Siemens Building Technology SAS81.33U Actuator
The Siemens SAS81.33U Actuator is a 24V electronic motor-driven valve actuator engineered specifically for the Powermite 599 MT Series valves. This 3-position floating control actuator features a critical mechanical spring return (fail-safe) function, ensuring that the valve returns to its normal position during a power loss event. With a 5.5 mm (7/32-inch) stroke and a rapid 30-second run time, the Siemens SAS81.33U provides precise modulation for water and steam applications in heating, ventilation, and air conditioning systems. The unit integrates a DC 0–10 V position feedback signal, allowing building automation systems to monitor actual stroke position in real time. Its robust IP54-rated housing allows for flexible mounting orientations, from upright to horizontal, making it a reliable solution for tight mechanical room configurations.
Key Benefits for HVAC Professionals
- Fail-Safe Reliability: The integrated spring return mechanism ensures the system reverts to a safe state during power interruptions.
- Direct Mount Integration: Seamlessly installs on Powermite 599 series MT valves without the need for complex linkages.
- Precise Feedback: The DC 0-10V feedback signal provides accurate valve positioning data for advanced BAS trending and troubleshooting.
- Low Power Consumption: Efficient 4.6 VA operation reduces the load on 24V control transformers in large-scale deployments.
- Environmental Rating: IP54 protection ensures performance in demanding environments with dust or splashing water.
Common Questions
Is the Siemens SAS81.33U compatible with 120V systems?
No, this is a 24 VAC/DC actuator. Attempting to power it with line voltage will damage the internal electronics. Always verify transformer capacity before installation.
What is the difference between the SAS81.33U and the SAS61 series?
The SAS81.33U utilizes a 3-position (floating) signal, whereas the SAS61 series typically uses a 0-10V DC proportional signal. Ensure your controller’s output matches the actuator’s control logic.
Can I manually override the actuator position?
Yes, the unit features a manual adjuster. Note that once power is restored or the spring return is engaged, the actuator will return to its commanded or fail-safe position.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Building Technology SAS81.33U Actuator
The Siemens SAS81.33U Actuator is a 24V electronic motor-driven valve actuator engineered specifically for the Powermite 599 MT Series valves. This 3-position floating control actuator features a critical mechanical spring return (fail-safe) function, ensuring that the valve returns to its normal position during a power loss event. With a 5.5 mm (7/32-inch) stroke and a rapid 30-second run time, the Siemens SAS81.33U provides precise modulation for water and steam applications in heating, ventilation, and air conditioning systems. The unit integrates a DC 0–10 V position feedback signal, allowing building automation systems to monitor actual stroke position in real time. Its robust IP54-rated housing allows for flexible mounting orientations, from upright to horizontal, making it a reliable solution for tight mechanical room configurations.
Key Benefits for HVAC Professionals
- Fail-Safe Reliability: The integrated spring return mechanism ensures the system reverts to a safe state during power interruptions.
- Direct Mount Integration: Seamlessly installs on Powermite 599 series MT valves without the need for complex linkages.
- Precise Feedback: The DC 0-10V feedback signal provides accurate valve positioning data for advanced BAS trending and troubleshooting.
- Low Power Consumption: Efficient 4.6 VA operation reduces the load on 24V control transformers in large-scale deployments.
- Environmental Rating: IP54 protection ensures performance in demanding environments with dust or splashing water.
Common Questions
Is the Siemens SAS81.33U compatible with 120V systems?
No, this is a 24 VAC/DC actuator. Attempting to power it with line voltage will damage the internal electronics. Always verify transformer capacity before installation.
What is the difference between the SAS81.33U and the SAS61 series?
The SAS81.33U utilizes a 3-position (floating) signal, whereas the SAS61 series typically uses a 0-10V DC proportional signal. Ensure your controller’s output matches the actuator’s control logic.
Can I manually override the actuator position?
Yes, the unit features a manual adjuster. Note that once power is restored or the spring return is engaged, the actuator will return to its commanded or fail-safe position.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Siemens SAS81.33U Actuator is a 24V electronic motor-driven valve actuator engineered specifically for the Powermite 599 MT Series valves. This 3-position floating control actuator features a critical mechanical spring return (fail-safe) function, ensuring that the valve returns to its normal position during a power loss event. With a 5.5 mm (7/32-inch) stroke and a rapid 30-second run time, the Siemens SAS81.33U provides precise modulation for water and steam applications in heating, ventilation, and air conditioning systems. The unit integrates a DC 0–10 V position feedback signal, allowing building automation systems to monitor actual stroke position in real time. Its robust IP54-rated housing allows for flexible mounting orientations, from upright to horizontal, making it a reliable solution for tight mechanical room configurations.
Key Benefits for HVAC Professionals
- Fail-Safe Reliability: The integrated spring return mechanism ensures the system reverts to a safe state during power interruptions.
- Direct Mount Integration: Seamlessly installs on Powermite 599 series MT valves without the need for complex linkages.
- Precise Feedback: The DC 0-10V feedback signal provides accurate valve positioning data for advanced BAS trending and troubleshooting.
- Low Power Consumption: Efficient 4.6 VA operation reduces the load on 24V control transformers in large-scale deployments.
- Environmental Rating: IP54 protection ensures performance in demanding environments with dust or splashing water.
Common Questions
Is the Siemens SAS81.33U compatible with 120V systems?
No, this is a 24 VAC/DC actuator. Attempting to power it with line voltage will damage the internal electronics. Always verify transformer capacity before installation.
What is the difference between the SAS81.33U and the SAS61 series?
The SAS81.33U utilizes a 3-position (floating) signal, whereas the SAS61 series typically uses a 0-10V DC proportional signal. Ensure your controller’s output matches the actuator’s control logic.
Can I manually override the actuator position?
Yes, the unit features a manual adjuster. Note that once power is restored or the spring return is engaged, the actuator will return to its commanded or fail-safe position.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
