Square D EJB36045 45A 3-Pole 347 V Circuit Breaker

Meet the Square D EJB36045 45A 3-Pole 347 V Circuit Breaker — a genuine Square D replacement designed to guard three-phase circuits in demanding commercial and light industrial environments. With a 45-amp protective rating across three poles and a 347-volt operating capability, this breaker preserves uptime while safeguarding equipment from overloads and short circuits.

• Key specs at a glance: Part Number EJB36045, current rating 45 A, 3-Pole, voltage rating 347 V.
• Where it fits: Ideal for 3-phase distribution panels in commercial buildings, feeders for motors and HVAC equipment, and lighting/control circuits that run on 347 V systems. This makes it a practical replacement in facilities that rely on reliable 347 V multi-pole protection.
• Why it stands out: As an authentic Square D component, it ensures compatible mounting, precise trip performance, and consistent electrical protection with the original installation. This isn't a generic part—it's built to match the expectations of your panel and wiring diagrams.
• Installation & compatibility tips: Confirm that your panel accepts an EJB36045 direct replacement. Check mounting style and bus connection to ensure a seamless swap in a compatible Square D enclosure. Follow proper safety procedures and lockout/tagout protocols during replacement.
• Real-world benefits: By using a three-pole breaker rated for 347 V, you can confidently protect three-phase motors, AC units, and lighting circuits from overcurrent, reducing the risk of damage and unscheduled downtime. The unified trip across all three phases helps prevent phase imbalances and equipment stress.

Whether you're upgrading an aging panel or stocking spare parts for maintenance, the Square D EJB36045 45A 3-Pole 347 V Circuit Breaker delivers dependable, industry-standard protection where it matters most.