621-Series, 100 Amp, Single Foot, ARS-5, Alternator Kit
5 out of 5 Customer Rating
Model # 18087866 Mfg # 621VUP-100-K6
Model # 18087866 Mfg # 621VUP-100-K6
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621-Series 100 Amp Alternator Kit

Designed for Recreational Applications

  • 100 Amp in a Small Case Package
  • Single Foot 1" / 2” Mount
  • K6 Serpentine Pulley
  • Up to 70A at Idle Speeds
  • Patented Smart Ready® Technology
  • Dual Fan Cooling
  • High Airflow Frame
  • Maximum RPM: 12,000
  • USCG Title 33, ISO, SAE and CE Compliant

Balmar 621-Series Alternators deliver high-output performance in a compact case. While all Balmar’s high-output alternators are designed and recommended for use with their multi-stage voltage regulators, the 621-Series Alternator utilizes Balmar’s Smart Ready® Technology. Smart Ready® internal regulation enables the alternator to be used as a stand-alone, charge controller that is ideal as a built-in backup regulator for the cruiser, or as a full-time regulator for systems where Smart Multi-Stage Regulation is not required.  If battery loads are relatively small and your engine is running frequently, the alternator’s internal regulator may be sufficient to support your electrical needs without external regulation. If your vessel utilizes larger deep-cycle battery banks or the engine’s duty cycle is less frequent (as is the case in most sailing applications).

ARS-5 Voltage Regulator

  • 5 Selectable Programs for Marine Batteries
  • 9 Amp Maximum Field Current
  • Appropriate for 6-Series Alternators (150A and below)
  • Single Engine, Single Alternator Applications Only
  • Temperature Sensor Cables
  • Temp Sensors can be used for 12 Volt and 24 Volt Systems
  • MC-TS-A – Alternator Cable, 54” Length
  • MC-TS-B – Battery Cable, 240” Length

  • Dimensions 5.68" (145 mm) Diameter x 5.10" (130 mm) Length x 9.67" (246 mm) Height
    ISO Approved USCG Title 33 , ISO , SAE , CE Compliant
    Mount Type Single Foot 1" or 2"
    Outputs 1 Output
    Pulley Groove Type Serpentine Groove
    Pulley Outside Diameter 2.45 Inches
    Rated Output Power - 2000 RPM Hot 70 Amps
    Rated Output Power - 6000 RPM Hot 93 Amps
    Type Alternator/External Smart Regulator
    Voltage 12 Volts DC
    Warranty One Year Limited Warranty against Defects in Material or Workmanship