Littelfuse, Inc. Relays, Contactors & Transformers - Protection Relays - Resistance Grounding - Series: SE-330HV - SE-330HV-01-01 SE-330HV-01-01

The SE-330HV is a high-voltage neutral-grounding-resistor monitoring relay designed for applications up to 72 kV, providing continuous monitoring of neutral-to-ground resistance, current, and voltage to detect open or shorted grounding resistors and ground faults as small as 100 mA. It features Discrete Fourier Transform filtering to prevent false trips from harmonic noise, programmable Form A and Form C output contacts, analog 4-20 mA output, on-board event logging, and conformal coating for environmental protection. The unit supports USB communication, with optional DeviceNet, IEC 61850, Ethernet/IP, and Modbus TCP. It is mounted on a panel or optionally as a surface mount, measures 213 mm H x 98 mm W x 132 mm D, and is CSA certified, UL Listed, CE compliant, and RCM approved. The SE-330HV shares all core features of the SE-330 series but is rated for higher voltage systems.