Siemens Building Technology 656-600 Valve Actuator 320735-701 What does the NEMA 4

What does the NEMA 4 rating signify for this part

Thermal Resilience: Fabricated from high-grade materials to withstand consistent high-temperature exposure without degrading or losing compression

Using incorrect voltage will result in immediate failure of the electronic control module

Flexible Power: Designed for 24VAC/DC installations standard in commercial mechanical systems

Siemens Building Technology 656-600 Valve Actuator 320735-701 What does the NEMA 4The Siemens 656 600 is a heavy duty pneumatic valve actuator replacement top designed for seamless integration with Siemens Powermite series valves. This replacement actuator with trim is engineered for 3 4" line sizes and features a normally open (NO) fail safe position, ensuring the valve remains open upon loss of control air. Built for precision in pneumatic HVAC controls, the 656 600 operates on a standard 3 8 psi spring range, providing reliable