Independent reference · not a sales listing
Westinghouse 0487100
Westinghouse T4 40 Watt G9 Base Halogen Lamp
This is a 40-watt halogen with a T4 envelope and G9 base. It produces 480 lumens. The listed light color is 2800 K warm white. No incandescent-equivalent claim is stored in the source snapshot.
View the official record ↗Source citation, not a buying link.Before replacing it
Five checks decide the fit
A shared base or wattage alone is not enough. Work down the list with the old bulb and fixture label in hand.
- 01
Socket
Match G9 exactly. The T4 code describes the bulb envelope, not the socket. Open the G9 base guide.
- 02
Electrical rating
The source lists 120 V. Confirm that against the fixture and local supply.
- 03
Brightness, not “watts”
Target about 480 lumens. The 40 W figure is input power, not brightness.
- 04
Physical clearance
The official maximum overall length is 1.69 inches. Check shade, cover, and neck clearance.
- 05
Heat, controls, and location
Enclosed-fixture use is not stated; it is marked dimmable; a wet/damp rating is not stated.
Normalized specifications
What the label says
These values are transcribed and normalized from the official source. A blank claim stays “not stated”; it is never filled by assumption.
- Manufacturer
- Westinghouse
- SKU / model
- 0487100
- Technology
- HALOGEN
- Shape
- T4
- Base
- G9
- Voltage
- 120 V
- Input power
- 40 W
- Incandescent equivalent
- Not stated
- Light output
- 480 lumens
- Color temperature
- 2800 K
- CRI
- Not stated
- Dimmable
- Yes
- Rated life
- 2,000 hours
- Beam angle
- Not stated
- Location rating
- Not stated
- Enclosed fixture
- Not stated
- Pack quantity
- 1
Useful next check
Nearby specification matches
Same G9 base and within 35% of 480 lumens. These are comparison leads, not confirmed substitutes.
BPQ40/G9/CAN
T4 · G9 · 40 W
470 lm 3000 KFeit ElectricBPQ40/G9/RP
T4 · G9 · 40 W
470 lm 3000 KFeit ElectricBPXN40/G9/2
T4 · G9 · 40 W
470 lm 3000 KWestinghouse0485500
T4 · G9 · 40 W
460 lm 2800 KFeit ElectricBPQ50/IF/G9/2/HDRP
T4 · G9 · 50 W
550 lm 3000 KFeit ElectricBPQ35/G9/CAN
T4 · G9 · 35 W
400 lm 3000 KRead the specification in context
Use the record, then check the system
The label describes this lamp. These guides help connect it to the socket, room, controls, and other models from the same manufacturer.
G9 · Looped bi-pin
G9 uses two wire loops rather than straight pins. The lamp pushes into the socket and is common in compact decorative fixtures.
Open reference →Control guideDimmable vs non-dimmable LED
Read the bulb's claim separately from dimmer compatibility and fixture conditions.
Read guide →Color guide2700K vs 3000K vs 5000K
Understand how the listed color temperature changes the look of a room.
Read guide →Manufacturer indexMore Westinghouse model records
Compare verified models from the same official catalog snapshot by SKU, base, shape, power, and output.
Browse brand →Quick answers
Questions about 0487100
What socket does Westinghouse 0487100 use?
The official record identifies a G9 base. The replacement socket must use the same base code; a similar-looking bulb shape does not establish socket compatibility.
Is Westinghouse 0487100 dimmable?
Yes. The official record marks this model as dimmable, but the installed dimmer must also support the lamp technology and load.
Can Westinghouse 0487100 be used in an enclosed fixture?
The source snapshot does not state an enclosed-fixture rating. Do not infer one from shape or wattage; confirm on the bulb or manufacturer page.
BulbMatch stores factual fields for independent label and compatibility research. It is not affiliated with the manufacturer and does not sell this product.