NA3P90 - 90Amp Circuit Breaker

NA3P90 90 Amp Circuit Breaker

The NA3P90 90 Amp Circuit Breaker is a dependable, thermal magnetic circuit breaker engineered to provide consistent overcurrent protection in commercial and industrial electrical distribution systems. Designed with a 3-pole configuration and rated at 90 amps, this breaker delivers reliable performance for three-phase applications requiring up to 10k A.I.C. at 240VAC. Its stab-on mounting design allows for secure installation in compatible panelboards, helping reduce downtime during maintenance or replacements. Built to handle demanding electrical loads while maintaining precise trip response, the NA3P90 offers the balance of performance and protection professionals expect in mission-critical power systems.

Whether you're maintaining an existing electrical infrastructure or upgrading distribution equipment, the NA3P90 provides the protection necessary to safeguard wiring, equipment, and connected loads from overloads and short circuits. The thermal magnetic trip mechanism ensures accurate response to both sustained overcurrents and instantaneous fault conditions—helping maintain system integrity and reduce the risk of costly damage.

Key Features and Benefits

• 90 Amp Continuous Current Rating – Ideal for medium-duty commercial and industrial branch circuits.
• 3-Pole Configuration – Designed for three-phase electrical systems.
• 10k A.I.C. @ 240VAC – Provides dependable interruption capacity for fault protection.
• Thermal Magnetic Trip Unit – Dual protection against overloads (thermal) and short circuits (magnetic).
• Stab-On Mounting Design – Simplifies installation in compatible panelboards.
• NA Frame Type – Engineered for proper fit and performance within designated systems.
• Durable Construction – Built to withstand demanding operating environments while maintaining consistent trip accuracy.

Technical Specifications

• Part Number: NA3P90
• Amperage Rating: 90 Amps
• Poles: 3
• Voltage Rating: 240VAC
• Interrupting Capacity (A.I.C.): 10kA @ 240VAC
• Trip Type: Thermal Magnetic
• Mounting Style: Stab-On
• Frame Type: NA
• Approximate Height: 3.38 inches
• Approximate Weight: 3.0 lbs

Material Compliance and Certifications

• Industry Standards: The NA3P90 circuit breaker is manufactured to meet industry-recognized electrical safety and performance standards for molded case circuit breakers, ensuring compliance with safety and performance requirements.
• NEC Guidelines: It is designed for use in systems requiring compliant overcurrent protection components that align with applicable NEC guidelines and established electrical safety practices. Always verify compatibility with your specific panel and application requirements.

Where It Works Best

• Commercial buildings with three-phase distribution panels
• Light industrial facilities requiring 90 amp branch protection
• Electrical panel upgrades and replacements
• Maintenance applications in existing NA frame systems
• Equipment protection for motors, HVAC systems, and distribution subpanels