major manufacturers
- Standard 120VAC 60Hz facility power systems
- ANSI C82.1 compliant starting circuits
- Class P thermal protection systems
