ABB XT1NU3040AFD000XXX Circuit Breaker, 40A, 3-Pole, 480V

ABB XT1NU3040AFD000XXX Circuit Breaker is built for demanding industrial electrical service, delivering reliable overcurrent protection for three‑phase power systems at 480V. With a 40 A rating and a 3‑pole configuration, this unit ensures balanced protection across all phases, safeguarding motors, transformers, and distribution panels from overloads and electrical faults while helping to minimize downtime in production environments.

Compatibility and fit

Before installation, verify the exact fit by part number and application requirements. The model XT1NU3040AFD000XXX is designed for 480V three‑phase distributions and should be paired with compatible panel boards and bus arrangements. Need help matching a part number or confirming compatibility? Message us and we'll help.

Key features and benefits

• 40 A trip rating provides precise protection for circuits and connected loads, reducing the risk of equipment damage.
• 3-pole design delivers balanced protection across all three phases in a 480V system.
• 480 V operating voltage aligns with standard industrial power distributions for robust, centralized protection.
• Exact part number match ensures electrical compatibility and straightforward replacement in existing panels.
• Rugged ABB build designed to withstand the rigors of industrial environments and long service life.

Ideal applications

• New installations in manufacturing lines and process equipment
• Panel board upgrades and retrofits in 480V, 3‑phase systems
• Maintenance inventory or replacement parts to minimize downtime
• Protection of motor starters, drives, and critical loads within industrial facilities

Technical snapshot

• Amperage: 40 A
• Poles: 3
• Voltage: 480 V
• Part Number: XT1NU3040AFD000XXX
• Product Type: Circuit Breaker