TEYF3070B - 70Amp Circuit Breaker

TEYF3070B - 70 Amp Circuit Breaker

The TEYF3070B is a 70 amp, 3-pole bolt-on thermal magnetic circuit breaker built for protecting three-phase electrical systems in commercial and industrial applications. Designed for 480Y/277V Class systems, it combines overload and short-circuit protection in a single breaker. The bolt-on design provides a secure connection inside compatible panelboards, while the non-interchangeable trip helps maintain the factory-set protection rating throughout the life of the breaker. With an interrupting capacity of 18kA at 480VAC and 65kA at 240VAC, this breaker is suited for a variety of power distribution applications where dependable circuit protection is required. Whether you're replacing an existing breaker or maintaining an electrical distribution system, the TEYF3070B offers the performance and ratings professionals expect for demanding environments.

Key Features and Benefits

• 70 Amp Current Rating: Rated at 70 amps for protecting three-phase electrical systems in commercial and industrial applications.
• Three-Pole Design: Designed for use with three-phase electrical systems.
• Bolt-On Mounting: Provides a secure connection inside compatible panelboards.
• Thermal Magnetic Trip: Protects against overloads and short circuits in a single breaker.
• Non-Interchangeable Trip: Helps maintain the factory-set protection rating throughout the life of the breaker.
• Interrupting Capacity: Rated 18kA at 480VAC and 65kA at 240VAC.
• 480Y/277V Class: Designed for 480Y/277V Class applications.
• Compact Size: Fits compatible panelboards.

Technical Specifications

• Part Number: TEYF3070B
  
• Type: TEYF
  
• Poles: 3
  
• Amperage: 70 Amp
  
• Trip Type: Thermal Magnetic
  
• Mounting: Bolt-On
  
• Trip Unit: Non-Interchangeable
  
• Voltage Class: 480Y/277V
  
• Interrupt Rating: 18kA @ 480VAC; 65kA @ 240VAC
  
• Dimensions:
  • Height: 5.25 inches
  • Width: 3.00 inches
  • Depth: 3.06 inches

Material Compliance and Certifications

• Installation: The TEYF3070B is manufactured for use in commercial and industrial electrical distribution systems and is intended for installation in compatible equipment.
• Code Compliance: Always verify panel compatibility and install the breaker in accordance with the National Electrical Code (NEC), local electrical codes, and manufacturer recommendations.
  

Where It Works Best

• This breaker is commonly used in commercial buildings, industrial facilities, office buildings, schools, healthcare facilities, and manufacturing plants. It is a good fit for protecting lighting panels, HVAC equipment, distribution circuits, motor loads, and other three-phase electrical equipment that requires a 70 amp bolt-on circuit breaker.