NFJ621150 - 150Amp Circuit Breaker

NFJ621150 - 150Amp Circuit Breaker

The NFJ621150 150 amp circuit breaker protects commercial and industrial electrical systems from overloads and short circuits. This 2-pole molded case circuit breaker uses a thermal magnetic trip mechanism to respond to both sustained overcurrent conditions and sudden fault events. The thermal element manages overload protection, while the magnetic trip reacts quickly to short circuits, helping prevent damage to wiring and connected equipment. Its bolt-on design secures the breaker firmly to the panelboard, and the load-side lug terminals allow electricians to make solid, reliable connections during installation or replacement. With interrupting ratings of 22kA at 480VAC and 25kA at 240VAC, the NFJ621150 handles higher fault current levels in demanding commercial and industrial environments. Contractors and maintenance teams rely on this breaker when they need dependable 150A circuit protection in compatible NFJ frame panelboards.

Key Features and Benefits

• Delivers 150 amp overcurrent protection for commercial and industrial circuits
• Uses a thermal magnetic trip system to protect against overloads and short circuits
• Features a 2-pole configuration for appropriate panelboard applications
• Secures firmly with a bolt-on mounting design
• Supports dependable wiring connections with load-side lug terminals
• Clears faults effectively with a 22kA @ 480VAC and 25kA @ 240VAC interrupting rating

Technical Specifications

• Model Number: NFJ621150
• Amperage Rating: 150A
• Poles: 2
• Voltage Rating: Up to 480VAC
• Interrupting Capacity (AIC): 22kA @ 480VAC; 25kA @ 240VAC
• Frame Type: NFJ
• Breaker Type: Molded Case Circuit Breaker (MCCB)
• Trip Type: Thermal Magnetic
• Mounting Style: Bolt-On
• Terminal Type: Load-Side Lug Terminals
• Maximum Operating Temperature: 40°C
• Dimensions: 4.13" W x 9.31" L x 3.75" D
• Weight: 12 lbs

Material Compliance and Certifications

• The NFJ621150 meets established industry standards for electrical safety and performance. Manufacturers build it with durable materials that support consistent operation within its rated electrical limits. When installed correctly in compatible equipment, it helps maintain system integrity and code-compliant protection.

Where It Works Best

• Use the NFJ621150 150 amp 2-pole circuit breaker in commercial buildings, industrial facilities, and other applications that require reliable overcurrent protection. It fits NFJ frame panelboards and supports higher-capacity branch or feeder circuits. Electricians often select this breaker for maintenance replacements, system upgrades, and projects where secure bolt-on installation and solid fault protection matter.