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Modutrol IV Motors
M4185 Line Volt; M8185 Low Volt Two-Position
Modutrol IV™ Series 2 Motors
Series 41 and Series 81 Modutrol IV motors are 2-position
(line- and low-voltage per motor control) spring-return motors.
They are used to operate dampers or valves in applications where
it is necessary or desirable to have the controlled element return to
the starting position in the event of power failure or interruption.
• Fixed torque throughout the entire voltage range
• Integral spring return returns motor to normal position
in the event of power failure
• Integral junction box provides NEMA 3 weather protection
if motor is mounted in the upright position
• Motor and circuitry operate from 24 Vac
• Quick-connect terminals are standard--screw terminal adapter is available
• Adapter bracket for matching shaft height of older motors is available
• Motors have field adjustable stroke (90 to 160 degrees)
• Motors are designed for either normally open or
normally closed valves and dampers
• Integral auxiliary switches are available factory mounted,
or can be field added
• Motors can operate valve linkages from the power end or auxiliary
end shafts for normally closed or normally open valve applications
• All models have dual shafts (slotted and tapped on both ends)
Application Type: Electric
Fail Safe Mode: Spring Return
Control Signal: Two position, SPST
Feedback: No
Frequency: 50 Hz; 60 Hz
External Auxiliary Switches Available: Ye s
Auxiliary Switch Ratings AFL - 120 Vac: 7.2A
Auxiliary Switch Ratings ALR - 120 Vac: 43.2A
Auxiliary Switch Ratings AFL - 240 Vac: 3.6A
Auxiliary Switch Ratings ALR - 240 Vac: 21.6A
Electrical Connections: Quick-connect terminals
Mounting: Foot-mounted
Motor Shafts: Dual-ended shaft
Shaft Shape: square
Shaft Dimensions: 0.375 in. (10 mm)
Shaft Rotation (upon control signal increase): Clockwise (as viewed
from power end) (normally closed)
Deadweight Load on Shaft (Either End): 200 lbs.
Deadweight Load (Combined on both Shafts): 300 lbs.
Ambient Temperature Range: -40 F to +150 F (-40 C to +60 C)
Weight: 9.5 lb
Approvals
CE: EN55011 (Emission) EN50082-2 (Immunity) 73/23/EEC (LVD)
Underwriters Laboratories, Inc: Listed: File No. E4436, Guide No.
XAPX for USA and Canada
Accessories:
4074ERU-Weatherproofing kit. Protects motor from driving rain when
mounted in any position
220736A-Internal Auxiliary Switch Assembly - 1 Switch
220736B-Internal Auxiliary Switch Assembly - 2 Switches
220738A-Adapter Bracket. Adjusts shaft height to match Modutrol III
220741A2-TP-Screw Terminal Adapter Kit for 2 position Modutrol IV
Series 2 motors - Converts quick-connect terminals to screw terminals
221455A-Infinitely adjustable Motor Crank Arm
50017460-001-24/120/230 Vac Internal Transformers for Series 2 and 3
Motors
50017460-003-120 Vac Internal Transformers for Series 2 and 3 Motors
Torque/Force
Product Number
M4185A1001/U 60 lb-in. 6.8 Nm 120V 30-60 sec 0 160 degrees Adjustable; 90 to 160
M4185B1009/U 60 lb-in. 6.8 Nm 120V 30-60 sec 1 160 degrees Adjustable; 90 to 160
M4185B1058/U 60 lb-in. 6.8 Nm 24/120/230V 30-60 sec 1 90 degrees Adjustable; 90 to 160
M4185C1007/U 60 lb-in. 6.8 Nm 120V 30-60 sec 2 90 degrees Adjustable; 90 to 160
* M8185D1006/U 60 lb-in. 6.8 Nm 24V 30-60 sec 0 160 degrees Adjustable; 90 to 160
* TRADELINE models • SUPER TRADELINE models
Voltag e
Nominal
Timing
(sec)
Internal
Auxiliary
Switch
Factory
Stroke
Setting Stroke Includes
degrees, Asymmetrical
degrees, Asymmetrical
degrees, Asymmetrical
degrees, Asymmetrical
degrees, Asymmetrical
Internal
Tra nsfo rmerlb-in., lb Nm, N
Transformer 50004263-003
Transformer 50004263-003
Transformer 50004263-001
Transformer 50004263-003
—None
416 customer.honeywell.com 70-6910
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Dimensions in inches (millimeters)
4-7/8
(124)
5-1/2
(140)
13/16
(20)
4-1/16 (103)
1/4
(7)
1-1/2 (37)
5-1/2 (140)
JUNCTION
BOX
MOTOR
AUXILARY
END
POWER
END
ADAPTER
BRACKET
2-9/16
(66)
5-3/8
(137)
6-7/16
(164)
9/16 (15)
3/4
(19)
TOP VIEW OF BRACKET TOP VIEW
4-5/8
(116)
4-1/4
(107)
2-5/16
(58)
11/16
(17)
4-7/8 (124)
5-9/16 (141)
1/4 (7)
5-13/16
(148)
1
POWER END
2
1-1/2 (37)
3/4
(19)
13/16
(20)
M18992B
FOR 60 LB-IN. SPRING RETURN MODELS 8-3/4 (222);
FOR 60 LB-IN. SPRING RETURN MODELS (SHOWN).
1
2
Modutrol IV Motors
Commercial
70-6910 417
Components
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