Littelfuse, Inc. Relays, Contactors & Transformers - Protection Relays - Resistance Grounding - Series: SE-330HV - SE-330HV-05-01 SE-330HV-05-01

The SE-330HV is a high-voltage neutral-grounding-resistor monitoring relay designed for systems up to 72 kV, providing continuous monitoring of neutral-to-ground resistance and voltage to detect open or shorted grounding resistors and ground faults as low as 100 mA. It features harmonic filtering with Discrete Fourier Transform, programmable Form A and Form C output contacts, an analog 4-20 mA output, and onboard event logging. The unit has a panel or surface mounting style with dimensions of 213 mm height, 98 mm width, and 132 mm depth. It includes a mini USB port for local configuration and supports Ethernet communications via dual SC Fiber interface. Conformal coating is standard, and it is CSA certified, UL Listed (E340889), CE compliant, and RCM certified. The SE-330HV-05-01 is a variant of this series with a 48 Vdc power supply and normally closed contact configuration.