Square D A1L350 U Molded Case Circuit Breaker

The Square D A1L350U Molded Case Circuit Breaker is a 3-pole, 50-amp protective device rated for 120 volts, designed to interrupt fault currents and safeguard electrical distribution circuits. This molded case breaker from Square D (Schneider Electric) is used to protect branch circuits in panelboards and distribution assemblies, particularly in applications requiring three‑phase protection at 120 V. The catalog number A1L350U uniquely identifies this unit within the Square D lineup, confirming its 50 A rating, 120 V operation, and 3-pole configuration. As with other Square D MCCBs, it provides overcurrent protection for low‑voltage electrical systems, helping ensure safe and reliable operation of connected loads in commercial and light industrial environments.