CHB370 - 70Amp Circuit Breaker

CHB370 - 70 Amp Circuit Breaker

The CHB370 circuit breaker is a 70-amp, three-pole thermal magnetic breaker designed for use in CH loadcenters. It provides dependable protection for electrical distribution systems by interrupting power when overloads or short circuits occur. With a 240-volt rating and a 10 kAIC interrupt capacity, this breaker is commonly used to protect multi-phase circuits and connected equipment operating within compatible panels. The thermal-magnetic trip design reacts to both sustained overcurrent conditions and sudden fault currents, helping maintain safe electrical operation. Sized to fit properly within Eaton CH series panelboards and loadcenters, the CHB370 is often installed during maintenance or repair work where the original form, fit, and electrical ratings must be maintained. The unit accepts #14 through #8 AWG wiring, making it suitable for a range of standard branch-circuit applications. Like many breakers produced for long-term service, the CHB370 was built with durability in mind and continues to be used in many existing electrical systems.

Key Features and Benefits

• 70 Amp rating: for branch circuit protection
• Three-pole breaker: designed for multi-phase electrical systems
• Thermal magnetic trip mechanism: responds to overloads and short circuits
• 10 kAIC interrupt rating: for handling fault conditions within rated systems
• Designed for CH loadcenters: ensuring proper fit and compatibility
• Accepts #14–8 AWG conductors: covering commonly used wire sizes
• Compact breaker design: suitable for standard panel installations

Technical Specifications

• Catalog Number: CHB370
  
• UPC: 782113112657
  
• Product Type: Thermal Magnetic Circuit Breaker
  
• Breaker Series: CHB
  
• Amperage Rating: 70 A
  
• Voltage Rating: 240 V
  
• Number of Poles: 3
  
• Interrupt Rating: 10 kAIC
  
• Wire Size: #14–8 AWG
  
• Compatible Panels: CH Loadcenters
  
• Depth: 3.8 in
  
• Height: 3.3 in
  
• Width: 2.3 in
  
• Weight: 0.9 lb
  

Material Compliance and Certifications

• UL 489 Listed: confirming the breaker meets established safety requirements for molded case circuit breakers used in electrical distribution equipment.

Where It Works Best

• The CHB370 three-pole 70 amp circuit breaker is typically installed in CH loadcenters used in residential, commercial, and light industrial electrical systems. It is well suited for protecting multi-phase circuits, distribution circuits, and equipment loads operating at 240 volts. Electricians often rely on breakers like the CHB370 when servicing existing electrical panels where maintaining the correct form, fit, and electrical ratings is necessary for continued safe operation.