Lutron MA-L3T251-IV Maestro Dual Dimmer Timer 300W

Product Description

The LUTRON MA-L3T251-IV is a single-pole, dual-function wall control that combines a dimmer and a countdown timer into one device. The upper section operates as an incandescent and halogen dimmer rated at 300 watts and 120 volts, featuring a delayed fade-to-off function that gradually reduces light output after the control is switched off. The lower section is a timer switch rated at 2.5 amps for general-purpose fan loads, 300 watts for incandescent, halogen, and ELV sources, or 250 watts for magnetic low-voltage loads. Softly lit side indicators display preset level and serve as a locator in dark conditions. This device is installed by licensed electricians in residential settings and ships with a wallplate included in an ivory finish.

The MA-L3T251-IV is well suited for bathroom applications where the dimmer controls vanity lighting and the timer controls an exhaust fan. Setting the timer to run the exhaust fan for a defined period after a shower reduces moisture buildup and limits conditions that encourage mold and mildew growth. The timer adjusts from 5 to 60 minutes in preset increments. A top green LED labeled ON allows unlimited-duration operation, while the bottom LED blinks rapidly during the final minute of countdown. The control is single-pole and replaces a standard single-gang wall switch or dimmer without requiring a neutral wire in most configurations.

Key Features

• Dual-section control: 300W incandescent and halogen dimmer on top, 2.5A timer switch on bottom
• Timer range adjustable from 5 to 60 minutes via side rocker
• Delayed fade-to-off on dimmer section allows time to exit a room
• Softly lit orange LEDs on timer section show time remaining before shutoff
• Tap switch toggles on and off; double-tap activates full brightness
• Wallplate included; ivory finish matches other Maestro series devices

Compatibility

Designed for single-pole installations controlling incandescent and halogen lamp loads up to 300 watts, ELV loads up to 300 watts, magnetic low-voltage loads up to 250 watts, and general-purpose fan motors up to 2.5 amps at 120 volts. Compatible with Lutron Claro wallplates for consistent color matching, sold separately.

Installation Notes

Installation should be performed by a licensed electrician in compliance with the National Electrical Code and all applicable local codes. Turn off the branch circuit breaker and verify the absence of voltage with a non-contact tester before removing the existing device. This control is single-pole and requires a hot, load, and ground connection; confirm wiring configuration before installation. Do not install on circuits with incompatible load types such as LED or CFL sources unless explicitly rated for those loads.

Technical Specifications

• Dimmer Load Type: Incandescent and Halogen
• Dimmer Wattage: 300 watts
• Voltage: 120 volts
• Timer Switch Rating: 2.5 amps (fan), 300W ELV and Incandescent and Halogen, 250W MLV
• Timer Range: 5 to 60 minutes
• Wiring Configuration: Single-pole
• Finish: Ivory
• Wallplate Included: Yes
• UPC: 027557289702

Standard Information

• Brand: LUTRON
• Manufacturer Part Number: MA-L3T251-IV