NJJ232300 - 300Amp Circuit Breaker

NJJ232300 - 300Amp Circuit Breaker

The NJJ232300 300 amp circuit breaker is a practical choice for protecting electrical systems that require dependable, high-amp performance. Built on the NJJ frame, this breaker uses a bolt-on design and a thermal magnetic trip to help guard against overloads and short circuits. With an interrupting rating of 22kA at 240VAC, it is commonly used in commercial and industrial settings where equipment protection and system safety cannot be left to chance. This model is often selected for maintaining or servicing existing installations where compatibility and proven performance matter.

Key Features and Benefits

• 300 Amp rating: Helps manage higher electrical loads without nuisance tripping
• Thermal magnetic operation: Responds to both long-term overloads and sudden fault conditions
• Bolt-on mounting: Provides a secure connection that stays in place over time
• Load-side lug terminals included: Making wiring and replacement work more straightforward

Technical Specifications

• Amperage: 300 Amp
• Poles: 2
• Frame Type: NJJ
• Interrupting Capacity: 22kA @ 240VAC
• Breaker Type: Thermal Magnetic, Molded Case
• Operating Temperature: 40°C
• Dimensions:
  • Width: 8.25"
  • Length: 10.13"
  • Depth: 3.88"
• Weight: 23 lbs
• Terminals: Load-side lug terminals

Material Compliance and Certifications

• Industry Standards: This circuit breaker is manufactured in accordance with established electrical industry standards.
• UL and CSA Certified: Helping confirm that it meets recognized safety and performance requirements for electrical protection devices.

Where It Works Best

• The NJJ232300 is commonly used in service, maintenance, and replacement applications, especially in older electrical systems that were originally designed around NJJ-frame breakers. It’s a solid fit for commercial buildings, industrial equipment, and facilities where reliable protection is more important than cosmetic updates.