Sylvania 49497 QHE2x32T8UNV ISH-HT-SC

QUICKTRONIC QHE 2X32T8/UNV ISH-HT-SC – 2-Lamp 32W T8 Instant Start Electronic Ballast | 120–277V | 1.20 Ballast Factor | 90°C High Ambient | NAED 49497

The QUICKTRONIC QHE 2X32T8/UNV ISH-HT-SC (item 27468X, NAED 49497) is a two-lamp instant start electronic ballast for 32W T8 fluorescent lamps, from the High Efficiency Series with Lamp Striation Control. It operates on universal 120–277V input, delivers a 1.20 ballast factor in the two-lamp configuration, and is rated for a 90°C maximum case temperature in high ambient applications such as industrial high bays. Circuit type is parallel, so remaining lamps stay lit if one fails. THD is under 10% and power factor is above 98%. Supplied in the small "SC" enclosure with leads only, packed as a J10 10-pack.

Technical Specifications

Product Overview

The QHE High Efficiency series is built around a simple proposition: same light, less power. The manufacturer cites up to 6% energy savings against standard low-power T8 electronic ballasts without giving up light output, and 30–50% savings against F40T12 magnetically ballasted systems. System efficiency is over 90%, and paired with energy-saving lamps these systems exceed 100 lumens per watt.

What separates this particular model from the rest of the QHE line is the HT in the catalog number — the high case temperature rating. It is specified for applications where the ballast itself sits in elevated ambient temperatures, most commonly high bays in industrial buildings where heat collects at the ceiling. Note carefully that 90°C is a maximum case temperature measured on the ballast, not an ambient air rating, and that the warranty term depends on which regime the ballast operates in: 90°C high ambient applications carry a 3-year warranty, while standard ambient applications at 70°C maximum case temperature carry 5 years.

Instant start operation gives the highest system efficacy and low temperature starting capability, down to -20°F for full wattage T8 lamps. Parallel circuitry keeps the remaining lamp lit if one fails, which matters in high bays where a dark fixture means a lift and a service call. Lamp Striation Control circuitry addresses the banding that energy-saving T8 lamps can show when run cool; the manufacturer is candid that LSC may not fully mitigate striations in every application. Universal 120–277V input eliminates wrong-voltage errors on the job and cuts ballast inventory roughly in half.

Compatible Applications

• High bay lighting in industrial and warehouse buildings, where ballast case temperatures run high
• Energy retrofits replacing F40T12 magnetic or standard T8 electronic ballasts
• Commercial and retail two-lamp T8 fixtures
• Hospitality and institutional installations
• New construction specifying high ballast factor T8 systems
• Primary lamp: 32W T8 fluorescent, two-lamp operation
• Also operates FB32, FB31, F30/SS (30W), FB30/SS (30W), FB29/SS (29W), F28/SS (28W), and F25/SS (25W) lamps
• Compatible with other manufacturers’ equivalent lamp types that meet ANSI specifications, including energy-saving and U-bend F32 equivalents
• Installations requiring GFCI compatibility or an emergency ballast in the same fixture
• Outdoor-rated fixtures, per the UL Type 1 Outdoor listing

Before Ordering – Verify

• Confirm the ballast factor you need. This two-lamp model is 1.20 BF. The three-lamp QHE 3X32T8 UNV ISH HT SC is 1.18 BF. Both fall in the family’s published 1.18–1.20 range, but they are not the same number.
• Confirm 90°C is a case temperature, not an ambient rating. Measure at the location indicated on the ballast label. Operating above the marked maximum voids the warranty.
• Confirm the remote mounting distance against the lamp type. The maximum wire run from ballast case to lampholder is 20 ft for full wattage T8s, but only 10 ft for energy-saving T8s and 4 ft for 25W energy-saving T8s. This is the most commonly missed limit on this ballast.
• Confirm the starting temperature against the lamp type. Full wattage T8 lamps start at -20°F, but energy-saving T8 lamps require 60°F. Operation below 50°F may affect light output or lamp operation regardless of lamp type.
• Confirm the enclosure fits. This is the SC small enclosure at 9.5 in. long with an 8.90 in. mounting centerline.
• Confirm the supply falls within 108–305V, which is ±10% of the 120–277V rated line.
• Confirm the warranty term that applies to your installation — 3 years in high ambient use at 90°C, 5 years in standard ambient use at 70°C.
• If striations on energy-saving lamps are a concern, note that LSC circuitry minimizes but does not guarantee elimination in every application.
• This item ships as a J10 10-pack.

Safety and Handling Guidelines

• Disconnect power at the breaker before installing, wiring, or replacing the ballast.
• Wire per the QUICKTRONIC 2x32 diagram: black and white are line input, red and blue are lamp output.
• For one-lamp operation, cap any unused blue lead and insulate it to 600 volts.
• Use only replacement lamps that comply with applicable lamp and ballast manufacturers’ ratings, compatibility listings, and instructions.
• Direct replacement LED tubes should not be used unless they have been certified for electrical safety, are compatible with this ballast, and are suitable for the application environment.
• Mount so the case stays at or below its marked maximum temperature, and do not obstruct airflow around the enclosure.
• Recycle or dispose of removed fluorescent lamps and ballasts according to local regulations, as fluorescent lamps contain mercury.
• Installation should be performed by a qualified electrician in accordance with the National Electrical Code and local codes.

Compliance

• UL Listed Class P, Type 1 Outdoor
• CSA Certified
• FCC 47 CFR Part 18, Non-Consumer equipment
• ANSI C62.41 Category A transient protection
• Class A sound rating
• RoHS compliant, per European Union Directive EC 2002/95
• Lead-free solder and manufacturing process
• 3-year limited warranty in high ambient applications at 90°C maximum case temperature; 5-year limited warranty in standard ambient applications at 70°C maximum case temperature
• Specifications per QUICKTRONIC document ECS404R1; specifications subject to change without notice, and actual performance may differ as a result of end-user environment and application

Ordering Information

• Item number: 27468X
• NAED cross reference: 49497
• Catalog description: QHE 2X32T8 UNV ISH HT SC
• Packaging: J10 — 10-pack
• Catalog number decode: QHE (High Efficiency) / 2 (number of lamps) / 32T8 (primary lamp wattage) / UNV (120–277V line voltage) / IS (instant start) / H (high ballast factor) / HT (high case temperature rating) / SC (small case size)
• Three-lamp equivalents: item 274690 / NAED 49500 (banded pack) and item 27468Y / NAED 49499 (J10 10-pack), both 1.18 ballast factor
• Case and project quantities available

For wholesale pricing, bulk availability, or help confirming the correct replacement ballast, contact ADL Supply at 1-800-235-3489.