United Automation A447444-HV, HVAC Control, 210A 250A

The United Automation 3 Phase Burst Fire Power Controllers are robust and versatile thyristor stacks, providing precise control of three-phase resistive loads using a two-thirds control technique. These units feature fast pulse zero voltage switching technology, minimizing flicker and eliminating RFI issues. Designed for industrial HVAC systems, furnaces, ovens, and other heating applications, the PR3 series supports both manual and signal input control, with advanced safety features like automatic temperature trips and phase loss detection.

High power ratings
Versatile control options accepts dc signal control
Burst firing technology offers efficient load management and reduces power fluctuations
Thermal protection
Compact design