The NPR530 microcomputer protection and measurement device is suitable for small current grounding systems with voltage levels of 10kV and below. It can be used as a general protection for incoming and outgoing lines, factory transformers, motors, and capacitors.

NPR530-U1T microcomputer comprehensive protection device: suitable for incoming cabinets and feeder cabinets
NPR530-B1T microcomputer backup automatic switching protection device: suitable for two power supply incoming lines and busbar cabinets
NPR530-PTT microcomputer protection device: suitable for detecting and paralleling PT cabinets and two groups of PTs