Honeywell ML4115 Fire and Smoke, Fast-Acting, Two-Position Actuators
Spring return direct coupled actuators (DCA) for on/off damper control with an integral junction box. The actuator accepts an on/off signal from a single-pole, single-throw (SPST) controller. They are designed to operate reliably in smoke control systems requiring Underwriter's Laboratories Inc. UL555S ratings up to 350 F.
• Integral spring return.
• No audible noise during holding.
• Electronic circuitry provides efficient operation while eliminating the need for limit switches.
• Ninety-five degree angle of rotation for tight damper closure.
• Die-cast aluminum housing.
• Housing design allows flush mounting to damper.
• Integral junction box with three conduit openings eliminates need for separate wiring box.
• Mounts to 3/8 or 1/2 in. round or square shaft.
• High-temperature indicator included.
Select a link under the "item" tab below to order.
| Includes | Number of Internal Auxiliary Switch | Control Signal | Spring Return Direction | Supply Voltage | Maximum Driving @ 60 Hz | Nominal Driving @ 60 Hz | Cat # | Maximum Spring Return | Holding | Driving |
| Ground Screw | 0 | Two position; SPST | CCW | 120 Vac ±10% | 25 sec | 18 sec | ML4115A1009 | 15 sec | 0.11A, 9W | 0.18A, 18W |
| Ground Screw | 0 | Two position; SPST | CW | 120 Vac ±10% | 25 sec | 18 sec | ML4115B1008 | 15 sec | 0.11A, 9W | 0.18A, 18W |
| Actuator Type: | Damper | ||
| Rotational Stroke: | 95 ±3 degrees | ||
| Fail Safe Mode: | Spring Return | ||
| Torque: | (3.4 Nm) 30 lb-in. | ||
| Maximum Stall Torque: | 150 lb-in. (17 Nm) | ||
| Minimum Driving Torque at 350 F: | 30 lb-in. (3.4 Nm) | ||
| Spring Return Torque: | 30 lb-in. (3.4 Nm) | ||
| External Auxiliary Switches Available: | Yes, 32003532-005 | ||
| Electrical Connections: | Two color-coded leads | ||
| Electrical Connection Length: | 16 in. (406 mm) | ||
| Environmental Rating: | NEMA1 | ||
| Frequency: | 60 Hz | ||
| Mounting: | Direct Coupled | ||
| Maximum Noise Rating, Holding (dBA @ 1m): | 20 (no audible noise) | ||
| Maximum Noise Rating, Driving (dBA @ 1m): | 65 | ||
| Number of Internal Auxiliary Switch: | 0 | ||
| Compatible Damper Shafts: | 3/8 to 1/2 inch square or round (10 to 13 square/round) | ||
| Shaft Adapter Type: | Aluminum Hub, two set screws | ||
| Materials: | Aluminum housing | ||
| Operating Humidity Range (% RH): | 5 to 95% RH, non-condensing | ||
| Ambient Temperature Range: | 0 F to +130 F (-18 C to +55 C) | ||
| Storage Temperature Range: | -40 F to 140 F (-40 C to +60 C) | ||
| Weight: | 6 lb (2.72 kg) | ||
| Approvals: | |||
| Underwriters Laboratories Inc. | UL873, Plenum Rated | ||
| Underwriters' Laboratories of Canada: | cUL C22.2 No. 24-93 | ||
| Comments: | Integral junction box with three 7/8 in. conduit openings(fittings not included) | ||
