The Eaton NSB U3R1121BCRCH is a ring-type meter socket rated for 100 A at 600 V, configured for single-phase service with three positions and three-wire connections. As part of Eaton’s NSB line, it provides a mounting interface designed to accept compatible energy meters in 1‑phase, 3‑wire installations. This model specifies a 100 A current rating, 600 V maximum, and a 3‑wire, 3‑position configuration.
