Littelfuse, Inc. Relays, Contactors & Transformers - Protection Relays - Resistance Grounding - Series: SE-330HV - SE-330HV-08-01 SE-330HV-08-01

The SE-330HV is a high-voltage neutral-grounding-resistor monitoring relay designed for applications up to 72 kV, providing continuous detection of open or shorted neutral-grounding resistors and ground-fault currents as low as 100 mA using Discrete Fourier Transform filtering to prevent false trips from harmonic noise. It features two programmable Form C and one programmable Form A output contacts, analog 4-20 mA output, on-board event recording, and optional communication protocols including IEC 61850 with dual SC Fiber interface. The unit has conformal coating for environmental protection, panel or surface mounting, and is CSA certified, UL listed, CE marked, and RCM compliant. Its dimensions are 213 mm H × 98 mm W × 132 mm D.