M00FA122A ‘MARK VX’ – Marelli AVR


Marelli M00FA122A voltage regulator – MARK VX

Price is included Thai Import Tax and VAT.

Price to customers outside of Thailand is 375 € + courier service 100 €. Taxes and duty fees at destination at buyer cost.

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The M00FA122A is a analog automatic voltage regulator made by Marelli in Italy. Standard on 160- 225 frames. This regulator senses 2 phases and adjusts excitation when needed.
Auxiliary windings is needed to power the AVR.


  • Mainly used on Olympian, FG Wilson & Caterpillar CAT generator sets


  • Marelli 11000013
  • Marelli Mark VX
  • Marelli M00FA122A

Technical Data
– Regulation Accuracy: +/- 0.5% steady state conditions
– Voltage Drift: +/- 0.5% voltage chage, for 50 ° C amb. temperature change
– Respond Time: 1 cycle (20ms – 16.6ms)
– Operating Temperature: -30 ° C ÷ 70 ° C
– Exciter Field Resistance: 8 Ω (min) ÷ 20 Ω (max)
– Supply Voltage: 170 -270 V (100/120Hz)
– Power Supply: 350 VA (max)
– Power Dissipated: 15 W (max)
– Voltage Sensing: 170 -270
– Output voltage (DC): 30 V
– Output Current (DC): 5 A (max, continuous)
– Output current (DC): 8 A (max one minute forcing)

– Delivery Schedule: 4 working days ex-warehouse upon confirmation of payment received. (Transit time not inclusive.) In the event of some unforeseen reason out of stock, please allow 2 to 3 weeks lead time.
– Receipt: Once the parcel pick up, we will notify you via email. Airway bill no. will be advise as well.
– Product Origin: Italy
– Shipping: All parts ship door to door via courier service. All taxes and duty fees at destination at buyer cost.
– Should you not able to add more quantity, which means the value exceed the libility cost. Please send us an email (info@thai-avr.com) to request for official quotation. We will respond to your enquiry asap.


Model Mark VX
Frame size 160 ÷ 225
Technology ANALOGUE
Regulator Mark VX
Part number 11000013
Compliance CE and UL unlisted
Generator frame size Standard 160÷225
AVR supply Auxiliary winding*, mains
Voltage sensing Single phase
Voltage remote control Arrangement
Radio interference supressor Internal
MARK VX 11000013
Limiters Under-frequency
Power supply voltage 170 ÷ 277 Vac @ 50/60 Hz
Power supply source Auxiliary windings, mains
Voltage build-up 5 Vac
Voltage sensing type 1-phase
Voltage sensing range 170 ÷ 277 Vac
Maximum continuative field current 0 ÷ 5 Adc
Maximum forcing field current 0 ÷ 8 Adc
Maximum field voltage 100 Vdc
Field resistance 8 Ω ÷ 20 Ω
Regulation accuracy from no load to full load ±0.5 %
Steady state accuracy ±0.1 %
Accuracy with ±4% engine governing ±1 %
Thermal Drift ±0.5 %
Response time 1 cycle
Operating temperature -30°C ÷ +70°C
Storage temperature -40°C ÷ +80°C
Interface Potentiometers
Protection Under-frequency limiter
Internal fuse, replaceable
Control External potentiometer, 100 kΩ – 1 W
External DC voltage signal (0-10 V)
L 160mm
B 93.6mm
K 137mm
H 45mm
D 5.5mm
Weight 370g





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