Littelfuse, Inc. Relays, Contactors & Transformers - Protection Relays - Resistance Grounding - Series: SE-330HV - SE-330HV-28-01 SE-330HV-28-01

The SE-330HV is a high-voltage neutral-grounding-resistor monitor designed for applications up to 72 kV, providing continuous monitoring of neutral-to-ground resistance, current, and voltage to detect open or shorted resistors and ground faults as low 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, and on-board event logging. The unit supports IEC 61850 communication via dual SC Fiber and RJ45 interfaces, includes a mini USB port for local configuration, and has conformal coating for environmental protection. It measures 213 mm high, 98 mm wide, and 132 mm deep, and is CSA certified, UL Listed, CE marked, and RCM compliant.