Littelfuse, Inc. SE-330 Series – Neutral-Grounding-Resistor Monitor SE-330-03-01

The SE-330 is a neutral-grounding-resistor and ground-fault monitoring relay that detects open or shorted resistors and ground faults as low as 100 mA using DFT filtering to reject harmonic noise. It provides two programmable Form C and one Form A output contacts, a 4-20 mA analog output, and a pulsing output for fault location. It includes a mini USB port for local setup and an included microSD card for data logging. The unit supports USB and Ethernet (Dual RJ45) communications, is conformally coated, and is CSA certified, UL Listed, CE compliant, and RCM certified. Dimensions are 213 mm high, 98 mm wide, and 132 mm deep, with panel or surface mounting. The SE-330-03-01 variant uses 120/240 Vac/Vdc power and Ethernet (Dual RJ45) communication.