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Powermite 599
Technical Instructions
Document No. 155-682
October 2, 2017
MT Series SAS Electronic
Valve Actuator 24 Vac or 24 Vdc,
Proportional Control
SAS61.03U
SAS61.33U
Siemens Industry, Inc.
Description
The Powermite 599 MT Series SAS Electronic Valve Actuator requires a 24 Vac or
24 Vdc supply and receives a 0 to 10 Vdc or a 4 to 20 mA control signal to
proportionally control a valve. This actuator is designed to work with Powermite 599
MT Series terminal unit valve with a 7/32-inch (5.5 mm) stroke.
Features
• Position indicator.
• UL listed for plenum installations.
• 0 to 10V or 4 to 20 mA.
• LED status indicator.
• Auto calibration
• Position output signal 0 to 10 Vdc.
• Manual positioning knob with stroke indication allows for repositioning.
• Mechanical spring returns the valve to its normal (fail-safe) position in power-off
conditions (SAS61.33U Actuator only).
Application
For use in small to medium HVAC installations with Powermite 599 Series terminal unit
valves with a 7/32-inch (5.5 mm) stroke requiring a minimum of 90 pounds force
(400N). They can be used in liquid and low pressure steam service applications.
Table 1. Ordering Information.
Product Numbers
Product Number Actuator type Actuator Prefix Code
SAS61.03U Non-Spring Return (Fail-in-place) 364
SAS61.33U Spring Return (Fail-safe) 365
Ordering
Information
To order a complete valve plus actuator assembly from the factory, combine the
actuator prefix code with the suffix of the valve product number. See TB 251
Powermite 599 Series MT Series Terminal Unit Valve and Actuator Assembly
Selections Technical Bulletin (155-306P25) for selection procedures.
To order an actuator only, use the product number in Table 1.

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