Industrial NB221045 45A 2-Pole 240 V Circuit Breaker

Industrial NB221045 45A 2-Pole 240 V Circuit Breaker is a dependable overcurrent protector built for demanding commercial and manufacturing environments. Carved from rugged design, this part delivers reliable performance in panels and feeders that run on 240 V supplies, helping keepFacility electrical systems safe and downtime minimal.

Designed around a compact 2-pole configuration, it disconnects both hot legs simultaneously when overload or short-circuit conditions occur. That means you get balanced protection for 240 V circuits and reduced risk of hidden faults that could compromise equipment integrity or personnel safety. With a 45 A rating, this breaker is well-suited for mid-range motors, heaters, control circuits, and other 240 V loads typical in industrial settings.

Part Number NB221045 identifies a purpose-built breaker that emphasizes straightforward replacement and consistent performance within industrial distribution schemes. Its dedicated current rating and two-pole structure make it a reliable choice for installations where clear, unambiguous protection is essential and downtime due to nuisance trips is minimized.

Ideal applications

• Branch circuits feeding 240 V machinery, conveyors, pumps, and fans in factories and warehouses
• Feeder lines to subpanels within industrial control rooms or equipment yards
• Motor control circuits and heating equipment that require reliable, dual-line disconnection

Why this 2-Pole 240 V breaker stands out

• Explicitly rated for 240 V operation with a 45 A capacity, providing clear protection aligned to typical industrial loads
• Two-pole design ensures simultaneous disconnection of both conductors, improving safety and fault clearing effectiveness
• Part NB221045 offers a transparent identification for inventory management and quick part replacement
• Durable construction designed to endure the vibrations and temperature variations common in industrial environments

Practical guidance for use

• Match the current rating to the continuous-load current of the 240 V circuit to prevent nuisance trips while protecting wiring and equipment
• Confirm that the circuit breaker is appropriate for your panel or distribution setup and is compatible with your installation practices
• Keep NB221045 on hand as a ready replacement part to minimize downtime during maintenance or fault recovery
• Use as part of a broader overcurrent protection strategy that includes proper wiring sizing and enclosure protection

In short, the Industrial NB221045 45A 2-Pole 240 V Circuit Breaker delivers dependable, straightforward protection for 240 V industrial circuits. If you’re organizing spare parts for an active facility, this part provides a clear, purpose-built solution that supports safe operation, faster maintenance, and reliable protection for a wide range of mid-range 240 V loads.