TEYF3050B - 50Amp Circuit Breaker

TEYF3050B - 50 Amp Circuit Breaker

The TEYF3050B is a 3-pole, 50-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 for 480Y/277V class applications, this Type TEYF breaker features a non-interchangeable trip unit, helping you maintain consistent protection settings throughout its service life. Its bolt-on mounting design provides a secure connection that minimizes movement and promotes reliable electrical performance in panelboard installations. Whether you're replacing an existing breaker during maintenance or completing a new installation, the TEYF3050B delivers the performance and protection expected in demanding power distribution environments while helping safeguard connected equipment from overloads and fault conditions.

Key Features and Benefits

• 50 Amp Continuous Current Rating: 50 Amp continuous current rating for reliable branch circuit protection.
• 3-Pole Configuration: 3-pole configuration for protecting three-phase electrical systems.
• Thermal Magnetic Trip Mechanism: The thermal magnetic trip mechanism protects against both overloads and short circuits.
• Bolt-On Mounting: Bolt-on mounting offers a secure installation and dependable electrical connection.
• Non-Interchangeable Trip: Non-interchangeable trip helps maintain fixed protection settings without field trip-unit replacement.
• High Interrupting Capacity: High interrupting capacity rated at 18kA at 480VAC and 65kA at 240VAC for applications requiring strong fault current protection.
• 480Y/277V Class: Designed for 480Y/277V Class electrical distribution systems.
• Compact Footprint: Compact footprint allows for efficient installation in compatible panelboards.
  

Technical Specifications

• Part Number: TEYF3050B
  
• Type: TEYF
  
• Poles: 3
  
• Amperage: 50A
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Trip Unit: Non-Interchangeable
  
• Voltage Class: 480Y/277V Class
  
• Interrupting Rating: 18kA @ 480VAC; 65kA @ 240VAC
  
• Dimensions:
  • Height: 5.25 in.
  • Width: 3.00 in.
  • Depth: 3.06 in.

Material Compliance and Certifications

• Industry Standards: The TEYF3050B is manufactured for use in compatible electrical distribution equipment and is designed to meet applicable industry standards for molded case circuit breakers.
• Compatibility: Verify compatibility with your specific panelboard and application requirements, as well as any applicable local electrical codes, before installation.
  

Where It Works Best

• The TEYF3050B is well-suited for a wide range of commercial, industrial, and institutional electrical systems requiring dependable three-phase circuit protection. It is commonly used in panelboards serving lighting systems, HVAC equipment, distribution circuits, manufacturing facilities, office buildings, schools, retail spaces, and other applications that require a 50-amp, 3-pole, bolt-on thermal-magnetic circuit breaker. Its combination of high interrupting ratings and secure bolt-on installation makes it an excellent choice for protecting equipment in demanding electrical environments.