Sylvania 49971 - QHE4X32T8/UNV-ISN-SC-B

The Sylvania Quicktronic QHE4x32T8ISN-SC 120/277V is a high-efficiency electronic fluorescent ballast engineered for commercial and industrial T8 fluorescent fixture retrofits and new construction requiring universal dual-voltage 120/277V operation with ANSI C82.11 compliance. Operating 3 to 4 lamps across the full F32T8 family at a 0.88 normal ballast factor with parallel circuit wiring, less than 10% THD, and Class A sound rating, this Quicktronic unit meets NEMA Premium Electronic M Ballast Program requirements and qualifies for utility energy incentive programs in the most stringent energy code jurisdictions.

ADL Supply Expert Application & Replacement Guide

The Sylvania QHE4x32T8ISN-SC operates on a parallel lamp circuit, meaning individual lamp failure does not extinguish remaining lamps in the fixture — this is the correct specification for office, retail, and industrial applications where maintaining partial illumination during a lamp outage is an operational requirement, and it distinguishes this unit from series-wired ballasts where one failed lamp kills the entire fixture. Instant start ignition applies full strike voltage across the lamp pins without a preheat cycle, which maximizes energy efficiency and eliminates the preheat delay but does accelerate cathode wear on each start — for fixtures in occupancy-sensor or frequent switching applications exceeding 5 to 7 switch cycles per day, a programmed rapid start (PROStart) ballast should be specified instead to preserve lamp life. The 0.88 normal ballast factor operates lamps at 88% of rated lumen output, producing a measured reduction in system wattage versus a 1.0 BF unit — contractors specifying this ballast for energy code compliance should confirm the 0.88 lumen output meets maintained footcandle targets at the design mounting height before substituting it for a higher-BF ballast in an existing photometric layout. Remote mounting capability up to 20 feet and the compact 9.47" × 1.69" × 1.18" small can enclosure make this ballast compatible with tight plenum and wireway installations common in retrofit work; the integrated Lamp Striation Control (LSC) circuit mitigates the visible banding that frequently appears in T8 energy-saving lamps driven by standard electronic ballasts without this feature, which is a particularly common field complaint in 25W and 28W reduced-wattage T8 sources operating in colder ambient conditions.

Detailed Product Specifications

• Brand: Osram Sylvania
• Series: Quicktronic High Efficiency (QHE)
• Model Number: QHE4x32T8ISN-SC
• Ballast Type: Electronic Fluorescent — Instant Start
• Compatible Lamp Types: (3–4) F32T8, FO17, FO25, FO32/25W, FO32/28W, FBO16, FBO24, FBO29/SS, FBO30/SS, FBO31, FBO32; (4) FO30/SS; (3) FO40 60 in.
• Lamp Count: 3–4 lamps
• Ballast Factor: 0.88 (Normal)
• Input Voltage: 120/277V dual voltage (universal input)
• Input Frequency: 50/60 Hz
• Circuit Type: Parallel
• Total Harmonic Distortion (THD): <10%
• Sound Rating: Class A
• Maximum Case Temperature: 70°C (158°F)
• Minimum Starting Temperature (standard lamps): -20°F / -29°C
• Minimum Starting Temperature (SS / Supersaver lamps): 60°F / 16°C
• Remote Mounting Distance: Up to 20 feet
• Enclosure Dimensions: 9.47" L × 1.69" W × 1.18" H (Small Can)
• Lamp Striation Control (LSC): Yes — minimizes or eliminates lamp striations in T8 energy-saving lamps
• PCB Content: None (No Polychlorinated Biphenyl)

Operation, Safety & Mounting Compliance

Wiring & Installation

This is a dual-voltage instant start ballast — confirm input voltage at the fixture branch circuit (120V or 277V) before wiring; the ballast auto-selects voltage within the rated range, but connecting to voltages outside the 120–277V specification will damage the unit and void the listing. Instant start circuit topology requires lampholders to be shunted (shorted) per the ballast wiring diagram printed on the physical case — failure to short unused lampholders in 3-lamp applications will prevent the circuit from striking. Ground the ballast case to the fixture chassis per NEC requirements; an ungrounded ballast case is a code violation and a shock hazard in the event of an internal fault.

Electrical Standards & Transient Protection

This ballast complies with FCC 47 CFR Part 18 Non-Consumer standards for electromagnetic interference and incorporates ANSI 62.41 Cat. A transient protection to guard against line voltage surges common in commercial distribution systems. The Class A sound rating ensures inaudible ballast operation in open-plan offices, classrooms, healthcare exam rooms, and retail spaces where ballast hum from lower-rated units generates tenant complaints and maintenance callbacks.

Thermal & Environmental Limits

Maximum allowable case temperature is 70°C — verify fixture thermal performance does not exceed this limit in high-ambient environments or in fixtures with restricted airflow, as sustained over-temperature operation is the primary cause of premature electronic ballast failure in commercial installations. The -20°F / -29°C minimum starting temperature makes this ballast suitable for cold storage and outdoor Type 1 applications; however, fixtures using self-shielded Supersaver lamps have a higher minimum starting threshold of 60°F / 16°C and must not be installed in unheated outdoor or cold storage environments with those lamp types.

Certifications & Compliance

• UL Listed: Class P, Type 1 Outdoor
• UL935: Complies with "Type CC" anti-arcing protection rating
• CSA Certified
• ANSI C82.11: Compliant where applicable
• ANSI 62.41 Cat. A: Transient protection
• FCC 47 CFR Part 18: Non-Consumer compliant
• NEMA Premium Electronic M Ballast Program: Qualifies for utility energy incentive programs
• Energy Savings vs. F34T12 magnetic systems: 30–60%
• Energy Savings vs. standard electronic ballasts: Up to 6% (2–5W per fixture)

Disposal

Contains no PCBs. Dispose per applicable local electronic waste regulations. The ballast case and internal components are subject to standard commercial electronic waste handling requirements.

Competitive Cross References

• Universal Triad: B432IUNVEL-A or B432IUNVHP-A
• GE Lighting: GE-432-MAX-N/ULTRA
• Advance Philips: IOP-4P32-N / REB-4P32-SC
• Keystone Technologies: KTEB-432-UV-IS-N-P

Targeted Commercial Applications

• Office troffer and commercial retrofit — energy code compliance — NEMA Premium certification and 0.88 ballast factor deliver measurable watt reduction versus standard BF ballasts, qualifying this unit for utility rebate programs and satisfying ASHRAE 90.1 and Title 24 lighting power density requirements in tenant improvement and renovation projects; the small can enclosure fits standard 2×4 and 2×2 troffer housings without modification.
• Industrial warehouse and cold storage fluorescent fixtures — Type 1 Outdoor UL listing and -20°F minimum starting temperature make this ballast the correct specification for unheated warehouse, loading dock, and outdoor canopy fluorescent fixtures where standard ballasts fail to start in cold ambient conditions; confirm lamp type is not a Supersaver SS variant before specifying for sub-60°F environments.
• Institutional and educational facilities with noise-sensitive occupancies — Class A sound rating ensures inaudible ballast operation in classrooms, libraries, and healthcare facilities where ballast hum generates complaints; the parallel circuit keeps remaining lamps lit after a single lamp failure, reducing urgent maintenance response in occupied spaces between scheduled relamping cycles.

Bulk Commercial Lighting Supply & Project Support

ADL Supply supports electrical contractors, facility managers, and lighting specifiers sourcing fluorescent ballasts and commercial lighting components across the United States. For bulk contractor pricing on the Sylvania Quicktronic QHE4x32T8ISN-SC, compatible T8 fluorescent lamp packages, or utility rebate documentation support, contact our commercial lighting specialists at 1-800-235-3489. We are your premier commercial Lighting Distributor in Doral, Florida.