Some applications demand very high current in harsh environments. Fire trucks and off-highway equipment operate under-hood in high ambient temperatures and have large electrical loads. Delco Remy’s 55SI and 40SI heavy-duty brushless alternators are designed for these conditions.
Features of 55SI and 40SI High-Output Alternators
- Brushless design and Remote Sense functionality allow them to survive extreme under-hood temperatures while maintaining high output
- High output at engine idle ensures that emergency lighting, pumps and other critical loads have sufficient power even when the engine is idling
- Hairpin stator and robust frame design provide exceptional durability — only a handful of 55SI units have been returned in over 15 years of service
- These models were originally developed for off-highway equipment manufacturers and have a proven track record for reliability