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Indelac AS6 Spring Failsafe Electric Actuator, 600 in-lb Torque

Original price $5,967.00
Current price $5,262.00

Indelac AS6 Spring Failsafe Electric Actuator, 600 in-lb Torque.

*Price is for AS6 Actuator only.  Does not include valve or custom mounting kit shown in pictures.


AS6 Data Sheet


Quick Specs:

  • Model Number:  AS6-4XB-12FCMHHT
  • Series:  AS6 Series
  • Manufacturer:  Indelac Controls
  • Made in USA
  • Includes:  Decluchable manual override, internal thermostat and heater, dome position indicator
Output Torque: 600 Ln-In (67.8 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: Maximum of 4 auxiliary switches, declutching manual override gearbox with handwheel, NEMA 4X and/or 7 enclosure, compartment heater, heater and thermostat and breather


Model AS6 electric spring return actuator is a robust heavy-duty actuator recommended for systems requiring as many as 74 cycles per day (27,000 annually). AS6 has a spring end torque of 600 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 440 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.


Spring return electric actuators from Indelac Controls Inc. (ICI) are specially designed for fail-safe applications using quarter-turn valves and dampers. Our spring return electric actuators are equipped with a hardened steel spur and helical gear drive train to guarantee reliable protection against catastrophic process failure during  of the electricity to the system. Internal components are permanently lubricated at our manufacturing facilities, ensuring high efficiencies between moving parts, minimal routine maintenance, and quiet operation throughout the life of the actuator.

All standard equipment is enclosed in a heavy-duty aluminum enclosure with a thermally bonded ultraviolet resistant polyester powder coating to comply with NEMA 4 requirements for protection against ingress of water, dust, and dirt. Optional enclosures are available to meet or exceed the NEMA 4X and NEMA 7 specifications for safe and efficient operation in corrosive, ignitable, or explosive environments. Epoxy coatings are available to protect against caustic wash-downs, additional coating options are available upon request.

To ensure compatibility with a wide range of applications, ICI’s spring return actuators are available in six different models with various specifications and end torque capabilities (up to a maximum of  pounds).

Unlike pneumatic spring return actuators, spring return electric actuators must be powered to the open position and powered to the closed position during  operation to maximize the life of the product. The spring return  functionality is for use during power failure only.

Our actuator units have been designed to provide accurate control and reliable fail-safe automation capabilities while also striking a balance between cost-effectiveness and durability.