Whelen Engineering Co., Inc. A490 T-DF-28
| Make | Whelen Engineering Co., Inc. |
|---|---|
| Model | A490 T-DF-28 |
| Condition | Salvage |
| Location | Arcadia, FL , US |
| Date Listed | Aug 9, 2026 |
| Expires | Sep 8, 2026 |
Description
Whelen A490 T-DF-28 Strobe Light Power Supply 28V
This listing is for a genuine Whelen Engineering A490 T-DF-28 aircraft strobe-light power supply designed for a 28-volt DC aircraft electrical system .
The unit’s original data label identifies it as a double-flash strobe power-supply module rated at 28 VDC, 0.85 amps , with a marked weight of 1.2 lbs . It carries visible FAA-PMA and STC SA800EA markings.
Whelen replacement documentation identifies the A490 T-DF-28 as a legacy single-lighthead, double-flash, 28-volt strobe power supply .
Identification Details
Manufacturer: Whelen Engineering Co., Inc.
Model: A490 T-DF-28
Component: Strobe-light power supply
Operating Voltage: 28 VDC
Rated Current: 0.85 amps
Flash Pattern: Double flash
Supported Lightheads: One
Serial Number: T-28-24656
Marked Weight: 1.2 lbs
Approval Markings: FAA-PMA / STC SA800EA
Manufacturer Location: Deep River, Connecticut
Additional Marking: JA26D5010-10
Inspection Marking: Tested inspection stamp visible
Date Marking: November; complete year is not clearly readable
Key Features
Genuine Whelen aircraft lighting component
A490 T-DF-28 legacy configuration
Designed for 28-volt DC aircraft systems
Double-flash strobe operation
Operates one compatible strobe lighthead
Remote-mounted power-supply module
Attached interconnecting cable
Metal enclosure with four-hole mounting flanges
FAA-PMA and STC SA800EA markings
Suitable for inspection, replacement, overhaul, core, or restoration use
Sold exactly as photographed
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