This Square D AMP MAIN BREAKER PANELBOARD 3∅ 4W 208Y/120 VAC 42 CIRCUIT 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 120 VAC, 225 AMP. It is commonly in OEM equipment and MRO replacement for electrical protection devices.
