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Automatic Voltage Regulator Sensing Input 240V

The SP Powerworld EA440 Compatible Voltage Regulator is a direct replacement for the discontinued Original Stamford* SX440 AVR.

Accepted worldwide as the only Quality and Legal aftermarket replacement. It's been designed to work in exactly the same way and operates at the same performance. It’s the same size, function and has the same wiring connections, it also comes with 12 months warranty. It's also Compatible with the following Newage Stamford models:

E000-24030 - Series 4 - 350-28700 - 350-24500 - E000-24010 - E000-24015 - Onan 305-0824.

Ex stock - shipped Worldwide. For GBP, EURO or USD pricing please contact us:

Sales: [email protected]

Office: [email protected]

Tel: +44 (0)115 923 2568 (United Kingdom)

Tel: (24-hour) +44 (0)7484709956 (United Kingdom)

*All manufacturer names, numbers, symbols and descriptions are used for reference purpose only and do not imply that any part is the product of these manufacturers.



  • Voltage Regulation < ±1%
  • Can Be Use In Parallel Operation
  • Adjustable DIP, TRIM & DROOP Function
  • Under Frequency Roll Off Protection
  • Sensing Voltage Loss Protection
  • Under Frequency LED Indicator
  • Soft Start Voltage Ramping


Model NO. EA440
Sensing Input Voltage 190~264 VAC 1 phase 2 wire
Frequency 50/60 Hz selectable
Output Voltage Max. 90 VDC at 207 VAC
Current Continuous 4A, Intermittent 10A for 10 sec.
Frequency Min. 15 Ohm
Voltage Regulation < ±1% (with 4% engine governing)
Voltage Build-up Residual volts at AVR terminal > 5 VAC
External Volts Adjustment ±8% with 1 K Ohm 1 watt trimmer
Unit Power Dissipation Max. 12 watt
Thermal Drift 0.04% per °C change in AVR ambient
Under Frequency Protection (UFRO) Set point 95% Hz
Slope 170% down to 30 Hz
Soft Start Ramping 2 sec.
Analogue Input Max. Input ±5 VDC
Sensitivity 1V for 5% generator volts
Input Resistance 1 K Ohm
Droop Input Burden 10 Ohm
Max. sensitivity 0.07A for 5% droop (PF=0)
Max. input 0.33A
Environment Operating Temperature : -40~70 °C
Storage Temperature : -40~85 °C
Relative Humidity : Maximum 95%
Vibration : 3.3G @ 100~2 KHz
AVR Controls Functions VOLT : Voltage Adjustment
STAB : Stability Adjustment
U/F*: To Set the U/F Knee Point (*U/F: Under Frequency Protection)
DROOP : Droop Adjustment
TRIM : Analogue Input Adjustment
DIP : U/V Rate Set
Dimensions 150.0 (L) x 135.0 (W) x 48.0 (H) mm
Weight 418 g ±2%

*Note : All features & specifications subject to change without notice.