The Siemens AMP MAIN BREAKER SWITCHBOARD 480Y/277 VAC 3∅ 4W is a circuit protection device from Siemens. It safeguards wiring and connected equipment by opening or isolating the circuit when current exceeds its rated threshold. Key specifications noted on this listing include 277 VAC, 1600 AMP. It is commonly in control panels, switchgear, and machine electrical systems.
