Overview
The Lutron D-603P-WH is a solid-state rotary dimmer designed for 3-way incandescent and halogen lighting applications. This Claro rotary dimmer operates at 120V with a 600W wattage capacity and incandescent/halogen load type. As the original solid-state dimmer introduced in 1961, the Claro Rotary Dimmer sets the lighting standard for mood and ambiance control. This white gloss finish unit integrates seamlessly into standard 1-gang wall openings and requires no neutral wire connection for installation.
Key Features
- Push on/off knob with easy-to-use rotary control for exceptional lighting adjustment
- Soft locator light glows when off, making the dimmer easy to find in darkness
- Installation takes just 15 minutes with existing wiring and requires no neutral wire connection
- Available with eco-dim® feature for energy savings
- Compatible with incandescent and halogen bulbs
- Gloss white finish coordinates with Lutron Claro wall plates
Technical Specifications
The D-603P-WH delivers reliable performance across standard residential and light commercial applications:
- Voltage Rating: 120 VAC at 60 Hz
- Load Capacity: 600 W
- Load Type: Incandescent/Halogen
- Operation: 3-Way
- Switch Type: Rotary push on/off knob with smooth linear dimming
- Ambient Temperature: 32 to 104 Deg F
- Mounting: Standard 1-gang wall box (screwless/seamless)
- Dimensions: 2.94 Inch W x 1.61 Inch D x 4.69 Inch H
- Finish: Gloss white
- Approvals: CSA, NOM, UL
- Features: Square law dimming, power-failure memory, RFI suppression, soft-glow nightlight
Typical Applications
The Lutron D-603P-WH serves residential and light commercial lighting control needs:
- Bedroom and living room incandescent lighting mood adjustment
- Hallway and stairwell ambient lighting in 3-way configurations
- Dining room chandelier and recessed incandescent dimming
- Bathroom vanity and accent lighting control with nightlight feature
- Hospitality and retail environments requiring incandescent load control
Compatibility & Replacements
Compatible With
- Standard 3-way wiring configurations (requires one dimmer per circuit)
- Traditional paddle switches and momentary contact switches
- Incandescent A-lamp, PAR, and halogen bulbs up to 600W
- Lutron Claro wall plates and designer finishes
- Residential and commercial electrical panel installations rated for 120V 60Hz
Replaces / Drop-In Replacement For
- Earlier generation Lutron rotary dimmers in D-series
- Verify compatibility with your original installation documentation before ordering to ensure exact model match
Works With
- Lutron Designer and Claro wall plate systems
- Standard single-pole and 3-way residential electrical wiring
- Incandescent and halogen load ecosystems
- Compatible with older Lutron Diva paddle dimmer wiring schemes for replacement flexibility



