TEYH2040B - 40Amp Circuit Breaker

TEYH2040B - 40Amp Circuit Breaker

When dependable circuit protection matters, the TEYH2040B 40 Amp 2 Pole Bolt-On Thermal Magnetic Circuit Breaker is designed to deliver the performance electrical professionals expect. Built for 480Y/277V Class electrical distribution systems, this breaker helps protect circuits from overloads and short circuits while keeping your electrical system operating safely and efficiently.

Its bolt-on design creates a secure, stable connection inside compatible panelboards, making it a practical solution for both replacement projects and routine electrical maintenance. The built-in thermal magnetic trip unit responds to prolonged overload conditions as well as sudden fault currents, providing two levels of protection in a single device. With a non-interchangeable trip, the protection settings remain fixed, giving you added confidence that the breaker will perform as intended over its service life.

Engineered with an impressive 35kA interrupting rating at 480VAC and 65kA at 240VAC, the TEYH2040B is well suited for commercial and industrial environments where higher available fault currents demand dependable protection. Whether you're maintaining an existing power distribution system or replacing a worn breaker, this model offers the reliability and performance needed to keep your equipment protected and downtime to a minimum.

Key Features and Benefits

• 40 Amp Rating: For dependable branch circuit protection.
• 2-Pole Configuration: Protects two energized conductors in compatible AC systems.
• Bolt-On Installation: Provides a secure connection that helps improve long-term reliability.
• Thermal Magnetic Protection: Guards against both overloads and short circuits.
• Non-Interchangeable Trip: Maintains a fixed trip setting for consistent circuit protection.
• High Interrupting Capacity: Rated at 35kA @ 480VAC and 65kA @ 240VAC for demanding electrical systems.
• Designed for 480Y/277V Class Applications: Built for use in 480Y/277V Class applications.

Technical Specifications

• Part Number: TEYH2040B
• Type: TEYH
• Circuit Breaker Style: Bolt-On Thermal Magnetic
• Trip Type: Non-Interchangeable
• Poles: 2
• Amperage: 40A
• Voltage Class: 480Y/277V
• Interrupting Rating: 35kA @ 480VAC; 65kA @ 240VAC
• Dimensions:
  • Height: 5.25 in.
  • Width: 2.00 in.
  • Depth: 3.06 in.

Material Compliance and Certifications

• Industry Standards: The TEYH2040B is manufactured for use in low-voltage power distribution applications and is intended to meet applicable industry standards for molded case circuit breakers.
• Installation Requirements: Installation should always be performed by a qualified electrician in accordance with the National Electrical Code (NEC), local regulations, and the equipment manufacturer's recommendations. Always verify compatibility with your panelboard or electrical system before installation.

Where It Works Best

• The TEYH2040B is an excellent choice for commercial buildings, industrial facilities, manufacturing plants, institutional properties, and other 480Y/277V electrical distribution systems. It's commonly used to protect panelboards, lighting circuits, HVAC equipment, motor loads, and other branch circuits where dependable overcurrent protection is essential.