ABB / General Electric TLB234125WL Molded Case Circuit Breaker

This unit mount, feed-thru breaker is designed for installation in compatible GE switchboards and motor control centers. It is secured using a bolt-on mounting style rather than plugging into a panelboard busbar.

The legacy GE TB frame breakers have been superseded by the ABB Tmax XT4 series. Upgrading to the XT4 typically requires a specific retrofit kit to adapt the new breaker footprint to existing switchboards or motor control centers.

The TLB234125WL features a thermal magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element. The adjustable magnetic setting allows you to fine-tune the instantaneous short-circuit trip point, which is critical for coordinating with motor inrush currents or other downstream devices.

ABB acquired GE Industrial Solutions. Legacy GE product lines like the Tri-Break series are now manufactured and supported under the combined ABB / General Electric brand, though the physical footprint and performance remain identical to the original GE specifications.

Yes, the breaker is supplied with factory-installed line and load lugs. When terminating conductors, ensure the wire size falls within the accepted 4 AWG to 300 kcmil range and is properly torqued to the manufacturer specifications to prevent thermal issues.