EHC3040 - 40Amp Circuit Breaker

EHC3040 - 40 Amp Circuit Breaker

If you’re working with an existing panel that calls for an EHC frame breaker, the EHC3040 is built to match the original setup without guesswork. This 3-pole, 40-amp breaker uses a thermal-magnetic trip mechanism to handle both overloads and short circuits, helping keeping your system protected under normal operating conditions. With interrupting ratings of 14kA at 480VAC and 18kA at 240VAC, it’s suited for a wide range of commercial and industrial applications where maintaining the correct specifications is key.

Because it comes with a non-interchangeable trip unit, the protection settings are fixed—exactly what many legacy systems require. It’s also rated for 40°C environments and includes load terminals to streamline installation. Overall, this breaker is a straightforward, reliable solution when you need the right fit and ratings to keep existing equipment running as intended.

Key Features and Benefits

• 3-pole design: for use in three-phase electrical systems
• 40 amp rating: for consistent circuit protection
• The thermal-magnetic trip: responds to both overloads and short circuits
• Non-interchangeable trip unit: keeps protection settings fixed
• Designed for proper fit: in the EHC frame equipment
• Load terminals are included: for easier installation
• Rated for operation: in 40°C ambient conditions

Technical Specifications

• Part Number: EHC3040
  
• Poles: 3
  
• Amperage: 40A
  
• Voltage / Interrupting Rating:
  • 14kA @ 480VAC
  • 18kA @ 240VAC
• Trip Type: Thermal-Magnetic
  
• Frame Type: EHC
  
• Trip Unit: Non-interchangeable
  
• Temperature Rating: 40°C
  
• Included: Load terminals
  
• Shipping Weight: 4.13 lbs
  
• Shipping Height: 6.0 in
  

Material Compliance and Certifications

• This breaker is produced in line with established industry standards for molded case circuit breakers: and is intended for use in systems that follow NEC (National Electrical Code) guidelines.
• As always: confirm compatibility with your specific equipment before installation.

Where It Works Best

• The EHC3040 fits right into applications where matching an existing breaker is important. Typical use cases include:
  • Commercial panelboards already using EHC frame breakers
  • Industrial facilities with three-phase distribution systems
  • Maintenance and repair jobs where exact specs matter
  • Electrical systems operating at 240V or 480V requiring 40A protection