EHD3040 - 40Amp Circuit Breaker

EHD3040 - 40Amp Circuit Breaker

When you need a dependable replacement for an existing Eaton EHD3040 circuit breaker, matching the original specifications matters. This 40 Amp, 3-pole Eaton Series C molded case circuit breaker is designed to provide the form, fit, and function required for compatible electrical distribution systems. Featuring a T186 thermal-magnetic trip unit, it helps protect electrical equipment by responding to overloads and short circuits while maintaining the electrical characteristics your system was originally designed around.

Whether you're replacing a failed breaker during routine maintenance or restoring equipment to service, this breaker delivers the compatibility and protection needed without requiring modifications to the original installation.

Key Features and Benefits

• 40 Amp continuous current rating
• Three-pole configuration for three-phase electrical systems
• Eaton Series C complete molded case circuit breaker
• EHD circuit breaker design
• F-frame construction for compatible equipment
• T186 thermal-magnetic trip unit provides overload and short-circuit protection
• Rated for 50/60 Hz operation
• Load-side terminals
• Built to last for long-term service
• Designed as a form, fit, and functional replacement for compatible Eaton EHD applications

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: EHD3040
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: EHD
  
• Frame: F
  
• Frame Type: Complete Breaker
  
• Amperage Rating: 40 Amps
  
• Number of Poles: 3
  
• Trip Unit: T186 Thermal-Magnetic
  
• Frequency: 50/60 Hz
  
• Interrupt Rating: 18 kAIC at 240 VAC; 14 kAIC at 480 VAC
  
• Terminals: Load Side
  
• Dimensions:
  • Length: 3.38 in.
  • Width: 4.13 in.
  • Height: 6.00 in.
• Weight: 4.35 lbs
  
• UPC: 786679317129
  

Material Compliance and Certifications

• UL Listed
• Manufactured to Eaton published specifications
• Covered by Eaton's published warranty policy

Where It Works Best

The Eaton EHD3040 is commonly used in commercial, industrial, and institutional electrical distribution systems that require a 40 Amp, 3-pole molded case circuit breaker. It is compatible with applications designed for the Eaton Series C EHD F-frame platform, including panelboards, switchboards, motor control equipment, and distribution panels. As a form-, fit-, and function-replacement, it helps maintain the original design and protective characteristics of compatible electrical systems, making it a practical solution for maintenance, repairs, and equipment restoration.