NEF431045R | Circuit Breaker | 45A | 3-Pole | 480V

Meet the NEF431045R Circuit Breaker — a rugged, industrial-grade solution designed for maintenance, retrofit, and replacement projects where exact specifications matter. With a 45A rating, 3-pole configuration, and 480V operating voltage, this breaker provides dependable overcurrent protection for three-phase systems across demanding environments.

Key specifications

• Amperage: 45A
• Poles: 3-Pole
• Voltage: 480V
• Part number: NEF431045R
• Use case: Industrial circuit protection for maintenance, retrofit, and replacement where exact specs are required

Why this breaker stands out

• Three-phase protection: The 3-pole design ensures balanced safeguarding of all phases in your 480V system, essential for motors, drives, and panelboards.
• Spec-driven compatibility: The part number NEF431045R serves as the most reliable reference for fit and compatibility, helping you avoid mismatches in critical installations.
• Industrial-grade reliability: Built for demanding environments, it’s ready to handle the recurring operations and maintenance cycles common in manufacturing floors and data centers.

Ideal use cases

Perfect for upgrading or replacing breakers in three-phase equipment such as CNC machines, conveyors, HVAC systems, pumps, and other heavy-duty motors operating at 480V. It’s a practical choice for panelboards in manufacturing facilities where space, performance, and reliability matter.

Installation and compatibility tips

• Always confirm fit and ratings before ordering — use the part number NEF431045R as your primary compatibility reference.
• Verify that the panel and busbar configuration match a 3-pole, 480V protection scheme.
• Follow proper lockout/tagout procedures during installation or replacement to ensure a safe, serviceable panel.

What problems does it solve?

By delivering precise current protection at 480V for three-phase systems, the NEF431045R helps prevent motor burnout, equipment damage, and unexpected downtime. It’s a targeted, maintainable solution for environments where panel upgrades or component replacements must align exactly with existing electrical architecture.