Ge 100 Amp Breaker NSi 600T-2 Stacked Lug, 600-2 AWG Coax Grounding Block Rated 600 Volts (2000V Max. Per UL486B). UL486A/B Listed. Temperature Rating 90 Degrees C. Mounting Hole Spacing Is Nema Standard Of 1.75. Slang Terms 4-Conductor Aluminum Mechanical Lugs 【Part Number】600T-4, CU9AL, 500 Kcmil-4., 【Specifications】Number Of Conductors/Ports (Main/Primary):4 【High Quality】This product is made from high quality materials for optimum corrosion resistance and longevity. NSI 600T-2 - (2) 600 MCM-2 Stacked Lug Our mission is simple: to provide the best products at the lowest prices, without ever compromising on quality.