TEYF3040B - 40Amp Circuit Breaker

TEYF3040B - 40 Amp Circuit Breaker

The TEYF3040B is a 40 amp, 3-pole bolt-on circuit breaker designed for use in your 480Y/277V Class electrical systems. It uses a thermal magnetic trip mechanism to protect circuits from overloads and short circuits, making it a practical choice for everyday power distribution in commercial and industrial settings. This model features a fixed (non-interchangeable) 40-amp trip and mounts securely with a bolt-on connection in compatible panelboards. It carries an interrupting rating of 18kA at 480VAC and 65kA at 240VAC, giving it the capacity to handle higher fault currents where required. Whether you're replacing an existing breaker or maintaining electrical equipment, the TEYF3040B provides the ratings and configuration needed for a wide range of three-phase applications.

Key Features and Benefits

• 40 Amp Current Rating: 40 amp current rating.
• Three-Pole Design: Three-pole design for three-phase circuits.
• Thermal Magnetic Trip: Thermal magnetic trip responds to overloads and short circuits.
• Bolt-On Mounting: Bolt-on mounting for a secure installation.
• Fixed Trip Unit: Fixed, non-interchangeable trip unit.
• Interrupting Rating: Rated 18kA at 480VAC and 65kA at 240VAC.
• Voltage Class: Built for 480Y/277V Class systems.
• Application Fit: Fits compatible TEYF breaker applications.
  

Technical Specifications

• Part Number: TEYF3040B
  
• Type: TEYF
  
• Poles: 3
  
• Amperage: 40A
  
• Trip Type: Thermal Magnetic
  
• Mounting: Bolt-On
  
• Trip: Non-Interchangeable
  
• Voltage Class: 480Y/277V
  
• A.I.C. Rating: 18kA @ 480VAC; 65kA @ 240VAC
  
• Dimensions:
  • Height: 5.25 in.
  • Width: 3.00 in.
  • Depth: 3.06 in.

Material Compliance and Certifications

• Installation Requirements: The TEYF3040B is intended for installation in compatible electrical distribution equipment and should be installed according to the National Electrical Code (NEC), local regulations, and manufacturer recommendations. Always verify compatibility before installation.

Where It Works Best

• The TEYF3040B is commonly used in commercial buildings, manufacturing facilities, schools, office buildings, and similar environments with 480Y/277V three-phase power. It's suitable for protecting lighting panels, HVAC equipment, distribution circuits, and other branch circuits that require a 40 amp, three-pole bolt-on breaker.