Siemens Building Technology SSD61.5U Actuator
The Siemens SSD61.5U is a high-performance 0-10Vdc electronic valve actuator engineered for precise proportional control in HVAC applications. Designed for seamless integration with 1/2-inch to 1-1/4-inch Pressure Independent Control Valves (PICV), this unit delivers a nominal force of >56 lbs (250N) to ensure reliable operation in chilled and hot water systems. A critical feature of the SSD61.5U is its spring return fail-safe mechanism, which automatically returns the valve to its normal position (stem up/fail open) during power loss, protecting terminal units from stagnation or overheating.
This 24V proportional actuator simplifies field commissioning with built-in automatic stroke calibration, which writes parameters to non-volatile memory on the first start-up. For veteran technicians, the direct-coupled installation allows for hand-tightened mounting without specialized tools, saving valuable man-hours on the job site. The housing is UL listed for plenum installation (NEMA 1), making it suitable for fan coil units, VAV systems, and reheat coils where safety codes are stringent.
Key Benefits for Contractors:- Fail-Safe Protection: Reliable mechanical spring return ensures the system remains in a safe state (fail open) during electrical failures.
- Intelligent Calibration: The Siemens SSD61.5U automatically adapts to valve strokes (2.5 mm, 5 mm, or 5.5 mm) for consistent flow regulation.
- Reduced Tooling: Direct-coupled design and manual override with a 3 mm hex key facilitate rapid installation and troubleshooting.
- Energy Efficiency: Optimized for lower power consumption (2 VA) in holding positions, reducing the load on 24V HVAC transformers.
Can I use the SSD61.5U on a valve it wasn't originally calibrated to?
Yes, but you must manually clear the non-volatile memory first. Access the circuit board by removing the terminal cover and use a flat-blade screwdriver to briefly short the bars while powered to trigger a new calibration cycle.
Is this actuator compatible with 24Vdc power?
While the non-spring return version (SSD61U) accepts 24Vdc, the SSD61.5U spring return model is designed for 24Vac operation to power the capacitor-driven fail-safe mechanism.
What happens if I apply power without a valve connected?
The actuator will extend to its maximum limit and stop responding. You will need to disconnect power, use a 3 mm hex key to retract the shaft to the 0 position, mount it to the valve, and reapply power to restore normal function.
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.
Original: $192.84
-65%$192.84
$67.49Siemens Building Technology SSD61.5U Actuator
The Siemens SSD61.5U is a high-performance 0-10Vdc electronic valve actuator engineered for precise proportional control in HVAC applications. Designed for seamless integration with 1/2-inch to 1-1/4-inch Pressure Independent Control Valves (PICV), this unit delivers a nominal force of >56 lbs (250N) to ensure reliable operation in chilled and hot water systems. A critical feature of the SSD61.5U is its spring return fail-safe mechanism, which automatically returns the valve to its normal position (stem up/fail open) during power loss, protecting terminal units from stagnation or overheating.
This 24V proportional actuator simplifies field commissioning with built-in automatic stroke calibration, which writes parameters to non-volatile memory on the first start-up. For veteran technicians, the direct-coupled installation allows for hand-tightened mounting without specialized tools, saving valuable man-hours on the job site. The housing is UL listed for plenum installation (NEMA 1), making it suitable for fan coil units, VAV systems, and reheat coils where safety codes are stringent.
Key Benefits for Contractors:- Fail-Safe Protection: Reliable mechanical spring return ensures the system remains in a safe state (fail open) during electrical failures.
- Intelligent Calibration: The Siemens SSD61.5U automatically adapts to valve strokes (2.5 mm, 5 mm, or 5.5 mm) for consistent flow regulation.
- Reduced Tooling: Direct-coupled design and manual override with a 3 mm hex key facilitate rapid installation and troubleshooting.
- Energy Efficiency: Optimized for lower power consumption (2 VA) in holding positions, reducing the load on 24V HVAC transformers.
Can I use the SSD61.5U on a valve it wasn't originally calibrated to?
Yes, but you must manually clear the non-volatile memory first. Access the circuit board by removing the terminal cover and use a flat-blade screwdriver to briefly short the bars while powered to trigger a new calibration cycle.
Is this actuator compatible with 24Vdc power?
While the non-spring return version (SSD61U) accepts 24Vdc, the SSD61.5U spring return model is designed for 24Vac operation to power the capacitor-driven fail-safe mechanism.
What happens if I apply power without a valve connected?
The actuator will extend to its maximum limit and stop responding. You will need to disconnect power, use a 3 mm hex key to retract the shaft to the 0 position, mount it to the valve, and reapply power to restore normal function.
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.
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Description
The Siemens SSD61.5U is a high-performance 0-10Vdc electronic valve actuator engineered for precise proportional control in HVAC applications. Designed for seamless integration with 1/2-inch to 1-1/4-inch Pressure Independent Control Valves (PICV), this unit delivers a nominal force of >56 lbs (250N) to ensure reliable operation in chilled and hot water systems. A critical feature of the SSD61.5U is its spring return fail-safe mechanism, which automatically returns the valve to its normal position (stem up/fail open) during power loss, protecting terminal units from stagnation or overheating.
This 24V proportional actuator simplifies field commissioning with built-in automatic stroke calibration, which writes parameters to non-volatile memory on the first start-up. For veteran technicians, the direct-coupled installation allows for hand-tightened mounting without specialized tools, saving valuable man-hours on the job site. The housing is UL listed for plenum installation (NEMA 1), making it suitable for fan coil units, VAV systems, and reheat coils where safety codes are stringent.
Key Benefits for Contractors:- Fail-Safe Protection: Reliable mechanical spring return ensures the system remains in a safe state (fail open) during electrical failures.
- Intelligent Calibration: The Siemens SSD61.5U automatically adapts to valve strokes (2.5 mm, 5 mm, or 5.5 mm) for consistent flow regulation.
- Reduced Tooling: Direct-coupled design and manual override with a 3 mm hex key facilitate rapid installation and troubleshooting.
- Energy Efficiency: Optimized for lower power consumption (2 VA) in holding positions, reducing the load on 24V HVAC transformers.
Can I use the SSD61.5U on a valve it wasn't originally calibrated to?
Yes, but you must manually clear the non-volatile memory first. Access the circuit board by removing the terminal cover and use a flat-blade screwdriver to briefly short the bars while powered to trigger a new calibration cycle.
Is this actuator compatible with 24Vdc power?
While the non-spring return version (SSD61U) accepts 24Vdc, the SSD61.5U spring return model is designed for 24Vac operation to power the capacitor-driven fail-safe mechanism.
What happens if I apply power without a valve connected?
The actuator will extend to its maximum limit and stop responding. You will need to disconnect power, use a 3 mm hex key to retract the shaft to the 0 position, mount it to the valve, and reapply power to restore normal function.
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.
