999316 - 100 Amp Circuit Breaker

999316 - 100 Amp Circuit Breaker

The 999316 molded case circuit breaker is designed for straightforward replacement in existing electrical systems, where fit and compatibility matter as much as the rating itself. With a 100-amp capacity, 3-pole configuration, and 600 VAC rating, it’s designed to handle the demands of commercial and industrial distribution without requiring changes to your setup. This unit uses a thermal-magnetic trip mechanism, meaning it responds to both sustained overloads and sudden short circuits—exactly what you’d expect in a breaker meant for real-world use. The ML-1 (F-Frame) design helps ensure it lines up with existing mounting and connection points, making it a practical choice when you’re maintaining or restoring older equipment. It’s compact, solidly built, and intended to do its job without drawing attention to itself—just steady, reliable protection where it counts.

Key Features and Benefits

• 100 amp rating for standard commercial and industrial applications
• 3-pole design for three-phase electrical systems
• Thermal-magnetic trip for both overload and short-circuit protection
• 600VAC rating suited for higher-voltage distribution setups
• ML-1 (F-Frame) construction for proper fit in existing equipment
• Molded case housing designed for long service life
• Compact size helps simplify installation and replacement
• Ideal for maintaining and servicing legacy systems

Technical Specifications

• Part Number: 999316
  
• Amperage: 100A
  
• 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: 6 lbs
  

Material Compliance and Certifications

• Industry Standards: This breaker is produced and designed to meet industry-standard expectations for molded-case circuit protection. It is intended for use within its rated electrical limits and in accordance with applicable codes and installation practices. Always verify requirements based on your specific application and local regulations.
• 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

• Existing commercial and industrial electrical systems
• Panelboards and switchgear requiring ML-1 frame breakers
• Three-phase power distribution setups
• Maintenance, repair, and replacement projects
• Facilities operating at or near 600VAC