Square D LAL36300-8041 LAL363008041 - 300A 3 Pole Molded Case Circuit Breaker

The -8041 suffix indicates that the breaker comes with factory-installed control wire tapped lugs on both the line and load sides. This allows you to easily connect control power circuits directly at the breaker terminals.

No, they have different mounting styles. The LAL36300-8041 is a unit-mount, feed-thru breaker with line and load lugs. The LA36300 is an I-Line breaker designed to plug directly into a Square D I-Line panelboard bus.

This is a unit-mount circuit breaker. It bolts directly to the backpan or mounting plate of a Square D industrial enclosure, switchboard, or motor control center, rather than plugging onto a busbar.

Yes, the included lugs support parallel runs. You can terminate up to two 1 AWG to 250 kcmil aluminum or copper conductors per phase, or a single 1 AWG to 600 kcmil conductor.

The LI designation means the thermal-magnetic trip unit provides Long-Time (L) and Instantaneous (I) protection. The long-time function protects against sustained overloads, while the instantaneous function protects against short circuits.

The thermal (long-time) trip function is fixed at 300A, but the magnetic (instantaneous) trip setting is adjustable. This allows you to fine-tune the short-circuit protection to coordinate with other devices in your system.

Yes, the factory-installed lugs are dual-rated for both aluminum (Al) and copper (Cu) conductors. Ensure you apply a listed oxide inhibitor when terminating aluminum wire to prevent corrosion and maintain a secure connection.

No. For safety and to comply with standard electrical practices, you should always de-energize the circuit breaker and follow proper lockout/tagout (LOTO) procedures before adjusting the instantaneous magnetic trip dial.