This Square D AMP MAIN BREAKER PANELBOARD 415Y/240 VAC 3Ø 4W 42 CIRCUIT BX339A is a circuit protection device manufactured by Square D. It provides overcurrent protection, breaking the circuit automatically if current exceeds a safe level. Key specifications noted on this listing include 240 VAC, 200 AMP. It is commonly in power distribution panels and industrial control circuits.
