A1B320 - 20 Amp Circuit Breaker

A1B320 - 20 Amp Circuit Breaker

The A1B320 is a 20-amp, 3-pole thermal-magnetic circuit breaker designed for use with compatible A1B series electrical equipment. It is a good fit for commercial and industrial systems where the existing setup needs a breaker with the correct rating, mounting style, and physical dimensions. With its bolt-on design, the A1B320 mounts securely inside the panel and helps you protect circuits from overloads and short circuits during normal operation.

For maintenance crews, electricians, and facility managers, the right replacement breaker is not about adding something flashy. It is about getting the proper form, fit, and function for the equipment already in place. This breaker's compact size helps it fit into compatible panelboards and switchgear without taking up unnecessary space. Its thermal-magnetic trip design responds to both prolonged overload conditions and sudden fault events, providing the circuit with the protection it was designed to have.

The A1B320 is often used in power distribution applications tied to lighting, HVAC equipment, motor loads, and general facility electrical systems. Built to last and designed for everyday service, it is a dependable choice for maintaining legacy electrical equipment that requires an A1B type, 20-amp, 3-pole bolt-on breaker.

Key Features and Benefits

• 3-Pole Design: Built for multi-phase electrical systems requiring dependable branch circuit protection.
• 20 Amp Rating: Suitable for branch circuit protection in commercial and industrial applications.
• Thermal Magnetic Trip Mechanism: Helps protect against overloads and short-circuit conditions during normal operation.
• Bolt-On Mounting Style: Provides a secure connection inside compatible electrical panels and switchgear.
• Compact Size: Fits compatible panelboards and switchgear without taking up unnecessary space.
• 10k A.I.C. Rating: Rated at 240VAC for dependable fault interruption capacity.
• Maintenance and Replacement Applications: Useful for maintenance, repair, and replacement work requiring proper form, fit, and function.
• Commercial and Industrial Durability: Built to last in compatible electrical distribution systems and demanding environments.
  

Technical Specifications

• Part Number: A1B320
  
• Type: A1B
  
• Poles: 3
  
• Amperes: 20A
  
• A.I.C. Rating: 10k @ 240VAC
  
• Voltage Rating: 240VAC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Dimensions:
  • Width: 2.25"
  • Height: 6.00"
  • Depth: 2.31"

Material Compliance and Certifications

• Electrical Distribution Compatibility: The A1B320 circuit breaker is intended for installation in compatible electrical distribution equipment.
• Installation Requirements: Use and installation should follow applicable electrical codes, equipment labeling, and manufacturer requirements.
• Qualified Installation: Installation should be handled by qualified electrical personnel.
  

Where It Works Best

• Commercial electrical distribution systems
• Industrial facilities and manufacturing environments
• Compatible A1B series panelboards
• Switchgear and control panel applications
• HVAC equipment circuits
• Lighting distribution systems