Comprising GRE1 grid resistors in weatherproof, IP23-rated enclosures with high voltage insulation, Milwaukee Resistors NGR series combines line-neutral (1.39–8 kV) and system (2.4–13.8 kV) voltages with performance to +760°C. Drop-in replacement solutions provide ground fault, overvoltage, and short circuit protection for generators and transformers in wye (star) configurations. Current ratings range from 100–1,000 A, and resistance ranges from 1.39–80 Ω with tolerance of ±10%.