TEYL3090B - 90Amp Circuit Breaker

TEYL3090B - 90 Amp Circuit Breaker

The TEYL3090B is a 90-amp, 3-pole bolt-on thermal-magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection for commercial and industrial electrical distribution systems. Built as part of the Type TEYL family, this breaker features a non-interchangeable trip unit that delivers consistent protection by maintaining a fixed trip setting throughout its service life. Its bolt-on mounting design creates a secure electrical connection that helps minimize movement and promotes long-term reliability in demanding panelboard applications. Rated for 480Y/277V Class systems, the TEYL3090B also offers a high interrupting capacity of 65kA at 480VAC and 100kA at 240VAC, making it well-suited for installations where elevated fault-current protection is required. Whether you're maintaining existing equipment, replacing a failed breaker, or supporting a facility upgrade, the TEYL3090B provides the dependable performance and protection expected in critical power distribution environments.

Key Features and Benefits

• 90 Amp Current Rating: 90 amp current rating for reliable branch circuit protection.
• Three-Pole Configuration: Three-pole configuration for three-phase electrical systems.
• Bolt-On Design: Bolt-on design provides a secure, stable installation.
• Thermal Magnetic Trip Mechanism: The thermal magnetic trip mechanism protects against both overloads and short circuits.
• Non-Interchangeable Trip Unit: Non-interchangeable trip unit helps maintain consistent protection settings.
• High Interrupting Capacity: High interrupting capacity rated at 65kA at 480VAC and 100kA at 240VAC.
• 480Y/277V Class Systems: Designed for 480Y/277V Class electrical distribution systems.
• Compact Footprint: Compact footprint simplifies installation in compatible panelboards.
  

Technical Specifications

• Part Number: TEYL3090B
  
• Type: TEYL
  
• Circuit Breaker Style: Bolt-On Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Voltage Class: 480Y/277V
  
• Poles: 3
  
• Current Rating: 90 Amps
  
• Interrupting Rating:
  • 65kA @ 480VAC
  • 100kA @ 240VAC
• Dimensions:
  • Height: 5.25 in.
  • Width: 3.00 in.
  • Depth: 3.06 in.

Material Compliance and Certifications

• Industry Standards: The TEYL3090B is manufactured to meet applicable industry standards for molded-case circuit breakers in its product class.
• Installation Guidance: Always verify compatibility with your electrical system, panelboard, and local electrical code requirements before installation. Installation and servicing should be performed by qualified electrical personnel.
  

Where It Works Best

• The TEYL3090B is an excellent choice for commercial, institutional, and industrial electrical systems that require dependable overcurrent protection in 480Y/277V applications. It is commonly used in panelboards serving lighting systems, HVAC equipment, distribution circuits, manufacturing facilities, office buildings, retail spaces, educational campuses, and other three-phase power distribution environments where a high interrupting capacity and secure bolt-on installation are important.