MPN: Soft Starter Parts Range — industrial control spare part, in stock at TGK Parts.
Soft starters fail in predictable ways: the SCR modules short or stop firing, the bypass contactor welds, and the control board power supply dies after years of heat. Board and SCR level repair is standard practice — and we supply the parts: SCR modules matched by current rating and part marking, control boards, bypass contactors, fans and keypads for ATS48, PSS/PST, 3RW and other common platforms.
Send the starter nameplate and we identify the replaceable parts with a quote within 12 hours.
| SCR modules | Anti-parallel thyristor modules, 30-500 A class, matched by drive marking |
|---|---|
| Control boards | Main control boards, display/keypad boards, current transformer boards |
| Bypass contactors | AC-1 rated bypass contactors matched to starter frame current |
| Fans & thermal | Cooling fans, heatsink assemblies, thermal sensors |
| Platforms | Schneider ATS48, ABB PSS/PST/PSE, Siemens 3RW30/40/44, Allen-Bradley SMC |
| Condition | New / tested / refurbished (stated per item) |
| Warranty | 12 months |
Replacement and spare part for industrial automation equipment — production lines, CNC machines, packaging machinery, textile machinery, printing equipment and more.
Yes. Anti-parallel SCRs must be replaced in pairs; a mismatched new/old pair causes uneven current sharing and repeat failure.
Yes — a welded bypass keeps the motor energized through the SCRs and trips the starter on start. We supply matched bypass contactors.
We supply parts and can arrange board-level repair through our service partners — send the nameplate for a quote.