Q1-370 - 70 Amp Circuit Breaker

Q1-370 - 70 Amp Circuit Breaker

When you're replacing a breaker in existing equipment, the small details matter just as much as the amp rating. The Q1-370 is a 70-amp, 3-pole Type Q1 circuit breaker with a plug-on design and thermal-magnetic operation. It is rated 10 kA.I.C. at 240 VAC and requires six spaces. The breaker measures 6.38 inches high, 2.25 inches wide, and 2.31 inches deep, so you can compare its physical size along with its electrical ratings when checking compatibility. This makes the Q1-370 particularly useful for maintenance and replacement work involving existing or legacy electrical equipment that calls for this specific Q1 configuration. Rather than choosing a breaker based on amperage alone, also check the pole count, voltage, interrupting rating, connection style, dimensions, and available space. When those requirements match, the Q1-370 provides the form, fit, and function needed for its intended application. It's a straightforward circuit protection component that's built to last when properly selected, installed, and maintained.

Key Features and Benefits

• 70-amp rating for equipment designed around this specific amperage.
• Three-pole design for applications requiring a 3-pole breaker configuration.
• Thermal-magnetic operation provides circuit protection for the intended application.
• Rated 10k A.I.C. at 240VAC.
• Type Q1 configuration for compatible electrical distribution equipment.
• Plug-on connection for equipment designed to accept this mounting style.
• Requires six spaces, an important detail to check before installation.
• Well suited to replacement and maintenance work on compatible legacy equipment where matching the existing breaker configuration is critical.
• Built to last when used within its specified application and properly maintained.

Technical Specifications

• Part Number: Q1-370
  
• Type: Q1
  
• Breaker Type: Plug-On Thermal Magnetic Circuit Breaker
  
• Amperage: 70A
  
• Poles: 3
  
• A.I.C. Rating & Voltage: 10k @ 240VAC
  
• Dimensions:
  • Height: 6.38 in.
  • Width: 2.25 in.
  • Depth: 2.31 in.
• Spaces Required: 6
  

Material Compliance and Certifications

• Material compliance, certification, and listing information were not provided for the Q1-370. If your installation requires a particular certification, listing, or material standard, check the markings on the breaker and the applicable product or equipment documentation. Requirements can vary depending on the equipment and installation.

Where It Works Best

• The Q1-370 makes the most sense when you're maintaining electrical equipment that already requires a 70A, 3-pole Type Q1 plug-on thermal magnetic breaker. It's especially relevant for existing and legacy installations where keeping the correct breaker style, physical fit, and electrical ratings is the priority.
• Before using it as a replacement, compare the complete specifications with the equipment's requirements. Check for 70 amps, three poles, Type Q1 configuration, 10 kA.I.C. at 240VAC, plug-on mounting, and six required spaces. Physical dimensions matter too, particularly in older equipment where the available space and breaker configuration are already established.
• If those specifications match your application, the Q1-370 can provide the required form, fit, and circuit protection without introducing unnecessary changes to the existing setup. Always verify compatibility with the equipment documentation and applicable electrical requirements before installation.