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Lutron Electronics Co., Inc.
7200 Suter Road
Coopersburg, PA 18036-1299, U.S.A.
Made and printed in the U.S.A. 11/03 P/N 030-735 Rev. B

Operation

Limited Warranty

Lutron will, at its option, repair or replace any unit that is defective in materials or manufacture within one year after
purchase. For warranty service, return unit to place of purchase or mail to Lutron at 7200 Suter Rd., Coopersburg, PA
18036-1299,  postage pre-paid.

THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES,  AND THE IMPLIED WARRANTY OF
MERCHANTABILITY IS LIMITED TO ONE YEAR FROM PURCHASE. THIS WARRANTY DOES NOT COVER THE
COST OF INSTALLATION, REMOVAL OR REINSTALLATION, OR DAMAGE RESULTING FROM MISUSE, ABUSE,
OR DAMAGE FROM IMPROPER WIRING OR INSTALLATION. THIS WARRANTY DOES NOT COVER INCIDEN-
TAL OR CONSEQUENTIAL DAMAGES. LUTRON’S LIABILITY ON ANY CLAIM FOR DAMAGES ARISING OUT OF
OR IN CONNECTION WITH THE MANUFACTURE, SALE, INSTALLATION, DELIVERY, OR USE OF THE UNIT
SHALL NEVER EXCEED THE PURCHASE PRICE OF THE UNIT.

This warranty gives you specific legal rights, and you may have other rights which vary from state to state. Some states
do not allow the exclusion or limitation of incidental or consequential damages, or limitation on how long an implied
warranty may last, so the above limitations may not apply to you. 
This product is covered under one or more of the following U.S. patents: 4,835,343; 5,248,919; 5,399,940; 5,510,679;
5,637,930; 5,798,581; DES 353,798 and corresponding foreign patents. U.S. and foreign patents pending. Lutron,
Claro, and Maestro are registered trademarks and FASS is a trademark of Lutron Electronics Co., Inc. NEC is a reg-
istered trademark of the National Fire Protection Association, Quincy, Massachusetts.
© 2003 Lutron Electronics Co., Inc.

Technical Assistance

If you have questions concerning the installation or operation of this product, call the 

Lutron Technical

Support Center.

Please provide exact model number when calling. (800) 523-9466 (U.S.A., Canada, and

the Caribbean)
Other countries call (610) 282-3800
Fax (610) 282-3090
Internet: www.lutron.com
email: [email protected]

®

Electronic Low Voltage Dimmer

MAELV-600, MSCELV-600M 
(600 W maximum, 5 W minimum) 120 V

, 60 Hz 

Smart Remote

MA-R, MSC-AD
(8.3 A maximum) 120 V

, 60 Hz 

Important Notes

1.

Caution:

To avoid overheating and possible damage to other equipment,

do not use to control receptacles, fluorescent lighting fixtures, motor-oper-
ated or transformer-supplied appliances.

2.

Install in accordance with all national and local electrical codes.

3.

When no “grounding means” exist within the wallbox then the NEC

®

2002, Article 404-9 allows a dimmer without a grounding connection to
be installed as a replacement, as long as a plastic, noncombustible
wallplate is used.  For this type of installation, cap or remove the green
ground wire on the dimmer and use an appropriate wallplate such as
Lutron's Claro

®

series wallplates.

4.

Do not paint Dimmers or Smart Remotes (MA-R, MSC-AD).

5.

Use to control the primary side of electronic transformer-supplied low-
voltage lighting, incandescent lamps, or a combination of the two.

6.

Some fixture manufacturers do not recommend dimming their solid-state
transformers. To determine if a fixture can be dimmed, consult the fixture
manufacturer.  

7.

This product requires a neutral wire in the wallbox. If a neutral wire is not
present, contact a licensed electrician for installation.

8.

This control is overload protected. If the rated wattage is exceeded,
power to the circuit will shut off until the control cools. It this occurs,
remove excess load from the circuit.

9.

Maestro

®

Dimmers are not compatible with standard 3-way switches, for

use only with Smart Remotes (MA-R, MSC-AD).

10.

Smart Remotes (MA-R, MSC-AD) can not be used individually but must
be used in conjunction with a Maestro

®

Dimmer in a 3-way/4-way applica-

tion.

11.

Only one Maestro

®

Dimmer can be used in a multi-location circuit with up

to nine Smart Remotes (MA-R, MSC-AD). The Smart Remotes (MA-R,
MSC-AD) must be wired on the line side of the Dimmer.

12.

In multi-phase applications, use a separate neutral for each phase con-
taining a dimmed circuit.

13.

Operate between 0°C (32° F) and 40°C (104° F).

14.

Dimmer may feel warm to the touch during normal operation.

15.

Recommended wallbox depth is 2 1/2" (64 mm) minimum.

16.

Maximum wire length between the Dimmer and the last Smart Remote
(MA-R, MSC-AD) is 300 feet (91 m).

17. Clean with a 

soft damp cloth only

.

Do not use any chemical cleaners.

Multigang Installations

When combining controls in the same wallbox, remove all inner side sections
prior to wiring (see below).  Using pliers, bend side sections up and down until
they break off. Repeat for each side section to be removed. Reduction of
Dimmer capacity is also required. Refer to chart below for maximum Dimmer
capacity.

Breaking Side
Sections

IMPORTANT NOTICE:

FASS

TM

- Front Accessible Service Switch - to replace

bulb, power may be conveniently removed by sliding
FASS switch to the left, on both the Dimmer and any
Smart Remotes.

For any procedure other than routine

lamp replacement, power must be disconnected at
the main electrical panel.

Dimming Rocker

Press to brighten

Press to dim

LED light level 
indicators

Tap Switch Options

Tap once -

Lights adjust

smoothly to level set by rocker.

Tap twice quickly -

Lights adjust

rapidly to full.

Tap again -

Lights adjust

smoothly to off.

• Fade to OFF -

Press and hold to

activate delayed fade to OFF. As
tap switch is held the bottom
LED will begin to flash indicating
a 10 second fade to off. Each
subsequently flashing LED rep-
resents 10 seconds of delay
before dimmer fades to OFF (up
to 60 seconds).

• Locked-in Preset -

Tap 4 times

quickly to set the current light
level as the “Locked-in” preset
(the LEDs will blink twice indicat-
ing the preset was locked). When
the dimmer is turned ON via this
button it will always go to this
“Locked-in” light level rather than
the previous light level. To unlock
the preset, tap the switch 4 times
quickly (the LEDs will blink three
times indicating the preset was
unlocked).

Troubleshooting

No Sides

Removed

600W

1 Side

Removed

500W

Sides Removed

2 Sides

Removed

400W

Type of 
Smart Dimmer

Electronic Low-voltage

600W

Symptom

Light does not turn on.

Lamps flicker with low-volt-
age loads.

LEDs do not turn OFF when
FASS

TM

switch on the dim-

mer is in the OFF position
(to the left).

Lights cycle OFF and ON.

Dimmer does not respond
properly to a Smart
Remote.

Possible Cause

• Front Accessible Service Switch (FASS

TM

) on the

Dimmer or Smart Remote is switched to the left
(See Step 5).

• Light bulb(s) burned out.
• Breaker is off or tripped.
• Dimmer not wired correctly.
• Neutral not wired to Dimmer (white wire).

• Wrong load type used. Verify that load is electronic

low-voltage. 

• The yellow and black wires are reversed. See wiring

diagram in Step 5 for correct wiring.

• Overload protection circuit active – remove excess

load to correct.

• Smart Remote is not on the line side of the Dimmer.

Do Not Remove

Outside Sections

Each Control Has Inside

Section Removed

Middle Control Has Two Side

Sections Removed

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