ABB / General Electric TEYH3090B Miniature Circuit Breaker

This breaker is designed for use in GE A-Series lighting panelboards, including AS and AE subtypes, as well as ABB ReliaGear panelboards that accept bolt-on TEY-frame breakers.

The letter designation indicates the short-circuit interrupting rating at 480Y/277VAC. A standard TEY breaker is rated at 14kAIC, while the TEYH series offers a higher interrupting capacity of 35kAIC.

The factory-installed lugs accept 4 AWG to 1/0 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors.

For 3 AWG to 1/0 AWG wire, the recommended lug torque is 50 in-lbs. For 4 AWG to 6 AWG wire, the torque requirement is 45 in-lbs. Always verify with the breaker nameplate before installation.

Yes. Following ABB's acquisition of GE Industrial Solutions, GE TEYH breakers are fully compatible with legacy GE A-Series panels as well as modern ABB ReliaGear lighting panelboards designed for TEY frames.

Yes, the TEYH series features a current-limiting construction that provides a quick response to short-circuit level faults. This reduces let-through energy and helps improve overall system safety and arc flash protection.

Yes, standard TEY and TEYH frame circuit breakers are suitable for reverse feed applications.

When installed in an A-Series panelboard, it bolts directly to the bus. However, if used in a standalone unit-mount or lug-to-lug installation, a separate three-pole mounting base accessory is required.