Siemens LGB3B090BU is a three-pole circuit breaker rated for 90 A in 480 V three-phase electrical systems. The model designation LGB3B090BU identifies a 3P Siemens protection device intended to interrupt fault currents on three‑phase distributions. Designed for industrial and commercial power networks operating at up to 480 V, this breaker provides reliable overcurrent protection for connected equipment and wiring within the specified voltage and current ratings.
