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SP Powerworld

SP Powerworld EA440 AVR

SP Powerworld EA440 AVR

Regular price £174.00 GBP
Regular price Sale price £174.00 GBP
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SP Powerworld EA440 Automatic Voltage Regulator is a direct replacement for the Original Stamford* SX440).

£145.00 plus VAT

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 EURO or USD pricing please contact us:


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 less than +/-1%
  • Can be use in parallel operation
  • Adjustable DIP, TRIM and DROOP function
  • Under frequency roll Off protection
  • Sensing voltage loss protection
  • Under frequency LED indicator
  • Soft start voltage ramping
  • Specifications: 

    Sensing Input
    • Voltage 190 to 264 Vac 1 phase 2 wire
    • Frequency 50/60 Hz selectable
    Excitation Output
    • Voltage Max. 90 Vdc @ power input 207 Vac
    • Current Continuous 4A Intermittent 10A for 10 seconds
    • Resistance Min. 15 ohms
    External Voltage Adjustment
    • Max. +/-8% @ 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
    Quadrature Droop Input
    • Burden 10 ohms
    • Max. input 0.33A
    • Max. sensitivity 0.07A for 5% droop (PF=0)
    Analogue Voltage Input
    • Input resistance 1K ohm
    • Max. input +/-5 Vdc
    • Sensitivity 1V for 5% generator volts
    Under Frequency Protection
    (Factory Presets)
    • Set point 95% Hz
    • Slope 170% down to 30 Hz
    Voltage Thermal Drift
    • Less than 3% at temperature range -40 to +70 °C

    AVR Control Functions

    • Voltage adjustment
    • Stability adjustment
    • Setting under frequency protection knee point
    • Droop adjustment
    • Analogue input adjustment
    • U/V rate set


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

    Physical Specifications

    • 150.0 (L) x 135.0 (W) x 48.0 (H) mm
    • 418 g +/-2%

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    • Genuine Products with Full Warranty

      We are aware that there are poorly made illegal Chinese counterfeit models available on the market. Please note our products are Genuine, come with full warranty and have been sourced directly from the factory.

    • Worldwide Shipping

      All items are shipped from the United Kingdom and we cover all of Europe and the rest of the world. For an accurate DHL Quotation please contact us.