This Square D AMP MAIN BREAKER PANELBOARD 600Y/347 v 42 CIRCUIT 3∅ 4W NF442L2C is a circuit protection device manufactured by Square D. It serves as the protective device in an electrical circuit, stopping current flow when a fault is detected. Key specifications noted on this listing include 250 AMP. It is commonly in control panels, switchgear, and machine electrical systems.
