A1B240 - 40 Amp Circuit Breaker

A1B240 - 40 Amp Circuit Breaker

When dependable circuit protection matters, the A1B240 bolt-on thermal magnetic circuit breaker is built to handle the job. Designed for 120/240 VAC electrical systems, this 2-pole, 40-amp breaker helps protect circuits and connected equipment from overloads and short circuits while maintaining a secure bolt-on connection in compatible panelboards. Its compact design makes installation easier in space-conscious electrical setups, and the thermal magnetic trip mechanism responds to changing electrical conditions with consistent protection you can count on.

Whether you’re maintaining an existing commercial panel, servicing industrial equipment, or replacing a compatible breaker in a legacy electrical system, the A1B240 is designed for proper form, fit, and function. Built to last and engineered for reliable everyday operation, this breaker is a practical solution for keeping electrical distribution systems operating safely and efficiently.

Key Features and Benefits

• 40 Amp, 2-Pole Configuration: Designed for dependable protection in 120/240VAC electrical systems.
• Bolt-On Mounting Design: Provides a secure and stable panel connection in compatible panelboards.
• Thermal Magnetic Trip Unit: Helps protect against overloads and short circuits through responsive thermal magnetic protection.
• 10kA A.I.C. Rating: Rated at 120/240VAC for interrupting fault currents within rated capacity.
• Compact Footprint: Supports efficient use of panel space in compatible electrical setups.
• Legacy System Compatibility: Designed for compatibility with existing and legacy electrical distribution systems.
• Commercial and Industrial Durability: Built for long-term operation in demanding commercial and industrial environments.
  

Technical Specifications

• Part Number: A1B240
  
• Type: A1B
  
• Poles: 2
  
• Amperes: 40A
  
• Voltage Rating: 120/240VAC
  
• A.I.C. Rating: 10kA @ 120/240VAC
  
• Mounting Style: Bolt-On
  
• Trip Type: Thermal Magnetic
  
• Dimensions:
  • Width: 1.5 in.
  • Height: 6.0 in.
  • Depth: 2.31 in.

Material Compliance and Certifications

• Electrical Distribution Applications: The A1B240 circuit breaker is manufactured for use in electrical distribution systems requiring properly rated overcurrent protection devices.
• Installation Requirements: A qualified electrician or facility professional should always confirm compatibility with applicable electrical standards and installation requirements before installation.
  

Where It Works Best

• Commercial electrical distribution panels
• Industrial control and power systems
• HVAC equipment and mechanical systems
• Lighting and branch circuit protection
• Office buildings and retail facilities
• Maintenance and retrofit projects involving compatible legacy panelboards
• Applications requiring a 40A, 2-pole bolt-on circuit breaker