The TAC-Invensys MA-418 submerged actuator, is for Two-position operation of damper, valves, and other equipment which require the return to normal position upon power interruption. The TAC-Invensys MA-418 includes spring return, rugged die cast aluminum with two 1/2-inch conduit openings, an oil immersed motor and gear train, and is compatible with most SPST control devices.
Product Specifications
| Power Supply |
120 VAC (60 Hz) |
| Auxiliary Switches |
SPDT makes (or breaks) circuit at
powered end of stroke. |
| Input |
70 W (Running) 25 W (Holding) |
| Running Power Consumption |
108 VA |
| Holding Power Consumption |
42 VA |
| Rated Torque |
60 lb-in |
| Rated Torque |
6.8 N-m |
| No Load Timing at 75°F (24°C) |
20 |
| Nominal Damper Area (Parallel) |
33 ft2 |
| Nominal Damper Area (Parallel) |
3.1 m2 |
| Nominal Damper Area (Opposed) |
43 ft2 |
| Nominal Damper Area (Opposed) |
4 m2 |
| Control Circuit |
Two-Wire |
| Shaft Rotation |
CW 170° when power is applied. |
| Spring Return |
Direction CCW to original position
when actuator is de-energized |
| Ambient Temperature Limits
(Shipping & Storage) |
- 40°F to 136°F (- 40°C to 58°C) |
| Humidity Ratings (Non Condensing) |
5% to 95% |
| Environmental Location |
NEMA Type 4 with gasket (provided) and
water-tight conduit connectors (not provided) installed. |
| Connections |
Coded screw terminals |
| Case |
Die cast aluminum with two 1/2"
conduit openings. |
| Base Actuators Dimensions (H x W x
D) |
5 3/4" x 5 3/8" x 6 9/16" |
| Base Actuators Dimensions (H x W x
D) |
146 mm x 136 mm x 167 mm |
| Hazardous Location Actuators
Dimensions ( H x W x D) |
8 7/8" X 8 1/2" X 10 5/8" |
| Hazardous Location Actuators
Dimensions ( H X W X D) |
225 mm x 216 mm x 167 mm |
| Damper Linkage |
AM-111 Crank arm for 5/16" diameter
damper shaft
AM-112 Crank arm for 3/8" diameter damper shaft
AM-113 Crank arm for actuator or 1/2" diameter damper shaft
AM-115 Crank arm for 7/16" diameter damper shaft
AM-116 Splined crank arm for actuator
AM-122 Linkage connector straight type
AM-123 Damper Clip
AM-125 5/16" diameter x 20" damper rod
AM-125-048 5/16" diameter x 48" damper rod
AM-132 Ball joint connector
AM-161 Damper linkage kit
AM-161-1 Damper linkage kit
AM-301 90° mounting bracket (except MA6, MA7, MA8-XXX) |
| Mounting |
Allow 6" (152 mm) clearance behind the
actuator wiring compartment. Outright Shaft Horizontal |
| Application |
Damper and Valve Actuators |
| Valve Linkage |
AV-29 & AV-300 2 1/2" & 3" VB-9323
AV-391 1/2" to 1 1/4" VB-92XX or VB-93XX
AV-392 1 1/2" & 2" VB-92XX or VB-93XX
AV-395 2 1/2" to 4" VB-92XX or VB-931X |
