NA330 30A 3P 240V Circuit Breaker, Plug-On | AmpState

Designed for everyday electrical work, the NA330 30A 3P 240V plug-on circuit breaker from AmpState delivers dependable protection for multi‑phase circuits in panelboards, load centers, and electrical distribution systems. Its plug-on design enables quick, tool-free installation and straightforward retrofit projects, especially when a fixed part number must stay consistent across upgrades or maintenance cycles.

Why the NA330 stands out

• Three-pole, 30-amp, 240-volt protection: safeguards three hot legs in 3P 240V systems, ensuring balanced, reliable circuit protection.
• Plug-on simplicity: mounts directly to the bus and snaps into place for faster replacements with minimal panel downtime.
• Ideal for retrofit and maintenance planning: use this same NA330 across multiple installations to simplify stocking and replacements, avoiding part-number churn.
• Panel and distribution readiness: a practical choice for panelboards, load centers, and general electrical distribution where consistent protection is needed.

Ideal use cases

Perfect for retrofit projects where the panel relies on a fixed part number, and for maintenance programs that benefit from keeping a single, compatible breaker on hand. The NA330 excels in 3-phase 240V environments requiring 30A protection across three poles, making it suitable for commercial, industrial, and residential applications that demand dependable circuit interruption.

What you can expect and how we support you

AmpState provides the NA330 with clear identification to simplify sourcing and compatibility checks. If you need help verifying fit against your specific panel model, our team can assist in confirming the correct part match, helping you stay code-compliant and ready for service.

Product specifications

• Part number: NA330
• Manufacturer: Brand Not Specified
• Product type: Circuit Breaker
• Amperage: 30 A
• Poles: 3
• Voltage: 240 V
• Mounting: Plug-On
• Availability: Available from AmpState