Eaton NB3800P - 800 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Eaton NB3800P is a high-capacity molded case circuit breaker designed to protect branch circuits and power distribution equipment with precision and reliability. Rated at 800 A and 600 V, this 3-pole device is built to stand up to demanding residential, commercial, and light industrial environments, providing dependable overcurrent and short-circuit protection in panelboards and loadcenters.

Key features that matter in real-world setups

• Compact molded case design maximizes panel space without compromising protection, making it easier to fit high-current circuits into compact panelboards and loadcenters.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance by responding to both overload and instantaneous short-circuit currents, helping prevent nuisance trips and equipment damage.
• OEM-compatible with matching loadcenters and panelboards to ensure straightforward replacements and seamless system integration within Eaton ecosystems and compatible panel lines.
• 3-pole configuration for 3-phase protection ideal for commercial and light-industrial power distribution, while supporting residential applications that require robust three-phase protection where applicable.
• High-current capability 800 A rating supports substantial branch circuits and feeders, reducing the need for multiple breakers in some installations.

Why the NB3800P stands out

Unlike generic substitutes, the NB3800P is purpose-built for Eaton panelboard ecosystems, delivering predictable trip performance and tight integration with OEM loadcenters. This makes it an excellent choice for projects where reliability, ease of maintenance, and compatibility matter just as much as amperage and voltage. The 600 V rating matches a wide range of commercial and industrial equipment, giving you confidence that the protection device can keep up with today’s demanding electrical loads.

Technical snapshot

• Manufacturer: Eaton
• Part number: NB3800P
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 800 A
• Voltage rating: 600 V
• Number of poles: 3
• Applications: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

Ideal uses and practical guidance

Designed for environments where high-current protection is essential, the NB3800P is well-suited for:

• Utility and commercial panelboards that distribute power to large equipment, HVAC systems, and lighting networks
• Light industrial panels where reliable 3-phase protection is required
• Residential-scale installations in multi-panel configurations or environments utilizing Eaton loadcenter families

Installation and maintenance tips to maximize value:

• Pair the NB3800P with compatible Eaton panelboards for optimal fit, alignment, and trip coordination.
• Check panel labeling and ensure the 3-pole configuration matches the intended 3-phase circuit or distribution scheme.
• Verify termination torque and conductor sizing per manufacturer guidelines to maintain reliable protection and minimize contact wear over time.
• Use as part of a broader protection strategy that includes properly rated fusing, coordination studies, and periodic inspection of breakers and bus connections.

For professionals seeking robust, space-efficient, and OEM-aligned protection, the Eaton NB3800P delivers trusted performance for demanding panels and distribution systems. It’s the dependable choice when you need a 800 A, 600 V, 3-pole molded case circuit breaker that integrates smoothly with existing Eaton equipment and streamlines maintenance across residential, commercial, and light industrial projects.