TEYD3040B - 40Amp Circuit Breaker

TEYD3040B - 40Amp Circuit Breaker

The TEYD3040B is a 3-pole, 40 amp bolt-on thermal magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection for your commercial and industrial electrical distribution systems. Built as part of the TEYD series, this breaker features a non-interchangeable trip to help you maintain consistent protection settings throughout its service life. Its bolt-on mounting design creates a secure electrical connection that helps minimize movement in demanding applications, while the 480Y/277V class rating makes it well suited for three-phase power distribution equipment. With interrupting ratings of 25kA at 480VAC and 65kA at 240VAC, the TEYD3040B is an excellent choice for protecting feeders, branch circuits, panelboards, lighting systems, and equipment where reliable circuit protection is essential. Combining proven thermal magnetic performance with a compact footprint, this breaker helps you reduce downtime and supports safe, efficient electrical system operation.

Key Features and Benefits

• 40 Amp Continuous Current Rating: 40 Amp continuous current rating for dependable branch circuit protection.
• 3-Pole Configuration: 3-pole configuration designed for three-phase electrical systems.
• Bolt-On Mounting: Bolt-on mounting provides a secure installation and reliable electrical connection.
• Thermal Magnetic Trip Mechanism: Thermal magnetic trip mechanism delivers protection against both overloads and short circuits.
• Non-Interchangeable Trip Unit: Non-interchangeable trip unit helps ensure fixed protection settings.
• Interrupting Capacity: 25kA interrupting capacity at 480VAC and 65kA at 240VAC for applications requiring higher fault interruption capability.
• 480Y/277V Class Design: 480Y/277V class design suitable for commercial and industrial power distribution systems.
• Compact Design: Compact design allows installation in compatible electrical equipment while helping maximize available panel space.
  

Technical Specifications

• Part Number: TEYD3040B
  
• Series / Type: TEYD
  
• Circuit Breaker Type: Bolt-On Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Poles: 3
  
• Amperage: 40 Amps
  
• Voltage Class: 480Y/277V
  
• Interrupting Rating: 25kA @ 480VAC; 65kA @ 240VAC
  
• Dimensions:
  • Height: 5.25 in.
  • Width: 3.00 in.
  • Depth: 3.06 in.

Material Compliance and Certifications

• Industry Standards: The TEYD3040B is manufactured for use in compatible electrical distribution systems and is designed to meet applicable industry standards for molded case circuit breakers. Always verify compatibility with your panelboard or distribution equipment and ensure installation is performed in accordance with applicable electrical codes and manufacturer specifications.

Where It Works Best

• The TEYD3040B is well suited for a wide range of commercial and industrial applications requiring dependable overcurrent protection, including: Commercial buildings and office facilities, Industrial control panels and machinery, Lighting and power distribution systems, Panelboards and switchboard installations, Manufacturing facilities, Institutional and educational buildings, Three-phase branch circuits and feeder protection. When reliable protection, secure bolt-on installation, and dependable thermal magnetic performance are required, the TEYD3040B 3-pole 40 amp circuit breaker is a practical solution for maintaining the safety and performance of your electrical distribution system.