The Square D 600A i-Line HCW panel board 208Y/120V 3PH 4W main breaker 600 amp 208V is a circuit protection device from Square D. 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 600A, 600 Amp. It is commonly in panel builds and electrical system retrofits.
