GE332MAX90-S60 P/N 73233 Instant Start Electronic Ballast

The GE UltraMax™ Step Dimming 73231 (GE332MAX90-S60) Ballast is a commercial-grade, multi-voltage electronic control gear module engineered to operate two or three standard or energy-saving T8 linear fluorescent lamps. Designed for universal 120–277V grids, this high-performance step-dimming ballast delivers line-voltage bi-level control, alternating seamlessly between 100% full output and 60% energy-saving levels. Outfitted with an active power factor correction circuit, integrated anti-striation controls to prevent visual tube rolling during dimmed states, and a high-performance ballast factor (1.18 BF), this 90°C case-rated unit is the definitive architectural solution for stairwells, corridors, and sensor-driven building grids.

ADL Supply Expert Application & Replacement Guide

The GE UltraMax 73231 step-dimming ballast is a premier energy management baseline specified heavily by commercial electrical contractors, energy code compliance engineers, and institutional property managers. Unlike complex analog dimming layouts that mandate dedicated 0-10V low-voltage auxiliary wire tracks, this module achieves bi-level load modulation directly via standard line-voltage switching infrastructure. It interfaces seamlessly with occupancy sensors, building automation relays, and dual wall switches, providing facilities with a robust method to cut continuous operational utility costs during low-occupancy periods.

Critical Line Switch Mechanics & Shunted Sockets Mandate: Field installers retrofitting fixtures must closely evaluate electrical circuit pathing before wrapping wire joins. The bi-level dimming sequence is controlled by powering two separate hot input wire lines into the ballast chassis. When both control loops feed power, the ballast hits a high 1.18 ballast factor for 100% full brightness. Interrupting power to one line instantly drops output to 60%, reducing localized lumen delivery and trimming watt consumption across the circuit branch.

Furthermore, because its baseline starting framework relies on Instant Start engineering, **this ballast strictly mandates the use of shunted lampholders at all socket positions**. Shunted sockets incorporate an internal metal bridge connecting left and right pin contacts, enabling the high-voltage arc ignition strike to clear cleanly. Running this ballast on un-shunted sockets will isolate terminal pins, causing ignition failure, rapid arc tracking across base plastic, or immediate damage to internal output transistors. Ensure any unused blue lead wires are safely insulated to 600 VRMS inside the wire channel.

Detailed Product Specifications

• Brand: GE Lighting (Current Lighting Solutions / UltraMax™ Commercial Division)
• Product Series Line: UltraMax™ High-Efficiency Step-Dimming Line-Voltage Series
• GE Factory Product Order Code SKU: 73231
• Manufacturer Description Model: GE332MAX90-S60
• UPC Barcode Number (GTIN-12): 043168732314
• Core Technology Class: Solid-State Electronic Step Dimming Ballast
• Starting Method Classification: Instant Start base platform (Sensor and relay optimized)
• Dimming Graduation Format: Dual-Level Bi-Step Switching (100% full power / 60% standby power)
• Lamp Wiring Selection Architecture: Parallel Circuit Operation (Lamps run independently)
• Nominal Operational Input Voltage: 120V to 277V (Direct Line Multi-Volt Auto-Sensing)
• Continuous Input Voltage Security Range: 108V Minimum to 305V Maximum Branch Line Tolerances
• Line Current Frequency Threshold: 50 / 60 Hz
• Systemic Ballast Factor (BF): 1.18 High Output Ballast Factor baseline rating at full capacity
• Total Harmonic Distortion (THD) Limit: Less than or equal to 10% (Commercial Grade Electrical Isolation)
• Power Factor Correction Level: Active Correction Network (Greater than or equal to 0.98)
• Audible Component Sound Rating: Class A (Whisper Quiet Operations)
• Minimum Operating Ambient Temperature: -22°F (-30°C) for standard standard F32T8 lamps
• Maximum Case Temperature Rating (Tc): 90°C (194°F Rugged Extended Heat Dissipation Package)
• Special Feature Matrix: Active Anti-Striation Control (Eliminates zebra-banding or shimmering during low step loads)
• Safety Enclosure Rating: UL Type CC (Anti-Arcing Protections Standard), UL Type 1 Outdoor, UL Type HL
• Design Standards Matrix: ANSI C82.11 Compliant, FCC Part 18 Class A Non-Consumer

Certified System Load Matrix (Lamping Matrix)

This multi-lamp step controller is fully certified to strike and manage the following tube configurations safely. Do not mix linear lengths or differing wattages on the same ballast terminal line:

• (2 or 3 Lamps) F32T8: Standard 32W 48-inch linear fluorescent lamps
• (2 or 3 Lamps) F28T8: High-efficiency energy-saving 28W linear fluorescent lamps
• (2 or 3 Lamps) F25T8: Standard 25W 36-inch linear fluorescent lamps
• (2 or 3 Lamps) F17T8: Standard 17W 24-inch linear fluorescent lamps
• (2 Lamps Only) F40T8: Specialized high-lumen 40W 48-inch linear fluorescent lamps
• (2 or 3 Lamps) T8 U-Bend: Standard 32W U-shaped fluorescent lamps with 1-inch or 6-inch spacing

Operation, Safety & Mounting Compliance

High-Frequency Electronic Signal Transformation

This electronic assembly converts raw municipal alternating current into high-frequency ballast outputs exceeding 42 kHz, completely eliminating stroboscopic workplace eye fatigue and structural flickering loops common in old low-frequency magnetic systems. It incorporates an automated active surge insulation barrier that blocks standard utility switching transients and operational spikes from breaking down sensitive internal solid-state board capacitors.

Chassis Physical Structural Footprint Dimensions

• Maximum Overall Length (MOL): 9.50" Inches (241.3mm actual bracket length)
• Chassis Housing Body Length: 8.89" Inches (225.8mm actual shell length)
• Chassis Housing Section Width: 1.70" Inches (43.2mm actual wider can footprint width)
• Chassis Total Housing Height: 1.18" Inches (30.0mm actual vertical thickness)
• Center Mounting Hole Distance: 8.89" Inches (225.8mm center-to-center slot spacing)
• Maximum Remote Mounting Field Distance: Up to 6 feet using 18 AWG solid copper wire lines

Commercial Control Gear Equipment Cross-References

This universal 73231 ballast serves as a premium drop-in replacement or electrical equivalent for the following models:

• Philips Advance Match: Mark 7 / Step Dimming IZT-3S32-SC Series Alternatives
• Sylvania Quicktronic Match: Powersense / Step Dimming QTP 3x32T8/UNV DIM-SC lines
• Universal Triad Alternative: Touch to Dim / Step Dimming B332PUNV-D lines

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.