Siemens SSC81U Valve Actuator

The Siemens SSC81U Valve Actuator is a reliable, automation-ready solution for precise valve control in heating and cooling systems. This direct coupled, electro-mechanical valve actuator features spring-return operation and runs on 24 Volt AC, delivering dependable performance across commercial HVAC installations.

With a NEMA 1 enclosure, it is designed for indoor environments and accepts a plenum cable or 3/8 inch flexible conduit for easy wiring. The actuator delivers a stroke of 7/32 inch with a nominal thrust of 67 pounds, enabling accurate position control. Rated for 50/60 Hz and a 0.8 VA power draw, it pairs with UL, CUL, and CE approvals for safe, compliant operation in MT Valve applications. Operating temperatures range from 41 to 122 degrees Fahrenheit, making it suitable for a variety of climates. The powered supply is earth-ground isolating and Class 2, using a 24 Volt AC transformer to ensure safe integration with standard HVAC control networks.

• Direct coupled design for robust, low-maintenance operation
• Electro-mechanical, spring-return actuator for safe default position
• 24V AC power with earth-ground isolating, Class 2 transformer
• NEMA 1 enclosure suitable for indoor applications
• Stroke 7/32 in and nominal 67 lb thrust for precise control
• UL, CUL, CE listed for certified safety and compliance
• Plenum cable or 3/8" conduit wiring options for flexible installation