Enhances the overall safety and performance of AERCO hydronic systems

For technicians performing hydronic heating repairs

60Hz single-phase motor draws 1

Reliable Starting: Designed for 230V single phase operation with high starting torque capabilities

Siemens Industrial Controls 3UG5616-1CR20 Relay 320788-704 Enhances the overall safety andThe Siemens SIRIUS 3UG5616 1CR20 is a high performance phase monitoring relay designed for precise diagnostics in industrial and HVACR environments. This digitally adjustable voltage monitoring relay provides comprehensive oversight for 3 phase systems, tracking phase sequence, failure, asymmetry, and frequency monitoring across a wide operating range of 90 to 690 V AC. As a successor to the legacy 3UG4 series, it incorporates an intuitive LCD display