EHB2040 - 40Amp Circuit Breaker

EHB2040 - 40 Amp Circuit Breaker

If you’re working with an older electrical panel, you already know the challenge—finding a circuit breaker that actually fits, aligns with original specs, and installs without forcing changes. The EHB2040 2-pole 40 amp circuit breaker is built for exactly that situation. Designed for panelboards manufactured before 1989, this breaker delivers the protection your system was originally engineered for, helping you maintain safe and consistent operation without unnecessary modifications. With its thermal-magnetic design, the EHB2040 responds to both overloads and short circuits, giving you dependable circuit protection where it counts. The non-interchangeable trip unit keeps things simple and consistent, while the included load terminals help streamline installation. Whether you’re handling routine maintenance or replacing a failed unit, this breaker fits into your workflow without slowing you down.

Key Features and Benefits

• Exact-fit solution for legacy systems – Designed for pre-1989 panels using EHB frame breakers
• Thermal-magnetic protection – Helps guard against overloads and short circuits
• 2-pole breaker design – Suitable for multi-phase circuit applications
• 40 amp capacity – Matches common electrical load requirements
• Non-interchangeable trip unit – Maintains consistent protection settings
• Load terminals included – Ready for installation with fewer extra parts needed
• Built to last – Designed for long-term use in established electrical systems

Technical Specifications

• Part Number: EHB2040
  
• Poles: 2
  
• Amperage: 40A
  
• Voltage Rating: 480VAC
  
• Interrupting Rating: 14kA @ 480VAC
  
• Frame Type: EHB
  
• Trip Unit: Non-interchangeable
  
• Temperature Rating: 40°C
  
• Approximate Height: 6.0 inches
  
• Shipping Weight: 2.75 lbs
  
• Included Components: Load terminals
  

Material Compliance and Certifications

• Built in accordance with applicable industry standards for circuit protection devices
• Designed to support installations that follow National Electrical Code (NEC) requirements
• Suitable for use in properly maintained electrical systems requiring rated overcurrent protection

Where It Works Best

• Older commercial and industrial facilities with pre-1989 panelboards
• Maintenance and repair projects where original equipment compatibility is required
• Electrical contractors sourcing direct replacement breakers for existing systems
• Facilities management teams maintaining continuity in legacy electrical infrastructure