Spring Return Actuators - Model AS4

Model AS4:

An electric spring return actuator producing 400in-lbs. of torque, the AS4 is a robust heavy-duty actuator.  This actuator is 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 over load 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.

SPECIFICATIONS:
Output Torque 400 lb·in
Cycle Time 12 sec/90°
Duty Cycle 25%
Motor 115Vac-50/60Hz-1Ph.

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

Thermally bonded polyester powder coating.

OPTIONAL ENCLOSURES:
NEMA 4X

NEMA 7 
 
OUTPUT DRIVE:
ISO 5211 F07 (17 mm male square)

MOUNTING:

Universal, ISO 5211 F07

MANUAL OVERRIDE:

Consult factory

LUBRICATION:

Permanent

TEMPERATURE RATING:

-40° F to +150° F (heater required at 0° F. and below).

SHIPPING WEIGHT:

60 Lbs.

SWITCHES:

16 AMP. 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.