ABB / General Electric TEYD3040B Miniature Circuit Breaker

This breaker is designed specifically for GE and ABB A-Series lighting panels. It features a bolt-on mounting style and will not fit in standard residential PowerMark load centers, which require plug-on Q-Line breakers.

The letter D in the catalog number designates a higher interrupting capacity for commercial systems. While a standard TEY breaker is typically rated at 14kAIC for 277V applications, the TEYD3040B provides an upgraded 25kAIC rating at 480/277VAC.

ABB acquired GE Industrial Solutions, meaning current production of these breakers is managed by ABB. You may receive a unit branded with either the GE or ABB logo, but it is the exact same component with identical UL listings and panelboard compatibility.

The included lugs accept both copper and aluminum conductors ranging from 10 AWG to 4 AWG. Always ensure proper torque specifications are applied during installation as noted on the side label of the breaker.

Yes, this thermal magnetic breaker is fully rated for DC applications up to 250VDC. When used in a DC system, it provides an interrupting capacity of 10kAIC.

It utilizes a bolt-on connection rather than a plug-on clip. The breaker must be mechanically fastened directly to the busbars in an A-Series panelboard, providing a highly secure connection suited for commercial and industrial environments.