STAMFORD® MX321 Voltage Regulator AVR

STAMFORD® MX-321 Voltage Regulator AVR

Product Group: STAMFORD® voltage regulators

Part/Model #: MX321

Quality: Factory tested, satisfaction guaranteed

Condition: 100% genuine, certified factory original

Warranty: Full factory warranty

Pricing: Below MSRP

Shipping: Overnight as available

Product Information

STAMFORD® MX-321 Voltage Regulator AVR

The STAMFORD® MX321 AVR is a 3-phase PMG that senses excitation and voltage within automatically or manually set limits. Custom features on this closed loop control include:

  1. DC Mixer
  2. Stability Circuit
  3. Potential Divider and Rectifier
  4. Low Hz Detector
  5. Over Excitation Detector

Power input voltage is 170-220V ac 3 phase, 3 wire and Frequency 100-120 Hz nominal. Power output voltage is a maximum of 120V dc.

Identical Automatic Voltage Regulator as:
Cummins Onan VR 305-0823
STAMFORD® VR E000-23210
STAMFORD® VR E000-23212/1P
Mitsubishi VR 44R21811
Olympian VR 594-158
Olympian VR 594-010
FG Wilson VR 594-010
FG Wilson VR 594-158

Brand New! In Stock. Ships same day. Worldwide.
Quantity discounts are available!

Cummins Generator Technologies

Manufacturing Origin:
United Kingdom (UK)


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Personalized Tech Support

Knowing which part you need isn’t always as easy as you might expect. That’s why Ward Leonard provides Authorized Tech Support to help you define exactly what you need to get your alternator back up and running. Much more than a distributor, we’re an Authorized Service & Repair Center that has handled hundreds of alternator projects over the years — and there isn’t a part we don’t know, can’t find, or can’t repair. Call 1-800-673-0531 to discuss your specific part — or any other maintenance and repair — needs.

STAMFORD® Alternator Service Guide

Maximize the life of your STAMFORD® alternator by following the recommended scheduled service and repair activities in this easy-to-understand guide. Activities include: Commission, Post Commission 250 hours/6 months, 1,000 hours/1 year service, 10,000 hours/2 year service and 30,000/5 year Service Kits for the following models:

  • P0/P1 Alternators
  • UC22/UC27 Alternators
  • HC4/HC5/HC6 Alternators
  • P7 Alternators
  • P80 Alternators
  • S Range

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