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Honeywell M4185 & M8185 Line Volt Two-Position Modutrol IV™ Series 2 Motors

Line Volt Two-Position Modutrol IV™ Series 2 Motors
M4185 & M8185

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 when power is interrupted.
• Integral junction box provides NEMA 3 weather protection.
• 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° - 160°).
• Motors are designed for either normally open or normally closed valves and dampers.
• All models have auxiliary switch cams.
• 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).

Select a link under the "item" tab below to order.

Cat #VoltageIncludesInternal Auxiliary Switch(lb-in., lb)(Nm, N)NominalStroke
M4185A1001120VTransformer060 lb-in.6.8 Nm30-60 secAdjustable; 90° to 160°, Asymmetrical
M4185B1009120VTransformer160 lb-in.6.8 Nm30-60 secAdjustable; 90° to 160°, Asymmetrical
M4185B105824/120/230VTransformer160 lb-in.6.8 Nm30-60 secAdjustable; 90° to 160°, Asymmetrical
M4185C1007120VTransformer260 lb-in.6.8 Nm30-60 sec30-60 secAdjustable; 90° to 160°, Asymmetrical
M8185D100624V060 lb-in.6.8 NmVAdjustable; 90° to 160°,Asymmetrical
Application Type Electric
Fail Safe Mode: Spring Return
Control Signal: Two position, SPST
External Auxiliary Switches Available: Yes
Auxiliary Switch Ratings AFL - 120 Vac: 7.2 A
Auxiliary Switch Ratings ALR - 120 Vac: 43.2A
Auxiliary Switch Ratings AFL - 240 Vac: 3.6 A
Auxiliary Switch Ratings ALR - 240 Vac: 21.6 A
Feedback: No
Electrical Connections: Quick-connect terminals
Frequency: 50 Hz; 60 Hz
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
Canadian Standards Association: Certified: File No. LR1620, Guide
No. 400-E
CE: EN55011 (Emission) EN50082-2 (Immunity) 73/23/EEC (LVD)
Underwriters Laboratories Inc. Listed File: E4436, Guide: XAPX2

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