Square D LAL26300MB Molded Case Circuit Breaker

Square D by Schneider Electric LAL26300MB molded-case circuit breaker is a 600V, 300A two-pole device designed for use as a panel main-breaker in commercial and industrial distribution panels. It provides thermal-magnetic protection for overload and short-circuit conditions. It carries a 22 kA interrupting rating at 600V AC and a 10 kA rating at 250V DC, with lug terminals for secure terminations and a short handle to allow panel doors to close without interference. The MB suffix identifies a panel main-breaker configuration, and the breaker is designed for chassis-mount installation in appropriate enclosures. As part of the LA/Molded Case family, the LAL26300MB combines robust protection with a compact form factor for reliable, code-compliant distribution protection in industrial and commercial spaces. Its chassis-mount design supports integration into standard electrical panels and enclosures, while the thermal-magnetic trip provides reliable selectivity between overload conditions and short circuits.