A1B270 - 70 Amp Circuit Breaker

A1B270 - 70 Amp Circuit Breaker

The A1B270 is a 2-pole, 70 amp circuit breaker made for use in compatible 120/240VAC electrical systems. It uses a bolt-on mounting style and a thermal magnetic trip system to help you protect circuits from overloads and short circuits. In many commercial and industrial settings, breakers like this are installed to keep existing electrical distribution equipment operating safely and correctly without changing the original panel setup.

Because it’s designed for compatibility with A1B-style systems, the A1B270 is often used during maintenance work, repairs, or direct breaker replacements. The bolt-on connection helps keep the breaker firmly secured inside the panel, while the compact housing leaves more working room in tighter electrical cabinets. Its thermal magnetic trip design reacts to both extended overload conditions and sudden fault currents, helping reduce the chance of damage to connected wiring and equipment.

For electricians and facility maintenance teams, finding the right replacement breaker is usually about matching the correct ratings and fit. The A1B270 is built for that purpose. It provides the form, fit, and function needed for compatible applications and is intended for continued use in existing power distribution systems.

Key Features and Benefits

• 70 Amp Rating: Designed for compatible commercial and industrial electrical applications requiring dependable branch circuit protection.
• 2-Pole Configuration: Suitable for use in 120/240VAC electrical systems.
• Thermal Magnetic Trip Mechanism: Helps protect circuits from overloads and short circuits through responsive thermal and magnetic trip functions.
• Bolt-On Mounting Style: Provides secure installation and dependable panelboard connection.
• 10kA Interrupting Rating: Rated at 120/240VAC for reliable fault interruption capacity.
• Compact Design: Helps fit into space-limited electrical panels and cabinets.
• A1B Compatibility: Designed for use in compatible A1B electrical systems and replacement applications.
• Built for Everyday Operation: Made for long-term service in commercial and industrial operating environments.
  

Technical Specifications

• Part Number: A1B270
  
• Type: A1B
  
• Poles: 2
  
• Amperes: 70A
  
• Voltage Rating: 120/240VAC
  
• A.I.C. Rating: 10kA @ 120/240VAC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Dimensions:
  • Width: 1.5 in.
  • Height: 6.0 in.
  • Depth: 2.31 in.

Material Compliance and Certifications

• Electrical Distribution Compatibility: The A1B270 circuit breaker is intended for installation in compatible electrical distribution equipment and should be applied according to local electrical codes and manufacturer guidelines.
• Installation Requirements: Users should confirm compatibility and rating requirements before installation.
  

Where It Works Best

• Commercial electrical panelboards
• Industrial power distribution systems
• Maintenance and repair applications
• Existing A1B-compatible equipment
• Branch circuit protection setups
• Retrofit and replacement projects
• Older systems requiring a compatible bolt-on breaker