ABB / General Electric TEYL1040B Molded Case Circuit Breaker

No, this is a bolt-on circuit breaker designed strictly for commercial GE A-Series panelboards. It will not fit in standard residential plug-on load centers.

Yes, the factory lugs are dual-rated for both copper and aluminum conductors ranging from 10 AWG to 4 AWG.

Yes, it carries a DC rating of 15kA at 125VDC, making it suitable for specific direct current applications that fall within these voltage and fault current limits.

With its 65kAIC rating at 277V, this breaker is used in commercial and industrial facilities where the available fault current exceeds the capacity of standard 14kAIC or 25kAIC breakers.

Ensure the A-Series panelboard is completely de-energized before bolting the breaker to the bus. Verify that the load side wiring is properly torqued to the lugs to prevent thermal issues.

ABB acquired GE Industrial Solutions in 2018. As a result, the TEYL1040B may feature either ABB or GE branding, but the physical dimensions and electrical specifications remain identical.

The TEYL series offers a higher interrupting capacity of 65kAIC at 277V, compared to the standard TEY at 14kAIC or TEYD at 25kAIC, making it suitable for systems with higher available fault currents.

The bolt-on design provides a highly secure, vibration-resistant connection to the panelboard bus, which is critical in industrial environments to prevent arcing and thermal degradation.