Q1B320 - 20 Amp Circuit Breaker

Q1B320 - 20 Amp Circuit Breaker

Built for those who demand dependable protection in industrial and commercial electrical systems, the Q1B320 is a 3-pole thermal magnetic circuit breaker rated at 20 amperes with a 10 kAIC @ 240 VAC capability. Whether you're retrofitting an older panel or upgrading a mission-critical control panel, this breaker delivers dependable overcurrent defense without taking up more space than necessary.

Key Features and Benefits

• Thermal-magnetic protection: Combines a bimetallic trip for long-term overloads with a magnetic trip for instantaneous short circuits, giving you layered defense for equipment and circuits.
• Bolt-on mounting design: Ensures a secure, tight fit in your electrical panel, minimizing the chance of loose terminations or vibration issues over time.
• Compact footprint: With overall dimensions of just 2.25″ W × 6.38″ L × 2.31″ D, it fits easily into existing breaker slots for maintenance or replacement work.
• High interrupting capacity: Rated to interrupt fault currents up to 10,000 AIC, it ensures your installation stays safe even under severe fault conditions.
• Efficient spacing: Requires just 6 breaker spaces (in 3-pole use) in your panel, maximizing space utilization.

Technical Specifications

• Poles: 3
  
• Rated Current: 20 A
  
• Interrupting Rating (AIC): 10,000 @ 240 VAC
  
• Dimensions:
  • Width: 2.25 inches
  • Length: 6.38 inches
  • Depth: 2.31 inches
• Shipping/Weight (approx.): 5 lb
  
• Frame Type: Q1B
  
• Panel Spaces Required: 6
  

Material Compliance and Certifications

• Industry Standards: This breaker is manufactured to rigorous industry standards to ensure reliability and safety in commercial and industrial systems.
• Construction: It is built from materials that withstand heat, vibration, and electrical wear, and is tested under strict protocols to comply with accepted safety norms. You can rely on this unit to perform in environments where regulatory compliance matters.
  

Where It Works Best

• The Q1B320 is best applied in maintenance, retrofit, and control panel upgrades where a compact, high-capability circuit breaker is needed. It’s ideal for protecting motors, distribution circuits, and auxiliary loads in factories, data centers, commercial buildings, and manufacturing plants. Use it when you want to replace worn-out breakers, combine multi-pole protection in a tight panel, or design new systems with high fault-current tolerance.