NB80 - 80Amp Circuit Breaker

NB80 - 80 Amp Circuit Breaker

The NB80 is a dependable 80 Amp, 2‑pole thermal magnetic circuit breaker designed to deliver consistent performance in residential and light commercial electrical systems. With a 10 kA interrupting rating at 120/240 VAC, this breaker is built to protect circuits from overloads and short‑circuit conditions with precision and confidence. Its compact form (approximately 4.25″ in height) and bolt‑on frame style make installation simple — especially when replacing older breakers that are no longer manufactured. Engineered as a direct aftermarket fit, the NB80 slides right into your existing panel without requiring modifications, making upgrades or repairs faster and more efficient.

This breaker’s thermal magnetic design blends heat‑based overload protection with magnetic response to sudden surges, helping safeguard your wiring and connected equipment. Whether you’re maintaining an older panel or refreshing a service entrance, the NB80 gives you reliable circuit interruption when you need it most.

Key Features and Benefits

• High Interrupt Rating: Rated 10 kA @ 120/240 VAC to handle fault conditions safely and reliably.
• Thermal Magnetic Protection: Combines thermal overload detection with magnetic trip response for comprehensive circuit protection.
• Bolt‑On Mounting: Easy to install into compatible panels without extra adapters or special tools.
• Direct After‑Market Replacement: Designed to fit where older breakers used to sit, maintaining seamless compatibility with legacy systems.
• Compact, Space‑Saving Design: Optimized dimensions allow for space‑efficient installation in panels with limited room.
• Dual‑Pole Performance: Provides simultaneous protection across both hot legs of a 240 V system.

Technical Specifications

• Part Number: NB80
• Amperage: 80 Amps
• Poles: 2
• Interrupting Rating: 10 kA @ 120/240 VAC
• Frame Type: NB (bolt‑on)
• Weight: Approx. 2.0 lb
• Height: About 4.25 inches
• Trip Type: Thermal magnetic

Material Compliance and Certifications

• Industry Standards: This circuit breaker meets applicable safety and performance standards for circuit protection devices typically required in residential and commercial settings.
• Trip Mechanism: The thermal magnetic mechanism is engineered to comply with industry testing protocols to ensure long‑term stability and dependable electrical safeguarding.
• Material Selection: Materials are chosen for durability and consistent trip sensitivity over thousands of operations.

Where It Works Best

• Service entrance panels feeding sub‑circuits requiring mid‑range overcurrent protection
• Replacement projects where OEM parts have long been unavailable
• Residential power distribution feeding high‑demand circuits like HVAC units or large appliances
• Light commercial electrical systems with standard 120/240 VAC configurations