• Control for air damper applications with up to 20 sq.ft. assuming 3.5 in-lb per sq.ft. of damper area, velocity independent.
• Magnetic coupling eliminates the need for mechanical stops or limit switch adjustments by limiting stall torque to 130 lb-in. maximum.
• Mount directly on 3/8 to 1/2 in. round and square damper shafts.
• All models include manual declutch lever for ease of mounting, and bag assembly with two minimum position setscrews. 90 second timing models are suitable for use with pressure independent VAV systems.
• Selectable 45, 60, and 90 degree stroke in either clockwise or counterclockwise direction.ML6174D2009 STANDARD, 90 SEC TIMING| Rotation to Open | By wiring |
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| Overview | Used to control dampers in applications such as variable air volume (VAV) terminal units and for mounting on ball valves; suitable for use with SPDT or floating thermostats or building automation controls. |
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| Torque/Force (lb-in., lbf) | 70 lb-in. |
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| Supply Voltage | 24 Vac ±20% |
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| Fail Safe Mode | Non-Spring Return |
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| Number of Internal Auxiliary Switch | 0 |
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| Shaft Adapter Type | Aluminum Hub, two set screws |
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| Manual operation | Declutch mechanism |
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| Maximum Stall Torque/Force (lb-in., lbf) | 130 lb-in. |
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| Maximum Stall Torque/Force (Nm, N) | 14 Nm |
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| Rotational Stroke | 90 degrees |
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| Rotational Stroke Adjustment | Mechanically limited at 45 or 60 degrees in cw or ccw directions |
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| Timing, Nominal Driving @ 60 Hz (sec) | 90 sec |
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| Compatible Damper Shafts (in.) | 3/8 to 1/2 in. square or round |
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| Compatible Damper Shafts (mm) | 10 to 13 mm square/round |
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| Materials | Steel plate and Plenum rated plastic |
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| External Auxiliary Switches Available | Yes, 201052B |
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| Power Consumption (Driving) | 2.4 VA |
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| Dimensions (in.) | 5.86 in high x 3.63 in wide x 3.74 in deep |
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| Electrical Connections | Screw terminals |
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| Temperature Range, Ambient (F) | 20 F to 125 F |
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| Dimensions (mm) | 149 mm high x 92 mm wide x 95 mm deep |
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| Temperature Range, Ambient (C) | -18 C to +50 C |
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| Temperature Range, Storage (F) | 20 F to 130 F |
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| Temperature Range, Storage (C) | -18 C to +54 C |
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| Maximum Noise Rating, Driving (dB(A) @ 1m) | 45 |
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| Environmental Rating | NEMA1 |
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| Approvals, Canadian Underwriters Laboratories | cUL C22.2 No. 24-93 |
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| Operating Humidity Range (% RH) | 5 to 95% RH, non-condensing |
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| Approvals, Underwriters Laboratories Inc | UL873, Plenum Rated |
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| Includes | 4074ENY Bag Assembly |
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| Comments | Includes two 5/8 x 7/8 in. double knock-out conduit |
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Product Family
Cross Reference
| Honeywell, Inc. | ML6174D2009 |
| Control Signal | Floating Pt. |
| Power | 24 |
| Torque (in-lb) | 70 |
| Timing (Seconds) | 90 |
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| Belimo Aircontrols (USA), Inc. | NMB24-3 |
| Belimo Control Signal | Floating Pt. |
| Belimo Power (24V actuators are AC/DC) | 24 |
| Belimo Torque | 90 |
| Belimo Timing | 95 |
| Return Type | Non Spring Return |
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| Above replacements may require additional mounting accessories. Manufacturer Suggested Replacement |
| Honeywell, Inc. | ML6174D2009 |
| Control Signal | Floating Pt. |
| Power | 24 |
| Torque (in-lb) | 70 |
| Timing (Seconds) | 90 |
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| Belimo Aircontrols (USA), Inc. | NMB24-3 |
| Belimo Control Signal | Floating Pt. |
| Belimo Power (24V actuators are AC/DC) | 24 |
| Belimo Torque | 90 |
| Belimo Timing | 95 |
| Return Type | Non Spring Return |
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| Above replacements may require additional mounting accessories. Manufacturer Suggested Replacement |
| Honeywell, Inc. | ML6174D2009 |
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| Siemens Building Technologies | GLB131.1P |
| Comment | Elec. Damper Actuator 75 lb.-in. |
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| Manufacturer Suggested Replacements |
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All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
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