Product Details

M25FA932A – Automatic Voltage Regulator

Marelli Automatic Voltage Regulator

$2,043.00 SGD

M25FA932A – Automatic Voltage Regulator

The voltage regulator type “X20”, is suitable for Synchronous Generators of MARELLI MOTORI make, size range 160-710 frames. This regulator is proper to operate on machines rated from 10 up to 3000 kVA. The components of the regulator are encapsulated in order to maintain high reliability also with severe ambient conditions (high level of humidity, dust, salt atmosphere), and in case of high vibrations level. The regulator is proper both for single and 3-phase generators.

Technical Data:

  • VOLTAGE DRIFT: +/- 1 % voltage change, for 50°C T amb. change
  • RESPONSE TIME: 1 cycle
  • EXCITER FIELD RESISTANCE: 3 W (min) ÷ 25 W(max)
    • SUPPLY VOLTAGE: 170 -270 V
    • POWER SUPPLY: 1000 VA (max)
    • POWER DISSIPATED: 30 W (max)
    • VOLTAGE SENSING: 170 – 270 V , 350 – 480 V
    • OUTPUT CURRENT (DC): 8 A (max, continuous)
    • OUTPUT CURRENT (DC): 15 A (max forcing one minute)

*Alternative for M25FA468A, M25FA501A, M25FA502A and M25FA575A.

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  1. All prices and amounts displayed on this website are in Singapore dollars.
  2. Delivery Schedule:
    • Standard 4 to 5 working days ex-warehouse upon confirmation of payment received. (Transit time not inclusive.) If out of stock for some unforeseen reason, please allow 2 to 3 weeks for delivery.
    • During the post COVID-19 pandemic period, some spare parts may require up to 2 working weeks lead time. When the situation improves, we will improve. If you urgently need spare parts for replacement or repair work, please email us to confirm the delivery schedule before placing an order and paying through the online store.
    • For indented parts or items from Italy, it is estimated that it will take 4 working weeks (maybe longer) to ship out after payment is confirmed. (Not including shipping time.)
  3. Receipt: Once the parcel pick up, we will notify you via email. Airway bill no. will also be informed..
  4. Product Origin: Italy
  5. Shipping: All parts are delivered to your door via courier service. All taxes and duties at destination are the responsibility of the buyer. Unless otherwise stated in our other forms.
  6. If you have problems with the online store, please email us ( for an official quote. We will reply to your inquiry as soon as possible.
  7. The above remarks are subject to change without notice, please be sure to check the remarks before confirming your order and making payment.
Origin - Italy

Most parts sold origin from Marelli's factory in Italy. Unless some accessories or diodes may not produce by factory.

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