Upgrade your marine electrical system with the ARCO Marine Zeus High Output Alternator A275L, featuring a versatile 1"-2" mounting configuration and a durable terminal block. The A275L-12-SF12-EX-49K6 model is designed to deliver high efficiency and reliable power output, ensuring your vessel’s electrical systems perform flawlessly even in demanding environments. Engineered for marine-grade resilience and longevity, this alternator is the perfect choice for boat owners who prioritize robust performance and dependability on the water.
- Engineered for High Energy Production.
- Optimized for performance at idle speeds.
- Rapidly charges large battery banks.
- High-density, ultra-efficient stator winding produces maximum energy output.
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Coolest operating temperatures for increased performance. Runs 8 - 20% cooler than incumbent alternators due to:
- Heat-shedding coatings
- Rectifier located on housing exterior
- Dual cooling fans
- OEM components
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Unleash peak performance with E-Coat/ Cerakote. Our advanced coating dissipates heat, keeping the A275L cooler. This translates to more amperage for
sustained periods.
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For maximum performance or lithium battery charging, use an ARCO Zeus Alternator Regulator.
- SAE J1171 Certified.
California Proposition 65: WARNING Cancer. www.P65Warnings.ca.gov
Specifications:
| Field Type |
P |
| Rotor Poles |
16 |
| Stator Size |
138mm |
| Regulation |
Internal/External (IE) or External Only (EX) |
| Output Voltage |
14.1V (default) |
| Cut-In Alt. RPM |
1,061 |
| Maximum Alt RPM |
19,000 |
| Battery Post |
M8 Thread Post, Side Mount |
| Standard Pulley |
49K6 (6-groove, 49mm); 50mm Clutch Pulley (Optional) |
| Pulley Mount |
17mm diameter shaft, 25mm long, threaded M17 x 1.5 |
| Pulley Hardware |
M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included) |
| Diodes |
6 positive, 6 negative, 50A Rated, Avalanche |
| Max Output (Cold, 9,000 RPM) |
310 Amps |
| Sustained Cruising Output (Hot, 6,000 RPM) |
235 Amps |
| Sustained Idle Output (Hot, 3,000 RPM) |
198 Amps |
| Max Continuous Operating Temperature |
110°C/230°F |
| Housing |
3.15" J180 |
| Dimensions (LxWxH) |
6.8" x 8.5" x 5.6" |
