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NGR Systems From Littelfuse are now Available!

Standardized Littelfuse Neutral-Grounding Resistor (NGR) systems are now available! The Littelfuse NGR System is a neutral grounding resistor, current transformer, and sensing resistor installed in a NEMA 3R enclosure used to high-resistance ground transformers and generators. The NGR system is designed for use with Littelfuse Neutral Grounding Resistor Monitors for complete system grounding and grounding protection. Prevent many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems. Limit point-of-fault damage, eliminate transient overvoltages, reduce the arc-flash hazards, limit voltage exposure to personnel, and provide adequate tripping levels for selective current-based ground-fault detection and coordination. Contact your Electra Sales of Oklahoma or Texas representative or visit Littelfuse online at


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