User Guide
OFF
ON
WARNING: SHOCK HAZARD.
May result in serious injury or death. Turn off 
power at circuit breaker or fuse before installing.
1
 Determine wiring type
2
 Turn power OFF at circuit breaker
5
 Connect the new dimmer (MACL)
6
 Mount dimmer using the provided screws
7
 Turn power ON at circuit breaker
8
 Adjust dimming range for CFLs and LEDs 
3
 Remove existing device
Disconnect wires. 
For lights switched from one location
(For lights switched from two locations, see instructions on reverse)
Dimmer 
For the Compatible Bulb List...
Helpful videos...
Advanced programming & operation...
Additional wiring scenarios...
Replacing a dimmer with a dimmer...
or 
If you have three or more switches 
controlling a light...
Please visit: www.lutron.com/macl
If using CFL or LED bulbs, 
they must be Lutron
® 
compatible! 
P/N 0301771 REV A
C
•
L®
4
 Remove middle sections (if ganging devices)
MACL-153M 
120 V~ 60 Hz
LED
DEL
LFCA
CFL
AFC
150 W  
CFL / LED 
600 W 
Incand. /Hal.
INC / HAL
U.S.A.   |  Canada   |  Caribbean 
1.800.523.9466 
Mexico 
+1.888.235.2910
Others 
+1.610.282.3800
Fax 
+1.610.282.6311
Help 
Ground wire (bare or green)
Brass screw
OPTIONAL FOR  INCANDESCENT / HALOGEN
OPERATION
Black screw
Green wire
Limited Warranty:  
www.lutron.com/TechnicalDocumentLibrary/ 
369-119_Wallbox_Warranty.pdf 
©2013-2015 Lutron Electronics Co., Inc. 
®
Lutron, Lutron, Claro, Satin Colors, Maestro, and C
•
L 
are registered trademarks of Lutron Electronics Co., Inc.
Hold 
T
 & 
L
 until an indicator light 
(IL) blinks on the MACL dimmer.
Or
L
T
R
Hold
L
until bottom indicator light (IL) 
is reached. 
Tap 
R
 until all bulbs in the room are 
on and stable (no flickering). 
Single tap 
T
 to save setting.
Single tap 
T
 to turn off bulbs. 
Single tap 
T
 again. 
If all bulbs do not turn on or are not 
stable, repeat step 8a, and in step 8b 
increase light with 
R
.
R
T
Remove middle sections if mounting 2 or more devices side 
by side. See Maximum Ratings chart below for the new 
wattage limits. 
NOTE: No derating is required when using only CFLs or LEDs.
For lights switched from two locations, see instructions on 
the reverse side. 
For lights switched from one location, proceed to Step 2 
below.
Remove
Use 12 / 14  AWG Use 14 AWG
Keep 
OR
1/2 in 
(13 mm) 
Raise lights
Tap to toggle lights 
on / off.
Double-tap to turn 
lights on to full 
intensity.
Press & hold for 
delayed fade-to-off.
Lower lights
F
A
S
S
T
M
•
F
A
S
S
T
M
•
F
A
S
S
T
M
•
F
A
S
S
T
M
•
F
A
S
S
T
M
•
F
A
S
S
T
M
•
T
R
L
Displays the current light level
Indicator Lights (IL)
FASSTM
MAXIMUM RATINGS FOR MIXED LOAD TYPES
INC / HAL
 Incandescent / Halogen 
0 W + 600 W 500 W 400 W
1 W – 25 W + 500 W 400 W 300 W
26 W – 50 W + 400 W 300 W 200 W
51 W – 75 W + 300 W 200 W 100 W
76 W – 100 W + 200 W 100 W 50 W
101 W – 125 W + 100 W 50 W 0 W
126 W – 150 W + 0 W 0 W 0 W
LED
DEL
LFCA
CFL
AFC
Pull tab out for bulb replacement.
T
L
&
IL
CFL
MACL
www.lutron.com/macl
www.lutron.com/macl
+
IMPORTANT
1.   CAUTION: Use only with permanently installed fixtures with dimmable 
screw-in compact fluorescent, dimmable screw-in LED, halogen, or 
incandescent lamps. To avoid overheating and possible damage to other 
equipment, do not use to control receptacles, motor-driven appliances, or 
low-voltage transformer-supplied appliances.
2.   Install in accordance with all national and local electrical codes.
3.   When no “grounding means” exists in wallbox, the 2011 National 
Electrical Code
® (NEC®) allows a control to be installed as a replacement 
if 1) a nonmetallic, noncombustible faceplate is used with non-metallic 
attachment screws or 2) the circuit is protected by a ground fault circuit 
interrupter (GFCI). When installing a control according to these methods, 
cap or remove green wire before screwing control into wallbox and use an 
appropriate faceplate such as Claro
® or Satin Colors® series wallplates by 
Lutron.
4.   3-way wiring must use only one Maestro
® C•L® Dimmer and a Maestro® 
Companion Dimmer (MA-R, MA-RR, MSC-AD) or an existing switch. 4-way 
wiring must use only one Maestro
® C•L® Dimmer and up to 9 Maestro® 
Companion Dimmers (MA-R, MA-RR, MSC-AD).
5.   For indoor use only between 32 °F and 104 °F (0 °C and 40 °C).
6.   Maestro
® C•L® Dimmers may feel warm to the touch during normal 
operation.
7.   Maximum wire length between the Master Dimmer and the last 
Companion Dimmer (MA-R, MA-RR, MSC-AD) is 150 ft (46 m).
8.   Clean dimmers with a soft damp cloth only. Do not use any 
chemical cleaners. 
Fully wrap the wires around the screw and tighten (A), or strip 
insulated wires to 1/2 in (13 mm) and insert into the push-in 
terminals (B).
If your bulbs are flickering, buzzing or dropping out, your bulbs may 
not be compatible. Please visit www.lutron.com/macl to check the 
Compatible Bulb List. 
A B
A
B
C




