OSRAM SYLVANIA QTP4x32T8/UNV-ISN-SC (49947) 4 Lamp T8 Fluorescent Ballast: What are the Pros and Cons?

The OSRAM SYLVANIA QTP4x32T8/UNV-ISN-SC (49947) is a versatile 4-lamp T8 fluorescent ballast designed for instant start operation on universal voltage (120-277V) systems. This electronic ballast is compatible with F32T8, F30T8, F28T8, and F25T8 lamps, making it a popular choice for various lighting applications. Let’s explore the pros and cons of this ballast to help you determine if it’s the right fit for your needs.

Pros

Operates on universal voltage (120-277V), providing flexibility in installation
Instant start feature for quick lamp ignition
Compatible with multiple T8 lamp sizes, including F32T8, F30T8, F28T8, and F25T8
Compact size (9.5″ L x 1.68″ W x 1.18″ H) for easy installation in tight spaces
UL listed for safety and reliability
Lamp Striation Control (LSC) technology for improved lamp performance
30-40% energy savings compared to magnetic ballasts

Cons

Not dimmable, limiting its use in applications requiring dimming capabilities
Minimum starting temperature of -20°F (-29°C) may not be suitable for extremely cold environments
Maximum case temperature of 158°F (70°C) requires proper ventilation and heat dissipation
Sound rated as “A,” which may be audible in quiet environments

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