EH3040 - 40Amp Circuit Breaker

EH3040 - 40Amp Circuit Breaker

The EH3040 is a 3-pole, 40 Amp Type EH thermal-magnetic circuit breaker designed as a form, fit, and functional replacement for compatible electrical distribution systems. Featuring a non-interchangeable trip unit, this breaker is rated for a 14 kA interrupting capacity at 480 VAC and is suitable for operation in 40°C ambient conditions. Its thermal-magnetic design combines inverse-time overload protection with instantaneous short-circuit protection, helping maintain the intended level of circuit protection for equipment originally designed to use this breaker.

Whether you're replacing a worn or non-functioning breaker as part of routine maintenance or restoring an existing electrical system, the EH3040 is designed to match the original electrical and mechanical specifications of compatible equipment. Load terminals are included to help streamline installation in approved applications.

Key Features and Benefits

• Part Number: EH3040
• 3-pole thermal-magnetic circuit breaker
• 40 Amp current rating
• Type EH configuration
• Non-interchangeable trip unit
• Rated for operation in 40°C ambient conditions
• Load terminals included
• Provides overload and short-circuit protection for compatible electrical systems
• Designed as a form, fit, and functional replacement for compatible legacy electrical equipment
• Built to last for dependable operation in properly maintained electrical systems
  

Technical Specifications

• Part Number: EH3040
  
• Type: EH
  
• Breaker Type: Thermal-Magnetic Circuit Breaker
  
• Trip Unit: Non-Interchangeable
  
• Poles: 3
  
• Amperage: 40 Amps
  
• Voltage Rating: 480VAC
  
• Interrupting Capacity (A.I.C.): 14kA @ 480VAC
  
• Ambient Rating: 40°C
  
• Load Terminals: Included
  
• Dimensions:
  • Width: 4.13 in.
  • Height: 6.50 in.
  • Depth: 3.31 in.
• Approximate Shipping Weight: 6.50 lbs.
  

Material Compliance and Certifications

• Thermal-magnetic molded case circuit breaker designed for use in compatible electrical distribution equipment.
• Rated for operation in 40°C ambient environments.
• Intended for installation by qualified personnel in accordance with the National Electrical Code (NEC), applicable local electrical codes, and the original equipment manufacturer's installation requirements.
• Always verify the part number, breaker type, amperage, voltage rating, interrupting capacity, trip unit configuration, pole count, and dimensions before installation to confirm compatibility with your existing equipment.
  

Where It Works Best

The EH3040 is well suited for compatible commercial, industrial, and institutional electrical systems that require a 3-pole, 40 Amp Type EH thermal-magnetic circuit breaker. It is commonly used in panelboards, switchboards, motor control centers, HVAC equipment, manufacturing facilities, and other electrical distribution systems originally designed for this breaker style.