The Cutler-Hammer EATON KD3400F 3 pole 400 AMP breaker frame KT3400T 35K w/Bus ties is a circuit protection device from Cutler-Hammer. It provides overcurrent protection, breaking the circuit automatically if current exceeds a safe level. Key specifications noted on this listing include 400 AMP, 3 Pole. It is commonly in power distribution panels and industrial control circuits.
