SYLVANIA QHE-4X32T8-UNV-ISH-HT | QUICKTRONIC® High-Efficiency High-Output 4-Lamp T8 Electronic Ballast

The Sylvania QUICKTRONIC® QHE-4X32T8-UNV-ISH-HT is a commercial-grade, high-efficiency **instant-start electronic ballast** engineered to run three or four standard or energy-saving T8 linear fluorescent and U-bend lamps. Specially designed for high-temperature (**HT**) industrial settings and dual-voltage **120V or 277V systems operating at 50/60Hz**, this high-performance component features an **elevated high ballast factor (ISH) of 1.15** to maximize lumen output from standard fixture frameworks. Outfitted with an integrated **Lamp Striation Control (LSC)** circuit layout, it effectively minimizes or eliminates the rhythmic pulsing patterns that commonly impact energy-saving fluorescent tubes. Housed in a heavy-duty industrial enclosure, this NEMA Premium certified ballast yields a **Total Harmonic Distortion (THD) under 10%**, making it an exceptional option for commercial high-bays, distribution warehouses, schools, and strict code-compliant energy modernization upgrades.

High-Output Multi-Lamp Scaling and High-Temperature Industrial Stability

Sylvania QUICKTRONIC® High Efficiency High Output (QHE ISH) ballasts optimize lumen density across commercial fluorescent grids by delivering 30% to 60% system energy retention when compared to older legacy F34T12 magnetic components, while offering an amplified **1.15 ballast factor** for maximum brightness. Running with a **parallel wiring loop configuration**, this ballast ensures that if one lamp suffers an electrical failure or is physically broken, the remaining lamps continue to operate at full brightness. Its built-in **Lamp Striation Control (LSC)** system acts as an electronic filter, resolving unstable arc distributions often triggered inside energy-saving 25W and 28W T8 fluorescent modifications. Engineered with a specialized **High Temperature (HT) case rating** to resist sustained ambient stresses in high-bay assemblies, this platform delivers dependable operation within strict sustainability projects.

• High Ballast Factor Configuration (1.15): Formulated to maximize light levels for elevated workspaces and commercial areas, increasing initial luminaire footcandles while optimizing overall cathode lifespan.
• Parallel Circuit Wiring Layout: Isolates individual lamps within the multi-lamp array, enabling non-interrupted operational status across remaining functional tubes.
• NEMA Premium Qualification: Passes the highest structural thresholds for commercial rebate verification programs and qualifies corporate spaces for regional energy utility incentives.
• Optimized High-Temperature Thermal Management: Engineered to safely function up to a **70°C (158°F)** maximum internal case temperature threshold under rugged high-bay thermal environments.

Comprehensive Lamp Compatibility Guide

This high-efficiency electronic engine is certified to strike and operate the following fluorescent configurations in 3-lamp or 4-lamp multi-lamp configurations:

• F32T8 (48-Inch 32W Standard Lamps): Runs either 3 or 4 lamps concurrently.
• FO32/28W (48-Inch Energy Saving 28W Lamps): Runs either 3 or 4 lamps concurrently.
• FO32/25W (48-Inch Energy Saving 25W Lamps): Runs either 3 or 4 lamps concurrently.
• F32T8/ECO (48-Inch Ecology / Low Mercury Lamps): Runs either 3 or 4 lamps concurrently.
• FO30/SS (48-Inch Energy Saving 30W Advantage Lamps): Drives exactly 4 lamps concurrently.
• FO40 (60-Inch Fluorescent T8 Tubes): Drives exactly 3 lamps concurrently.
• U-Bend Fluorescent Modules: Safely runs 3 or 4 lamps across standard commercial U-bend footprints including FBO16, FBO24, FBO29SS, FBO30SS, FBO31, and FBO32 models.

Comprehensive Technical Specifications

• Brand Name: Sylvania
• Product Line / Series: QUICKTRONIC® High Efficiency (QHE) Series
• Model/Ordering Designation Code: QHE-4X32T8-UNV-ISH-HT
• Technology Class: Solid State Electronic Ballast
• Ignition Ignition Protocol: Instant Start
• Circuit Wiring Loop Profile: Parallel Layout
• Supported Lamp Type: T8 Linear Fluorescent & T8 U-Bend Series
• Number of Supported Lamps: 3 or 4 Lamps (Refer to lamp compatibility matrix)
• Nominal Input Voltage: Dual Sensing 120V to 277V Line Currents
• Input Electrical Frequency: 50/60Hz
• Target Ballast Factor Metric: 1.15 High Ballast Factor (High Output Max Power Tuning)
• Total Harmonic Distortion (THD): < 10% (High-Efficiency Optimization)
• Maximum Allowable Case Temperature: 70°C (158°F) HT maximum limit
• Remote Mounting Capabilities: Certified up to 20 feet using proper lead wire gauges
• Regulatory Compliance Standards: UL Listed Class P, Type 1 Outdoor, Complies with UL935 Type CC Requirements, RoHS Compliant, CSA Certified, FCC 47 CFR Part 18 Non-Consumer Industrial Class, ANSI C82.11 Compliant, Manufactured without hazardous PCBs
• Physical Dimensions: 9.47" L x 1.69" W x 1.18" H

System Integration, Wiring Guidelines & Handling Protocols

• Mandatory Socket Shunting Requirements: Instant start electronic ballast networks require the use of **shunted lampholders (sockets)**. The internal socket wiring or duplicate side terminals must be interconnected (shorted) according to the case diagram before linking into the structural secondary ballast output wire leads. This ensures stable high-frequency current pathways to the cathodes.
• National Electrical Code Alignment: Ensure all wiring runs are permanently enclosed within a code-compliant electrical raceway or fixture gutter. The metal chassis of the ballast container **must be mechanically grounded** directly to the facility's equipment grounding conductor (green wire or bare conduit framework) to protect against unexpected ground faults and maintain clear FCC compliance.
• Thermal Environment Thresholds: This ballast maintains a native starting limit down to **-20°F (-29°C)** for standard T8 tubes. However, when paired with high-efficiency **SUPERSAVER® / Energy Saving (SS) lamps**, the minimum starting threshold shifts up to **60°F (16°C)**. Operating energy-saving lamps below this threshold may trigger hard-starting strain, early flickering, or premature cathode burn-out.
• Dimming & Sensor Optimization: This module features integrated **QUICKSTEP® Bi-Level Dimming** hooks for advanced energy management adjustments alongside full **POWERSENSE®** infrastructure compliance. It coordinates flawlessly with building occupancy sensors, daytime harvesting photocells, and automated management circuits to provide customizable workspace lighting thresholds.

Recommended Professional & Commercial Applications

• High-Bay Linear Infrastructure: Highly suited for manufacturing assembly floors, climate-controlled storage facilities, warehouses, and distribution centers with elevated ceiling networks.
• Commercial Corporate Spaces & Retail Hubs: Excellent for high-output $2 \times 4$ modular office troffers, common supermarkets, large departmental sales floor fixtures, and school gyms.
• Institutional Safety & High-Temperature Zones: Ideal choice for facilities requiring robust, high-heat operation where maximized task visibility and structural reliability are required.