Sylvania 49652 QT1x54/277PHO

Product Overview

Sylvania Quicktronic QT-1x54-277PHO-DIM — 1-Lamp T5HO Dimmable Fluorescent Ballast, 277V

The Sylvania Quicktronic QT-1x54-277PHO-DIM is a 1-lamp T5HO dimmable electronic ballast from Sylvania, designed for architectural dimming, daylight harvesting, and energy management applications. Operating at 277V with 0-10V dimming control and a dimming range of 100% to 1%, this ballast is compatible with 54W T5HO, FT55DL, and FPC55 fluorescent lamps. PROStart programmed rapid start, QUICKSENSE end-of-lamp-life sensing, and anti-flash circuitry are standard. UL, CSA, FCC listed and RoHS compliant. Verify lamp type, lamp count, and input voltage before ordering.

Lamp Count

1 Lamp

T5HO

Input Voltage

277V

Single Voltage

Dimming

0-10V

100% to 1%

Start Type

Programmed

Rapid Start

Wattage

54W

T5HO

Technical Specifications

Brand	Sylvania
Series	Quicktronic Helios T5HO
Model	QT-1x54-277PHO-DIM
Ballast Type	Electronic Dimmable — Programmed Rapid Start
Lamp Count	1 Lamp
Compatible Lamp Family	T5HO Fluorescent
Compatible Lamps	FP54T5HO, FT55DL, FPC55
Input Voltage	277V
Dimming Control	0-10V
Dimming Range	100% to 1%
Start Method	PROStart Programmed Rapid Start
End-of-Lamp-Life Sensing	QUICKSENSE technology
Anti-Flash	Yes — dimmed mode
Power Factor	High
Harmonic Distortion	Low
Warranty	QUICK 60+ warranty
Listings / Compliance	UL, CSA, FCC, RoHS Compliant, Lead-Free Solder

Product Overview

The Sylvania Quicktronic QT-1x54-277PHO-DIM is a high-performance dimmable T5HO ballast built for architectural and energy management applications. The wide 0-10V dimming range — 100% down to 1% — makes it well suited for daylight harvesting systems, occupancy sensor integration, building automation, and load shedding scenarios where continuous light level adjustment is required.

PROStart programmed rapid start extends lamp life by preheating cathodes before striking the arc, a significant advantage over instant start ballasts in high-switching or dimming applications. QUICKSENSE end-of-lamp-life technology detects lamp failure and shuts down the ballast circuit to protect both the ballast and fixture. Anti-flash circuitry prevents unwanted lamp flashing at low dim levels.

T5HO lamps on this ballast deliver approximately 188% of the lumen output of a comparable T8 system with the same number of lamps — enabling single-lamp fixtures to replace two-lamp T8 configurations in many applications.

Compatible Lamps

(1) FP54T5HO — 54W T5HO fluorescent lamp
(1) FT55DL — 55W DULUX L fluorescent lamp
(1) FPC55 — 55W PENTRON HO Circline fluorescent lamp

Compatible Applications

Architectural dimming — Continuous adjustment from full output to near-off for ambient lighting control.
Daylight harvesting — Integrates with photosensors to reduce electric light output as daylight increases.
Occupancy and vacancy sensors — Compatible with 0-10V sensor-based dimming systems.
Building automation and energy management — Supports load shedding and centralized lighting control via 0-10V control signal.
Single-lamp T5HO fixture applications — One-lamp high-output fixtures replacing two-lamp T8 designs.

Before Ordering — Verify

Lamp Type: Confirm your lamp is FP54T5HO, FT55DL, or FPC55.
Lamp Count: This is a 1-lamp ballast. Do not use with 2-lamp fixtures.
Input Voltage: Confirm your circuit is 277V. This is not a universal voltage ballast — a separate 120V model is required for 120V circuits.
Dimming Control: Confirm your dimming system outputs a 0-10V control signal compatible with this ballast.