30 lb-in. (3.4 N
•m) or 80 lb-in. (5.9 N
•m) minimum driving torque at 350 F (176 C).
Reversible mounting facilitates use in either clockwise (cw) or counterclockwise (ccw) spring rotation.
Integral spring return ensures level of return torque.
Fifteen-second spring return timing.
No special cycling required during long-term holding.
No audible noise during holding.
Patent pending design eliminates need for limit switches to reduce power consumption.
Models available for 24, 120, and 230 Vac.
Ninety-five degree angle of rotation.
Actuator holds rated torque at reduced power level.
Die-cast aluminum housing.
Housing design allows flush mounting to damper.
Designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc. UL555S ratings up to 350 F.
Models available with SPST position-indicating switches (7 degree, 85 degree stroke).Fast-acting, two-position actuator with 30 lb-in., spring return| Overview | The Honeywell MS8104 Fast-Acting, Two-Position Actuators are 24 V, 30 lb-in., spring return direct coupled actuators (DCA) for Fire and Smoke dampers (on/off control). The actuator accepts an on/off signal from a single-pole, single-throw (SPST) controller. Reversible mounting allows actuator to be used for either clockwise (cw) or counterclockwise (ccw) spring rotation. |
|---|
| Ambient Temperature Range (F) | 0 F to +130 F |
|---|
| Ambient Temperature Range (C) | -18 C to +55 C |
|---|
| Supply Voltage | 24 Vac +20% -10% |
|---|
| Fail Safe Mode | Spring Return |
|---|
| Shaft Dimensions (in.) | 1/2 in. round |
|---|
| Shaft Dimensions (mm) | 13 mm round |
|---|
| Control Signal | Two position; SPST |
|---|
| Torque Rating (lb-in.) | 30 lb-in. |
|---|
| Shaft Adapter Type | Aluminum Hub, two set screws |
|---|
| Spring Return Torque/Force (lb-in., lbf) | 30 lb-in. |
|---|
| Spring Return Torque/Force (Nm, N) | 3.4 Nm |
|---|
| Spring Return Direction | By orientation |
|---|
| Materials | Aluminum housing |
|---|
| Internal Auxiliary Switch | 0 |
|---|
| External Auxiliary Switches Available | No |
|---|
| Dimensions (in.) | 8.9 in high x 5.13 in wide x 3.32 in deep |
|---|
| Electrical Connections | Color-coded leads |
|---|
| Dimensions (mm) | 227 mm high x 129 mm wide x 84 mm deep |
|---|
| Operating Humidity Range (% RH) | 5 to 95% RH, non-condensing |
|---|
| Approvals, Underwriters Laboratories Inc | UL873, Plenum Rated |
|---|
| Comments | Two integral 3/8 in. clip-in flexible conduit connections |
|---|
| Electrical Connections (mm) | 1 m |
|---|
| Spring Return Timing | 15 sec |
|---|
| Shipping and Storage Temperature Range (F) | -40 F to 140 F |
|---|
| Environmental, Electrical or Ingress Protection Rating | NEMA 1, IP40 |
|---|
| Additional Torque Ratings (lb-in.) | Maximum Stall-- 150 lb-in.; Minimum Driving at 350 F-- 30 lb-in. |
|---|
| Electrical Connections (in.) | 39 in. |
|---|
| Maximum Noise Rating | Driving (dB(A) @ 1m)-- 80; Holding (dB(A) @ 1m)-- 20 (no audible noise) |
|---|
| Additional Torque Ratings (Nm) | Maximum Stall-- 17 Nm; Minimum Driving at 175 C-- 3.4 Nm |
|---|
| Approvals, Canadian Underwriters Laboratories Inc. | cUL C22.2 No. 24-93 |
|---|
| Timing, Nominal | Driving @ 60 Hz-- 15 sec |
|---|
| Power Consumption | Driving-- 16VA, Holding-- 8 VA |
|---|
| Shipping and Storage Temperature Range (C) | -40 C to +60 C |
|---|
| Application | Fire and Smoke |
|---|
Product Family
All orders are shipped same-day if the order is received by 1:00 PM Central Time. We ship worldwide.
UPS Hoilday Delivery Schedule
For more infomation about Returns visit Returns
For more informatrion about Warranty visit Warranty page.
You can also find answers to some common questions on our FAQ page
Reviews
Not reviewed yet, be the first to write one!
Add Review
|