Answer
Nov 06, 2025 - 11:49 AM
The "A225" in the part number of the Arco 4010 alternator is a nominal rating. The actual performance is rated in three stages:
Its high output, even at low idle RPM, is one of its primary features.
- Max Output (Cold): 254 Amps @ 9,000 alternator RPM
- Sustained Cruising Output (Hot): 187 Amps @ 6,000 alternator RPM
- Sustained Idle Output (Hot): 157 Amps @ 3,000 alternator RPM
Its high output, even at low idle RPM, is one of its primary features.
