Must Have Siemens FJ63A150 – 150A 3 Pole Motor Circuit Protector

Engineered for F-Frame panelboards, the Siemens FJ63A150 safeguards industrial motor circuits against short circuits. Utilizing an ETI magnetic-only trip unit, it provides an adjustable instantaneous response between 800A and 1500A. This 3-pole, 150-amp bolt-on breaker integrates seamlessly with Siemens P1, P2, and P3 panelboards, alongside legacy I-T-E systems. With an 18 kAIC rating at 600VAC, it ensures robust performance for heavy-duty commercial applications.