Build Your Own Actuator

Model AS4 Electric Actuator

Model AS4 Electric Actuator

Model AS4 spring return electric actuator is a robust heavy-duty actuator recommended for systems requiring as many as 74 cycles per day (approximately 27,000 annually). Like model ES2, the operating cycle life of the actuator is drastically affected by the model of operation. Power to open and close will provide for years of reliable performance. AS4 has a spring end torque of 400 lb-in with a closing speed of 3 sec./90 degrees upon loss of power. This actuator is ideally suited for ball valves and dampers with torque ratings of up to 300 lb-in.

Standard equipment includes 115Vac-1ph Continuous duty motor with thermal overload protection, set to fail closed (CW rotation) upon loss of power, two limit switches, power on brake, stainless steel fasteners, 300 series stainless steel output drive, polyester powder coating.


Print Specifications
Output Torque: 400 Lb-In (45.2 Nm)
Motor 115Vac-50/60Hz-1Ph.
Cycle Time: 12 sec/90°
Duty Cycle: 25%
Mode of Operation: Power open and close, spring to function only upon loss of main power supply.
OPTIONAL VOLTAGES: 230Vac-50/60Hz-1Ph.with thermal overload protection.
Lock Rotor Current: 115Vac. = 2.99 Amps.
230Vac. = 2.74 Amps.
Enclosure: NEMA 4 Standard
Sand-cast aluminum with 300 series stainless steel fasteners and thermally bonded polyester powder coating.
Output Drive: ISO 5211 F07 (17 mm male square)
Mounting: Universal, ISO 5211 F07
Manual Over Ride: Consult factory
Lubrication: Permanent
Temperature: -40° F to +140° F (heater required at 0° F. and below).
Weight: 60 Lbs.
Switches: 16 A. 125/250VAC
AVAILABLE OPTIONS: Extended duty motor, maximum of 4 auxiliary switches, declutching manual over ride with hand wheel, NEMA 7 enclosure, feedback potentiometer, 4-20mA position transmitter (requires 24Vdc power supply), compartment heater, heater and thermostat, breather, light indication, two wire control, remote/off/local control panel, and one additional conduit entry.