Square D LAL36300 is a 3‑pole molded‑case circuit breaker from Schneider Electric’s I‑Line family, rated for 300 A at 600 V AC and designed for cable‑in/cable‑out panel mains. It delivers thermal‑magnetic protection against overloads and short circuits, with a 22 kA interrupting rating at 600 V AC; the MB suffix variant indicates a panel‑main breaker with a shorter handle to accommodate a closed panel door. The unit is HACR‑rated and RoHS/REACH compliant, suitable for industrial or commercial distribution panels where a robust, high‑current main protection device is required.
