Build Your Own Actuator

SR & SX Nema 7

SR & SX Nema 7

The SR & SX series NEMA 7 rotary electric actuator was designed solely for applications within the 200 lb × in (model SR) and 300 lb × in (model SX) torque range used in hazardous locations. These heavy-duty reversing actuators are used in place of model SD, SR, SDX and SX when the area requires enclosure rating of Class I Groups C & D or Class II Groups E, F & G div. I and II. These compact actuators are equipped with spur gear drive and, as in all ICI actuators, can withstand stall conditions without suffering gear failure. The heavy-duty sand-cast aluminum enclosure meets NEMA 7 specifications and has a thermally bonded ultraviolet resistant polyester powder coating that not only enhances its appearance but also is a tough corrosion resistant coating.

Standard equipment includes 115Vac-1ph motor with thermal overload protection, two limit switches wired for light indication, stainless steel fasteners, 300 series stainless steel output drive and spring friction brake.


Print Specifications
Output Torque 200 Lb-In (22.6 Nm) & 300 Lb-In (33.9 Nm)
Cycle Time: 5 sec/90° rotation
Duty Cycle: 25%
Motor: 115Vac-50/60Hz-1Ph. Standard
12Vdc, 24Vdc, 24Vac (24Vdc rectified) with manual reset (turn off then back on) overload protection. 230Vac-50/60Hz-1Ph.with automatic reset thermal overload protection and spring friction brake.
Lock Rotor Current 115Vac. = .75 Amps., SX – 1.0 Amps.
230Vac. = .38 Amps.
12Vdc. = 4.0 Amps.
24Vdc. = 3.2 Amps.
24Vac. = 3.2 Amps.
NEMA 7 Standard
Die-cast aluminum with 300 series stainless steel captured screws and thermally bonded polyester powder coating.
NEMA 4X and 4X & 7 Sand-cast aluminum with 300 series stainless steel screws and manual override shaft and thermally bonded polyester powder coating. Output Drive: ISO 5211 F05 (14mm female star) 300 series stainless steel.
Mounting: Universal, ISO 5211 F05 mounting pad
Manual Override: Available upon request (not CSA certified)
Lubrication: Permanent
Temperature: -40° F to +140° F (heater required at 0 F. and below).
Weight: 15Lbs.
Switches: 16 A. 125/250VAC
Certification: CSA NEMA 7
Extended duty (75%) motor (cycle time = 10 sec./90 ° ), maximum of 4 auxiliary switches, power off brake, declutching manual override with hand wheel, feedback potentiometer, 4-20mA positioner (equipped with 24vdc power supply for transmitter), 4-20mA position transmitter (requires 24Vdc power supply), compartment heater, heater and thermostat, breather, three position control, light indication, two wire control, timer, speed control, remote/off/local control panel, electronic torque sensor and one additional ½” NPT conduit entry.