Q1-370 - 70 Amp Circuit Breaker

Q1-370 - 70 Amp Circuit Breaker

When your three-phase electrical system demands reliable protection during maintenance, the Q1-370 70A circuit breaker delivers peace of mind. Engineered for performance and safety, this three-pole breaker offers dependable overload and short-circuit protection at a 70 amp rating. Its plug-on design and compact footprint make it ideal for service upgrades or replacements, minimizing downtime while keeping your system safeguarded.

Key Features and Benefits

• Thermal-magnetic trip mechanism: Blends thermal (overload) and magnetic (short-circuit) response to react quickly under fault conditions.
• Three-pole configuration: Delivers balanced protection across all three phases in your system.
• Plug-on, space-efficient design: Mounts cleanly without excessive rewiring, occupying just six panel spaces.
• Consistent performance under load: Built to operate reliably under real-world conditions, giving you confidence in repeated maintenance cycles.
• Low profile, compact form factor: Easier to install in tight panels without sacrificing performance.
  

Technical Specifications

• Frame Type: Q1
  
• Poles: 3
  
• Amperage: 70 A
  
• Interrupting Capacity:
  • 10,000 A @ 240 VAC
• Dimensions:
  • Width: 2.25 inches
  • Length: 6.38 inches
  • Depth: 2.31 inches
• Weight: ~3.10 lb
  
• Panel Space Required: 6 spaces
  

Material Compliance and Certifications

• Industry Standards: The Q1-370 meets or exceeds UL 489 standards for molded case circuit breakers, ensuring compliance in regulated installations.
• Construction Quality: Each unit is crafted from premium materials that resist wear, heat, and mechanical stress — designed for durability over repeated cycles. You can rely on it to maintain consistent protection without premature aging or failure.
  

Where It Works Best

• This breaker shines in maintenance environments where a dependable 70 A, 3-pole device is needed for three-phase systems—whether in light industrial, commercial, or certain residential utility settings. It’s ideal when retrofitting or replacing existing breakers in panels, especially when you want to minimize changes to your wiring layout. If your system requires dependable protection during service inspections, periodic maintenance, or protective upgrades, the Q1-370 stands ready for the job.