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EGB34040SA | Schneider Electric Square D EGB 40A 3-Pole Molded Case Circuit Breaker Panelview The 3-ANNCPU1 is part ofDescription The Schneider Electric EGB34040SA is a molded case circuit breaker engineered to provide reliable overcurrent and short circuit protection in low voltage electrical distribution systems. It is designed for use in panelboards, switchboards, and industrial control equipment where dependable feeder or branch circuit protection is required. This breaker supports consistent performance in commercial and industrial power applications. Technical