TEYF2040B - 40Amp Circuit Breaker

TEYF2040B - 40 Amp Circuit Breaker

The TEYF2040B is a 2-pole, 40-amp bolt-on thermal magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection in your commercial and industrial electrical distribution systems. Built for 480Y/277V Class applications, this breaker features a non-interchangeable trip that maintains a fixed trip setting for consistent circuit protection. With interrupting ratings of 18kA at 480VAC and 65kA at 240VAC, the TEYF2040B is well-suited for installations where reliable fault interruption and long-term performance are essential. Its bolt-on mounting design helps you create a secure electrical connection, making it an excellent choice for panelboards and distribution equipment that demand dependable circuit protection in demanding environments.

Key Features and Benefits

• 40 Amp Continuous Current Rating: 40 Amp continuous current rating for branch circuit protection.
• 2-Pole Configuration: 2-pole configuration for applications requiring protection across two conductors.
• Thermal-Magnetic Trip Mechanism: The thermal-magnetic trip mechanism protects against both overloads and short circuits.
• Bolt-On Mounting Design: Bolt-on mounting design provides a secure installation that helps reduce movement and maintain reliable electrical connections.
• Non-Interchangeable Trip: Non-interchangeable trip ensures the factory-calibrated trip setting remains fixed.
• High Interrupting Capacity: High interrupting capacity, rated at 18kA at 480VAC and 65kA at 240VAC, for dependable fault protection.
• 480Y/277V Class: Designed for 480Y/277V Class electrical distribution systems.
• Compact Footprint: Compact footprint simplifies installation in compatible electrical equipment.

Technical Specifications

• Part Number: TEYF2040B
• Type: TEYF
• Circuit Breaker Type: Bolt-On Thermal Magnetic Circuit Breaker
• Trip Type: Non-Interchangeable Trip
• Poles: 2
• Amperage: 40A
• Voltage Class: 480Y/277V Class
• Interrupting Rating: 18kA @ 480VAC; 65kA @ 240VAC
• Dimensions:
  • Height: 5.25 in.
  • Width: 2.00 in.
  • Depth: 3.06 in.

Material Compliance and Certifications

• Industry Performance Requirements: The TEYF2040B is manufactured for use in compatible electrical distribution systems and is designed to meet applicable industry performance requirements for molded case circuit breakers.
• Installation Requirements: Always verify compatibility with your panelboard or electrical equipment and ensure installation complies with the National Electrical Code (NEC), local electrical codes, and manufacturer specifications. Certification and compliance requirements may vary depending on the installation and application.

Where It Works Best

• The TEYF2040B is an excellent choice for a variety of commercial and industrial power distribution applications, including commercial buildings and office facilities, industrial manufacturing equipment, distribution panels and panelboards, institutional and educational facilities, healthcare and municipal buildings, retail centers and mixed-use properties, and electrical systems operating on 480Y/277V distribution networks. Its combination of a 40-amp rating, thermal magnetic protection, bolt-on installation, and high interrupting capacity makes the TEYF2040B a dependable solution for protecting electrical circuits where consistent performance and reliable fault protection are critical.