Square D LA36300 I-Line 3-Pole Circuit Breaker

The LA36300 is a 300 A, 3‑pole I‑Line molded‑case circuit breaker from Square D/Schneider Electric, rated for up to 600 V AC. This thermal‑magnetic device provides overload and short‑circuit protection for three‑phase feeders and is designed to mount in I‑Line panelboards and other LA/I‑Line installations. It carries a 22 kA interrupting capacity at 600 VAC and a 250 VDC rating, making it suitable for demanding industrial power distributions where reliable three‑phase protection is required. As part of the LA family, the LA36300 serves as both a main and feeder breaker within compatible Square D I‑Line systems, offering a compact, field‑installable solution that integrates with I‑Line bus arrangements for scalable protection in commercial and light manufacturing environments.