Accessory List
MF40-7043 Series, MF41-7073 Series, MF41-7153 Series
F-27382-1 © Copyright 2006 TAC. All Rights Reserved. 101
Spring Return TAC DuraDrive
®
Floating Actuator
Model Chart
Specifications
For spring return applications that require floating
control of dampers and valves in HVAC system.
Features:
• 35 lb.-in. (4 N-m), 60 lb.-in (7 N-m), 133 lb.-in (15 N-m).
• Direct mount to round or square damper shaft.
• Overload protection throughout rotation.
• True mechanical clockwise or counterclockwise spring
return operation for positive close-off in airtight
applications.
• Visual position indicator.
• Rotation limiting available.
• MF41-7xxx manual override models.
Model No.
Shaft
Size
Stroke
Actuator Power Input
SPDT
Auxiliary
Switches
Approximate
Timing in
Seconds @ 70°F
(21°C) with No
Load
Output Torque
Rating
lb.-in. (N-m)
Manual
Override
Voltage
Running Holding
50 Hz 60 HZ
DC
Amps
50
Hz
60
Hz
VA W VA W W W Powered
Spring
Return
Min.
a
a
De-rating required for spring return actuators at low temperatures.
Max.
Stall
MF40-7043
b
b
With plenum-rated cable.
5/8”
Dia.
1/2”
Sq.
95° ± 5°
maximum,
adjustable
from 40 to
95° with an
integral
mechanical
stop.
24 Vac
± 20%
22 to 30
Vdc
5.9 4.4 5.9 4.4 .17 2.9 2.9
No
<130 <25 35 (4)
120
(14)
No
MF40-7043-
501
b
One
c
c
One adjustable from 0 to 95° rotation (0 to 1 scale).
MF41-7073
3/4”
Dia.
1/2”
Sq.
95° ± 5°
maximum,
adjustable
from 30 to
95° with
AM-689
rotation
limiter.
6.2 4.8 6.2 4.8 .18 2.8 2.8
No
<195 <30 60 (7)
160
(18)
Yes
MF41-7073-
502
Two
d
d
One adjustable from 25 to 85° rotation and one set to operate @ 5° fixed.
MF41-7153
9.8 7.7 9.7 7.7 .30 3.3 3.3
No
<190 <30
133
(15)
300
(34)
MF41-7153-
502
Two
d
Inputs
Control signal Floating point control, 24 Vac.
Power Refer to Model Chart.
Connections
MF40-7073 and MF40-7153: 3 ft. (0.9 m) long, appliance cable, 1/2 in. conduit connectors. For M20
metric conduit, use AM-756 adapter.
MF40-7043: 3 ft. (91 cm) plenum-rated cables. 1/2 in. conduit connectors. For M20 metric conduit,
use AM-756 adapter.
0
-7
043
e
s,
1
-7073
e
s,
1
-7153
e
s
US
US