Square D MHL366001288 U Molded Case Circuit Breaker

The Square D / Schneider Electric MHL366001288 U is a three‑pole molded‑case circuit breaker from the MHL family, rated for 600 A at 480 V AC, designed to protect feeders and branch circuits in industrial power distribution panels. The MHL frame uses a thermal‑magnetic trip mechanism with a non‑interchangeable trip unit, and line and load terminals are standard for this series, making it suitable for rugged industrial installations. This 600 A, 480 V, 3P MCCB is typically chosen to isolate and protect large feeders or motor circuits where reliable overcurrent protection is required. The MHL36600 family data indicate a 600 A rating at 40°C ambient, aligning with the high‑current protection this model provides. The U suffix identifies the unit’s package variant within the MHL line, and these breakers are commonly sourced from Schneider Electric through official distributors and authorized retailers.