Littelfuse, Inc. Relays, Contactors & Transformers - Protection Relays - Resistance Grounding - Series: SE-330HV - SE-330HV-23-00 SE-330HV-23-00

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 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 onboard event logging. The unit includes a mini USB port for local configuration and supports optional communications via DeviceNet, IEC 61850, Modbus TCP, or Ethernet/IP with dual RJ45 or fiber interfaces. It is conformally coated, meets CSA and UL standards, and has a 5-year warranty. Dimensions are 213 mm high, 98 mm wide, and 132 mm deep. The product is panel- or surface-mountable.