EH34040 - 40 Amp Circuit Breaker

EH34040 - 40 Amp Circuit Breaker

When you’re working with an existing electrical system, the last thing you want is guesswork. The EH34040 circuit breaker is built to match the form, fit, and function required for EH-4 frame panelboards, making it a practical choice for keeping your system running as intended. With a 3-pole, 40-amp configuration, it’s designed to handle multi-phase applications while helping protect your equipment from overloads and short circuits through its thermal magnetic trip mechanism.

Installation is straightforward thanks to the plug-on design, which allows for a secure connection without unnecessary modifications. Whether you're maintaining a commercial panel or handling a replacement in an industrial setting, this breaker supports continuity—so you can focus on getting the job done efficiently. Built to last and designed for consistent operation, the EH34040 fits right into place where reliability and compatibility matter most.

Key Features and Benefits

• 40 Amp, 3-pole breaker designed for multi-phase circuit protection
• Thermal magnetic trip helps guard against overloads and short circuits
• Plug-on mounting style for quick and secure installation
• Compatible with EH-4 frame panelboards for proper fit
• Interrupting capacity of 14kA @ 480VAC and 65kA @ 240VAC
• Built to last for long-term use in established systems

Technical Specifications

• Part Number: EH34040
  
• Poles: 3
  
• Amperes: 40A
  
• Frame Type: EH-4
  
• Interrupting Rating: 14kA @ 480VAC; 65kA @ 240VAC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Plug-On
  
• Height: 3.5 inches
  
• Weight: 3.0 lbs
  

Material Compliance and Certifications

• The EH34040 is manufactured to meet recognized industry safety and performance standards.
• It aligns with applicable UL requirements for molded case circuit breakers used in North American electrical systems.
• Always verify compliance with local electrical codes and installation guidelines.

Where It Works Best

• Commercial buildings and office spaces
• Light industrial facilities
• Maintenance and repair projects involving legacy panelboards
• Applications where matching the original breaker specifications is essential