McPherson Controls | Voltage Regulator | SS341

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McPherson Controls | Voltage Regulator | SS341


  • Replacement for Newage MX341 
  • McPherson Controls Self Excited Automatic Voltage Regulator 
  • Permanent Magnet Generator (PMG) AVR 
  • Not a genuine Newage product 

Available on backorder. Usually ships in 3 to 5 business days.

can be export

Product can be export to the Caribbean, Latin America and other parts of the world.

Chat with one of our customer service representatives or call us at +1.954.657.7777 to access the list of recommended international carriers (forwarders) for shipping from USA to your country. (Shipping within the continental USA is free for orders over US$200).

SKU: SS341.
Additional Info


Details and Specifications

  • Voltage regulation less than +/-1% 
  • 3 phase PMG power input 
  • For use in parallel operation 
  • Adjustable EXC TRIP, DIP, TRIM and DROOP functions 
  • Soft start voltage ramping 
  • Under frequency roll off protection 
  • UFRO and over excitation LED indicators 

Product Specifications:

Sensing Input Voltage 190 to 264 Vac 1 phase 2 wire 

Frequency 50/60 Hz selectable 

Power Input (PMG) Voltage 170 to 220 Vac 3 phase 3 wire 

Current 3A / phase 

Frequency 100 to 120 Hz nominal 

Excitation Output Voltage Max. 120 Vdc @ power input 220 Vac 

Current Continuous 2.7A Intermittent 6A for 10 seconds 

Resistance Min. 15 ohms 

External Voltage Adjustment Max. +/-10% @ 1K ohm 1 watt potentiometer 
Voltage Regulation Less than +/-1% (with 4% engine governing) 
Build Up Voltage 5Vac residual volts at power input terminal 
Soft Start Ramp Time 2 seconds +/-10% 
Static Power Dissipation Max. 12 watts 
Analogue Voltage Input Input Resistance 1K ohm 

Max. Input +/-5 Vdc 

Sensitivity 1V for 5% generator volt 

Quadrature Droop Input Burden 10 ohms 

Max. Input 0.33A 

Max. Sensitivity 0.07A for 5% droop (PF=0) 

Over Voltage Detector Input Set Point 300V 

Time Delay 1 second (fixed) 

CB Trip Coil Volts 10 to 30 Vdc / 0.5 Amp 

CB trip coil resistance 20 to 60 ohms 

Current Limit Input Burden 10 ohms 

Sensitivity Range 0.5 to 1A 

Under Frequency Protection (Factory Presets) Set Point 95% Hz 

Slope 170% down to 30 Hz 

Over Excitation Protection Set Point 90 Vdc 

Time Delay 10 seconds (fixed) 

Voltage Thermal Drift Less than 3% at temperature range -40 to +70 °C 


AVR Control Functions 
VOLT Voltage adjustment 
STAB Stability adjustment 
UFRO Setting under frequency protection knee point 
DROOP To set the Droop to 5% at PF=0 
TRIM To optimize analogue input sensitivity 
EXC TRIP Over excitation trip level set 
DIP Hz related voltage DIP set 


Operating Temperature -40 to +70 °C 
Storage Temperature -40 to +85 °C 
Relative Humidity Max. 95% 
Vibration 3.3 Gs @ 100 to 2K Hz 


Physical Specifications 
Dimensions 150.0 (L) x 135.0 (W) x 48.0 (H) mm 
Weight 394 g +/-2% 

PRODUCT Related documents:

SS341 Manual

Additional Info
Weight2 lbs
Dimensions6.75 × 6.25 × 2.25 in


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