KA3070 - 70Amp Circuit Breaker

KA3070 - 70Amp Circuit Breaker

When you're trying to replace a breaker that has been in service for years, KA3070 on the label is a good starting point—but it isn't the only detail worth checking. This 70A, three-pole Type KA circuit breaker uses a thermal-magnetic design with an interchangeable trip unit and carries a 40°C rating. The KA3070 is built to last, with the focus here remaining where it should be: finding the correct form, fit, ratings, and function for compatible existing or legacy equipment.

Key Features and Benefits

• 70A, three-pole configuration provides two key identifiers for checking an existing installation.
• The KA designation helps confirm compatibility with equipment that calls for this specific breaker type.
• The thermal-magnetic trip design is well-suited to applications requiring this protection configuration.
• An interchangeable trip unit is an important compatibility detail when identifying the correct replacement.
• 40°C rated according to the supplied specifications.
• Load-side terminals are included, making the terminal arrangement clear before installation.
  

Technical Specifications

• Part Number: KA3070
  
• Product Type: Circuit Breaker
  
• Type: KA
  
• Amperage: 70A
  
• Poles: 3
  
• Trip Design: Thermal-Magnetic
  
• Trip Unit: Interchangeable
  
• Temperature Rating: 40°C
  
• A.I.C. at 240VAC: 25 kA
  
• A.I.C. at 480VAC: 22 kA
  
• A.I.C. at 600VAC: 22 kA
  
• Load-Side Terminals: Included
  
• Width: 5.50 in.
  
• Height / Length: 10.13 in.
  
• Depth: 3.94 in.
  
• Overall Dimensions: 5.50" W × 10.13" L × 3.94 "D
  
• Approximate Ship Weight: 16.00 lb.
  

Material Compliance and Certifications

No specific UL, CSA, IEC, RoHS, REACH, or other material-compliance certifications were provided with the available KA3070 specifications. These approvals should not be assumed. When a particular certification is required for the installation, verify it against the applicable product documentation before use.

Where It Works Best

The KA3070 70A circuit breaker is suited to compatible existing and legacy electrical equipment that calls for a three-pole Type KA breaker with a thermal-magnetic, interchangeable trip unit. It is particularly useful when selecting a replacement depends on matching an established combination of amperage, pole count, interrupting rating, physical dimensions, and terminal arrangement.