Independent reference · not a sales listing
Westinghouse 0477100
Westinghouse MR11 Narrow Flood 5 Watt GU4 Base Clear Lens Low Voltage Halogen Lamp
Westinghouse lists this MR11 GU4 halogen at 5 watts and 27 lumens. Its stated light color is 2900 K warm white. No incandescent-equivalent claim is stored for this model.
View the official record ↗Source citation, not a buying link.Before replacing it
Read these five fields before ordering
Use the old bulb and fixture label together. A shared base or wattage figure answers only part of the fit question.
- 01
Socket and shape
Match GU4 exactly. The MR11 code describes the bulb envelope, not the socket. Open the GU4 base guide. Check the MR11 shape profile.
- 02
Electrical rating
The source lists 6 V. Confirm that against the fixture and local supply.
- 03
Brightness, not “watts”
Target about 27 lumens. The 5 W figure is input power, not brightness.
- 04
Physical clearance
The official maximum overall length is 1.38 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 come from the cited manufacturer record. If that record omits a field, the table says “not stated” instead of supplying a likely value. See how the label fields differ.
- Manufacturer
- Westinghouse
- SKU / model
- 0477100
- Technology
- HALOGEN
- Shape
- MR11
- Base
- GU4
- Voltage
- 6 V
- Input power
- 5 W
- Incandescent equivalent
- Not stated
- Light output
- 27 lumens
- Color temperature
- 2900 K
- CRI
- Not stated
- Dimmable
- Yes
- Rated life
- 2,000 hours
- Beam angle
- 16° · estimate spread
- Location rating
- Not stated
- Enclosed fixture
- Not stated
- Pack quantity
- 1
For comparison
Records with the same base and similar output
Same GU4 base and within 35% of 27 lumens. These are comparison leads, not confirmed substitutes.
Related references
Put this model in context
The record describes one lamp. Use these guides for the socket, fixture, controls, and comparable records from the same manufacturer.
GU4 · 4 mm bi-pin reflector base
GU4 uses two straight pins spaced a nominal 4 mm apart and is commonly paired with MR11 reflectors.
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 0477100
What socket does Westinghouse 0477100 use?
Westinghouse lists this model with a GU4 base. Look for the same complete base code on the socket or old lamp. The MR11 shape is a separate specification.
Is Westinghouse 0477100 dimmable?
Yes. The official record marks this model as dimmable, but the installed dimmer must also support the lamp technology and load.
Can Westinghouse 0477100 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.
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