999350 - 50 Amp Circuit Breaker

999350 - 50 Amp Circuit Breaker

When you’re maintaining an existing electrical system, the last thing you want is guesswork. The 999350 molded case circuit breaker is built to match the form, fit, and function of ML-1 frame setups, giving you a straightforward solution for keeping your system protected and operating as intended. With a 50 amp rating and 3-pole configuration, this breaker is designed for three-phase applications where consistent, dependable circuit protection matters. Its thermal-magnetic trip mechanism handles both overloads and short circuits, reacting when it needs to—without unnecessary complexity. Sized at 4.50” W x 6.50” L x 3.00” D, it fits into existing panel spaces without forcing modifications. And with a 600VAC rating, it’s well-suited for commercial and industrial environments where higher voltage systems are common. Simply put, this is a practical replacement option that helps keep your equipment running the way it was designed to.

Key Features and Benefits

• 50 Amp Rating – Matches system requirements for controlled load protection
• 3-Pole Design – Ideal for three-phase electrical distribution
• Thermal-Magnetic Protection – Handles both overload and short circuit conditions
• ML-1 (F-Frame) Compatibility – Designed for proper fit in existing installations
• 600VAC Capacity – Works within higher voltage applications
• Compact Dimensions – Installs easily in space-conscious panels
• Built to Last – Designed for long-term use in established systems

Technical Specifications

• Part Number: 999350
  
• Amperage: 50A
  
• Poles: 3
  
• Voltage Rating: 600VAC
  
• Frame Type: ML-1 (F-Frame)
  
• Trip Type: Thermal-Magnetic
  
• Dimensions:
  • 4.50” W x 6.50” L x 3.00” D
• Weight: 7 lbs
  

Material Compliance and Certifications

• Industry Standards: This circuit breaker is constructed using materials standard to molded case circuit breakers used in commercial and industrial applications. It is intended to meet typical expectations for electrical system components. Always verify compliance with local electrical codes and specific project requirements before installation.
• UL Standards: When installed according to electrical codes, you can have confidence that this unit adheres to expected construction and compliance benchmarks.
  

Where It Works Best

• The 999350 circuit breaker is a strong fit for situations where maintaining system compatibility is key:
• Existing commercial electrical panels
• Industrial facilities with three-phase equipment
• Maintenance and repair projects
• Replacement of ML-1 frame breakers without redesigning the system