GE TEY3100 - 100 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The GE TEY3100 is a 3-pole, 100A molded case circuit breaker designed to protect branch circuits in panelboards and load centers with reliable, predictable performance at 480V. Built for demanding commercial and light industrial environments, this bolt-on breaker delivers a secure, vibration-resistant connection that stays put where it matters most.

• Bolt-on mounting: provides a rigid bus connection that stands up to vibration and equipment movement, reducing the risk of loose connections and intermittent trips.
• Thermal-magnetic trip unit: combines precise thermal overload protection with fast magnetic trip response for short circuits, delivering stable, repeatable protection curves across varying loads.
• 3-pole, 100A at 480V: ideal for three-phase distribution, offering ample headroom for commercial lighting, motors, and other 480V equipment.
• OEM and panel compatibility: engineered to work with matching GE OEM load centers and other panelboards that accept TEY3100-style breakers, simplifying installation and maintenance.
• Versatile application: suitable for residential, commercial, and light industrial circuits that require reliable branch circuit protection and short-circuit rescue in a compact, bolt-on package.

Why this design matters in the real world: the combination of secure mounting and a robust thermal-magnetic trip mechanism translates to fewer nuisance trips and quicker, controlled disconnection during faults. In facilities where 480V three-phase power feeds motors, HVAC systems, or processing equipment, the TEY3100 helps protect wiring insulation, downstream devices, and overall system uptime.

Use cases and scenarios

• Protecting 480V three-phase distribution feeders in commercial buildings, data centers, or light industrial spaces.
• Retrofit or replacement in GE-compatible panelboards where bolt-on molded case breakers are preferred for long-term reliability.
• Distributed protection for branch circuits feeding motors, pumps, compressors, and other heavy loads that benefit from solid bus connections and predictable trip behavior.

Installation and compatibility notes

Ensure the panelboard or load center is rated for 480V and supports bolt-on molded case breakers. The TEY3100 is designed for use as branch circuit overcurrent and short-circuit protection and is compatible with matching OEM GE panelboards as well as other panelboards that specify TEY3100-type devices. Follow standard electrical practices for safe installation and replacement by qualified personnel.

Technical specifications

• Manufacturer: GE
• Part Number: TEY3100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection