Littelfuse, Inc. Relays, Contactors & Transformers - Protection Relays - Resistance Grounding - Series: SE-330HV - SE-330HV-04-01 SE-330HV-04-01

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 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, an analog 4-20 mA output, and supports IEC 61850, EtherNet/IP, and Modbus TCP communications via dual RJ45 or SC Fiber interfaces. The unit includes a microSD card for data logging, a mini USB port for local communication, and is conformally coated for environmental protection. It is CSA certified, UL listed, CE marked, and RCM compliant. Dimensions are 213 mm high, 98 mm wide, and 132 mm deep. The relay is rated for panel or surface mounting and includes a 5-year warranty.