• Brushless DC submotor with electronic stall protection on all models
• Self-centering shaft adaptor (shaft coupling) for wide range of shaft sizes
• Models available for use with two-position, SPST, line- (Series 40) or low- (Series 80) voltage controls
• Models available for use with floating or switched SPDT (Series 60) controls
• Models avail able for use with proportional current or voltage (Series 70) controls
• Models available with combined floating and modulating control in a single device
• Models available with an internal end switch
• Access cover to facilitate connectivity
• Durable plastic housing with built-in mechanical end limits
• Spring return direction field selectable
• Shaft position indicator and scale
• UL (cUL) listed and CE compliant
• All models are plenum rated per UL873Honeywell DCA 27 in LBS 24V Mod w/M.P.Input Impedance | Min. 95 kOhm |
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Type of Internal Auxiliary Switch | Min. Pos. |
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Rotation to Open | By switch |
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Overview | The MS7403 is a 27 lb-in (3Nm), spring return direct-coupled, line voltage actuator that accepts on/off (SPDT), modulating (2-10 Vdc) or Three-Position control for: air dampers, air handlers, ventilation flaps, louvers, and ball valves. |
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Torque/Force (lb-in., lbf) | 27 lb-in. |
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Fail Safe Mode | Spring Return |
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Number of Internal Auxiliary Switch | 0 |
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Control Signal | 2-10 Vdc (4-20 mA w/500 ohm resistor) |
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Temperature Ratings (Shipping)(F) | .-40 F to +150F |
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Temperature Ratings (Shipping)(C) | .-40 C to +65 C |
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Ingress Protection Rating | IP54 |
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Shaft Adapter Type | Self-centering clamping |
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Spring Return Torque/Force (lb-in., lbf) | 27 lb-in |
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Spring Return Torque/Force (Nm, N) | 3 Nm |
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Maximum Stall Torque/Force (lb-in., lbf) | 70 lb-in. |
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Maximum Stall Torque/Force (Nm, N) | 8 Nm |
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Rotational Stroke | 95 ±3 degrees |
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Rotational Stroke Adjustment | Mechanically limited 5 degree increments |
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Spring Return Direction | By orientation |
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Timing, Maximum Spring Return (sec) | 25 sec |
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Timing, Nominal Driving @ 60 Hz (sec) | 90 sec |
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Compatible Damper Shafts (in.) | 3/8 to 5/8 in. round or 1/4 to 1/2 in. square |
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Compatible Damper Shafts (mm) | 9 to 16 mm round or 6 to 13 mm square |
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Materials | Plenum rated plastic housing |
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External Auxiliary Switches Available | No |
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Power Consumption (Driving) | 6/3 VA |
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Dimensions (in.) | 6 81/54 high x 3 55/84 wide x 3 5/32 deep |
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Electrical Connections | Enclosed screw terminal strip (22 to 14 AWG) |
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Temperature Range, Ambient (F) | .-40 F to +149F |
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Dimensions (mm) | 177 mm high x 98 mm wide x 80 deep |
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Temperature Range, Ambient (C) | .-40 C to +65 C |
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Temperature Range, Storage (F) | .-40 F to +150F |
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Temperature Range, Storage (C) | .-40 C to +65 C |
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Maximum Noise Rating, Driving (dB(A) @ 1m) | 40 |
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Maximum Noise Rating, Holding (dB(A) @ 1m) | 20 (no audible noise) |
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Environmental Rating | NEMA2 |
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Approvals, Canadian Underwriters Laboratories | cUL C22.2 No. 24-93 |
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Approvals, CE | EMC 2004/108/EC; Certification Low Voltage Directive 2006/95/EC; IEC 60730-1 and Part 2-14 |
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Operating Humidity Range (% RH) | 5 to 95% RH, non-condensing |
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Approvals, Underwriters Laboratories Inc | UL 873 |
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Includes | Mounting bracket, self-centering shaft adapter |
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Product Family
All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
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You can also find answers to some common questions on our FAQ page
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