The ABB 1SFA899312R1001 is a PSCBH-1 circuit breaker holder designed for use with PSTX series softstarters. It mounts within the softstarter enclosure to provide a dedicated mounting point for the branch-circuit protection device, keeping the breaker integrated into the starter assembly rather than requiring a separate panel location.
Compatibility and Fit
The holder is listed as suitable for PSTX softstarters. It accepts a circuit breaker and integrates into the PSTX enclosure, so the breaker and softstarter share the same footprint. When retrofitting or replacing an existing PSCBH-1 in a panel, verify the specific PSTX frame size and the breaker's physical dimensions against the holder's cavity.