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Westinghouse Ceramalux C150S55/D Diffused 150W High Pressure Sodium Lamp Diffused first generation design. Keywords: Lamps

Westinghouse Ceramalux C150S55/D Diffused 150W High Pressure Sodium Lamp

Diffused first generation design.

_IMG0289.JPG _IMG0292.JPG WC-C150S55-D-40-1.jpg WC-C150S55-1.jpg DSC05858.JPG
Lamp/Fixture Information
Manufacturer:Westinghouse Electric Corporation
Model Reference:C150S55/D
Lamp
Lamp Type:High Pressure Sodium
Filament/Radiator Type:PCA (Poly Crystal Alumina)
Base:E39 (Mogul)
Shape/Finish:BT25
Service Life:24,000 Hrs +
Burning Position:Universal
Fixture
Ballast Type:S55
Electrical
Wattage:150W ~
Voltage:55V ~
Current:3.20A ~
Optical
Lumen Output:15,000 (Initial) / 13,500 (Average)
Lumen Efficacy:100/90 LPW
Colour Temperature:2100K CCT ~
Colour Rendering Index:25%
Physical/Production
Factory Location:Bath, NY USA
Fabrication Date:4/80
Application/Use:Residential Streets & Security
File information
Filename:WC-C150S55-D-40-1.jpg
Album name:Eric / High Pressure Sodium Lamps
Keywords:Lamps
Filesize:412 KiB
Date added:30 May 2026
Dimensions:2048 x 1267 pixels
Displayed:69 times
URL:https://trad-lighting.net/gallery/displayimage.php?pid=1291
Favourites:Add to Favourites

Comment 1 to 3 of 3
Page: 1

Max   [Sat 30 May 2026 at 07:57]
Nice little classic. It's not common to find a low-voltage cap-sealed burner combined with a diffuse outer bulb.
347vPowerlite   [Sun 31 May 2026 at 16:26]
Nice lamp, not only that it's a BT-25 too which looks a bit cooler than the late ED lamps.
Eric   [Sun 31 May 2026 at 17:53]
@Max - Yep, that's why I went for it when I saw these on eBay.
@347V - Couldn't agree more...something kinda magical about the BT25 design, either clear, diffused or phosphored.

Comment 1 to 3 of 3
Page: 1