NJJ232350 - 350Amp Circuit Breaker

NJJ232350 - 350Amp Circuit Breaker

The NJJ232350 350 Amp circuit breaker is built for applications where dependable overcurrent protection isn’t optional—it’s expected. Designed on the NJJ frame, this two-pole thermal magnetic molded case breaker is commonly used in existing electrical systems that need a solid, like-for-like replacement. It carries a 350-amp rating and offers a 22k AIC at 240VAC, making it well suited for handling both overloads and short-circuit conditions. The bolt-on mounting style helps keep connections tight and steady, which is especially important in environments where vibration or long service life is a concern. Overall, this breaker delivers consistent protection without unnecessary complexity, making it a practical choice for many commercial and industrial setups.

Key Features and Benefits

• 350 Amp Capacity: Designed to handle higher current loads while helping prevent damage from overcurrent conditions.
• Thermal Magnetic Trip Mechanism: Responds to both sustained overloads and sudden short circuits for balanced protection.
• Bolt-On Installation: Helps maintain firm electrical contact and reduces the chance of connection issues over time.
• Load-Side Lug Terminals: Included to make wiring straightforward during installation or replacement.
• 22k AIC at 240VAC: Provides reliable fault current interruption in demanding electrical environments.

Technical Specifications

• Amperage: 350 Amps
• Poles: 2
• Frame: NJJ
• Interrupting Rating: 22k AIC @ 240VAC
• Breaker Type: Thermal Magnetic, Molded Case
• Operating Temperature: 40°C
• Dimensions:
  • Width: 8.25 inches
  • Length: 10.13 inches
  • Depth: 3.88 inches
• Weight: 23 lbs
• Terminals: Load-Side Lugs Included

Material Compliance and Certifications

• Manufacturing Standards: Built to meet applicable industry safety and performance requirements.
• Certifications: UL and CSA listed, supporting use in a wide range of commercial and industrial electrical systems.

Where It Works Best

• The NJJ232350 circuit breaker is a strong fit for maintenance and replacement work in existing electrical installations that require a 350 amp, two-pole breaker. It’s commonly used where system continuity matters and a dependable breaker is needed without altering the original design. This makes it a practical option for commercial facilities, industrial equipment, and legacy electrical systems that still need reliable protection today.