• Aug 7, 2025 trane tcd 091 Rating | 50VA–200VA | 50VA–150VA | 60VA–250VA | | Protective Features | Built-in fuse, surge protection | External surge protection recommended | Basic insulation | | Physical Design | Compact, modular | Slightly larger | Similar | | Compatibility | Optimized for Trane systems | By Madeline Graham-Pagac
