E3070 - 70Amp Circuit Breaker

E3070 - 70 Amp Circuit Breaker

The E3070 circuit breaker is a 70-amp, 3-pole thermal-magnetic circuit breaker designed for dependable protection in electrical distribution systems operating up to 240VAC. Built on the E-frame platform, this breaker features a non-interchangeable trip unit calibrated to provide consistent overcurrent and short-circuit protection for connected equipment and circuits. Its thermal-magnetic design combines long-time overload protection with instantaneous response to short circuits, helping maintain safe operation within panelboards and other legacy power distribution setups. Rated for operation at 40°C, the E3070 is commonly used as a direct replacement where matching frame size, pole configuration, and interrupting capacity are required. The unit includes load terminals for straightforward installation and secure conductor connections. Built with durability in mind, breakers in this class are designed to provide dependable service over many years when used within their rated conditions.

Key Features and Benefits

• 70 Amp current rating: suitable for branch or feeder circuit protection
• Three-pole configuration: for use in three-phase electrical systems
• Thermal-magnetic trip mechanism: provides protection against overloads and short circuits
• 10kA interrupting capacity at 240VAC: designed to handle fault conditions within rated limits
• Non-interchangeable trip unit: with factory-calibrated settings for consistent operation
• Includes load terminals: to support proper conductor termination during installation
• E-frame design: intended for compatibility with systems that require this frame type
• Designed for long service life: when installed and maintained according to rated specifications
  

Technical Specifications

• Part Number: E3070
  
• Amperage Rating: 70A
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Frame Type: E Frame
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-interchangeable
  
• Temperature Rating: 40°C
  
• Included Accessories: Load terminals
  
• Approximate Shipping Weight: 4.13 lbs
  
• Shipping Height: 6.0 in
  

Material Compliance and Certifications

• Manufacturing Materials: The E3070 circuit breaker is manufactured using electrical-grade materials suitable for use in industrial and commercial power distribution systems.
• Industry Manufacturing and Safety Practices: Components are produced to meet applicable industry manufacturing and safety practices for molded-case circuit breakers.
• Installation Compliance: Proper installation should always follow relevant electrical codes and manufacturer guidelines to maintain compliance and safe operation.
  

Where It Works Best

• Industrial control panels and machinery power circuits
• Commercial building electrical distribution systems
• Legacy panelboards and switchboards requiring E-frame breakers
• Three-phase feeder or branch circuit protection