Square D 3106340057U Three-Phase Circuit Breaker 480V

Square D 3106340057U is a three‑phase circuit breaker rated for 480V AC, configured as a 3‑pole protective device for industrial and commercial electrical distributions. Manufactured under Square D, a Schneider Electric brand, it is designed to interrupt fault currents in 480V three‑phase networks and protect downstream feeders and equipment from overloads. The 3106340057U part number identifies a specific Square D breaker intended for use with compatible Square D panelboards and distribution gear that require 480V three‑phase protection, making it suitable for applications in manufacturing facilities, data centers, and other facilities with 480V services.