Sylvania QHE2x39-24T5HOUNVPSN-NL – ProStart Universal Voltage T5HO Electronic Ballast | 120-277V | 2-Lamp Programmed Start | Class A Sound

Programmed rapid start for extended lamp life with universal 120-277V input – a high-efficiency electronic ballast for 1-2 T5HO lamps (F35T5, FP39/HO, F21T5), featuring Class A sound rating and normal ballast factor for commercial lighting applications.

Quick Specs

• Brand: Sylvania (OSRAM)
• Model: QHE2x39-24T5HOUNVPSN-NL
• Ballast Type: Electronic – Programmed Rapid Start (ProStart)
• Input Voltage: 120-277V AC ±10%, 50/60Hz
• Lamp Compatibility: 1-2 x F35T5, 1-2 x FP39/35W/HO/SS, 1-2 x F21T5, 1-2 x FP24/21W/HO/SS
• Ballast Factor: Normal
• Total Harmonic Distortion (THD): <10%
• Sound Rating: Class A (20-24 dB) – quietest rating
• Minimum Starting Temperature: -18°C (0°F)
• Dimensions (L x W x H): 14.17" x 1.18" x 0.87" (360 x 30 x 22 mm)

Product Overview

The Sylvania QHE2x39-24T5HOUNVPSN-NL is a ProStart universal voltage electronic ballast designed for 1-2 T5HO fluorescent lamps. Operating on 120-277V, it features programmed rapid start technology that preheats cathodes before ignition, significantly extending lamp life in frequently switched applications such as offices, schools, and retail spaces.

With a normal ballast factor, this ballast delivers rated lamp lumens for optimal light output. The Class A sound rating ensures virtually silent operation, while low THD (<10%) meets strict harmonic distortion requirements. The ballast is capable of starting lamps at temperatures as low as -18°C (0°F).

Why Choose This Product

• Programmed rapid start (ProStart): Extends lamp life by up to 50% compared to instant start – ideal for areas with frequent switching (offices, classrooms, restrooms).
• Universal voltage 120-277V: One ballast works for both 120V and 277V applications – reduces inventory complexity.
• Class A sound rating: Silent operation – perfect for noise‑sensitive environments like hospitals, libraries, and executive offices.
• Low THD (<10%): Minimizes harmonic distortion, ensuring compliance with IEEE 519 and utility requirements.
• Wide lamp compatibility: Supports 2-lamp F35T5, FP39/HO, F21T5, and FP24/HO – versatile for various fixture types.
• Cold weather starting: Reliable ignition down to -18°C (0°F) for unheated spaces or outdoor-rated fixtures.
• Compact design: Small footprint (14.17″L x 1.18″W x 0.87″H) fits easily into tight fixture housings.

Technical Specifications

Dimensions

Applications

• Commercial lighting – offices, conference rooms, retail displays
• Educational facilities – classrooms, lecture halls, laboratories
• Healthcare – hospitals, clinics, examination rooms
• Industrial – clean rooms, manufacturing, assembly lines
• Architectural accent lighting – coves, wall washes, display cases

Compatibility & Replacement

Fixture type: Designed for T5HO linear and FP series lamps in 1 or 2-lamp configurations. Compatible with F35T5, FP39/35W/HO/SS, F21T5, and FP24/21W/HO/SS.

Ballast factor: Normal (≈1.0) – delivers full lamp lumens.

Before ordering, confirm:

• Lamp type and quantity match ballast rating (1-2 T5HO lamps, 24-39W).
• Input voltage is 120-277V ±10%.
• Fixture has adequate space for dimensions: 14.17" L x 1.18" W x 0.87" H.
• Ambient temperature is above -18°C (0°F) for reliable starting.
• Ballast is compatible with existing control systems (non-dimming).

Ordering Information

• Brand: Sylvania (OSRAM)
• Model: QHE2x39-24T5HOUNVPSN-NL
• Description: 2-lamp T5HO programmed start universal voltage electronic ballast, normal ballast factor, Class A sound
• Case quantities and bulk pricing available – contact ADL Supply for volume orders.

Compliance & Certifications

• UL Type certified – Class P, Type 1 Outdoor
• ANSI C82.11 compliant
• FCC Part 18 (Non-Consumer) for EMI/RFI
• CSA certified
• RoHS compliant (no PCBs)
• Meets NEMA Premium Ballast requirements

ADL Supply recommends confirming all applicable compliance data with the Sylvania official product data sheet prior to specification or installation.

Safety & Installation Notes

• Disconnect power before installing or servicing.
• Ground ballast case in accordance with national and local electrical codes.
• Use only with approved T5HO lamps and fixtures.
• Follow wiring diagram printed on ballast label.
• Do not exceed maximum case temperature (consult spec sheet).
• Minimum starting temperature: -18°C (0°F).
• For use with electronic ballasts only – do not use with magnetic ballasts or in series with other ballasts.
• Follow fixture manufacturer's instructions and local electrical codes for installation.