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Coleman Air C440-HVA Controller

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Coleman Air C440-HVA 440 Amp 12/24/48V Volt Wind/Solar Battery Charge Controller
Wind/Solar Diversion-Charge Load Controller.
440 Amp (In rush) Solenoid 12, 24 or 48 volts.
High contrast LED dual volt/amp meters with on/off switch.
Built in D/C Breakers.
Factory wired for both wind and solar.
8 x 12 Hoffman Box.
Reverse polarity protected.
Not recommended for use with solar in combination with lithium battery banks.

Click here to download the manual


Available in increments of 1
Total Percent Off Per Unit
$384.85 0% $384.8500
$738.91 4% $369.4560
$1,828.04 5% $365.6075
$3,463.65 10% $346.3650
$6,734.87 12.5% $336.7437
$8,178.06 15% $327.1225
$15,875.07 17.5% $317.5013
$30,788.00 20% $307.8800

Coleman Air

Coleman Air C440-HVA 440 Amp 12/24/48V Volt Wind/Solar Battery Charge Controller

440 Surge Amps - Diversion (Charge) Regulator

With Two High contrast Meters (both Volts and Amps)

Two D/C breakers/disconnects.

Fully wired, ready to go for both wind and solar.

Works directly with 12, 24 and 48 volt systems

Not recommended for use with lithium battery banks in the solar mode.  Lithium is approved for Wind/Hydro.

This diversion controller is the result of our many attempts to use the controllers currently on the market (offered by some of the largest names in the business), to work in conjunction with our wind turbines. None of the other diversion controllers on the market did what we needed a diversion controller to do. So we designed our own and added all of the features that are truly needed in a diversion controller.

Built around a solenoid that we have tested (tortured) in-house at over 460 amps, this controller is user adjustable, has a large enclosure, microprocessor controlled, test button and battery status indications.

Click here for information on the SEA-440 relay and Coleman Air C440 testing.

This controller was designed for wind/hydro systems, but also works for solar systems up to 125 Amps.

Use this controller to regulate and prevent battery overcharge in:

  • Solar Systems
  • Wind Systems
  • Hydro System


Some of the key features of this controller are:

  • Microprocessor controlled -- This is very important for both stability and functionality.
  • User changeable settings -- Several controllers on the market set the dump level, and that's that!
  • Super high surge amp rating. Uses the same relay as the SEA-440.
  • Works directly with 12, 24 or 48 volt systems.
  • High Contrast LED battery voltage. - Several controllers do not tell you what's going on - This one does!
  • High Contrast LED turbine amperage meter -- Measures 3 digits to the left of the decimal, 2 digits to the right.
  • Meters can be shut using the on/off switch.
  • Two factory installed, fully wired D/C breakers and disconnects.
  • Entire unit is wired and ready to go for both wind and solar.
  • Battery status LED
  • Push to test. -- Ever wonder if your controller & load are working OK?
  • Large (8" x 12") solid steel enclosure, with multiple conduit knockouts
  • Large enough terminal blocks that you can actually terminate large wire (See notes below.)
  • The electronics are fully isolated from the enclosure, no ground loops.
  • Draws almost no energy while monitoring (all electronics must use some power, to work -- this is a miser)
  • Reverse Polarity protected.



Some specifics about the points made above.

The microprocessor is the heart of the controller. It is given the battery voltage and the user changeable trip points. This information is analyzed and acted upon.


The Battery level is checked, and based on that info, the Green LED flashes or is illuminated as follows

    1. (One) Flash indicates the battery is less than 12 volts (12 volt system - Double for 24 etc)
    2. (Two) Flashes indicates the battery is 12 to 12.5V
    3. (Three) Flashes indicates the battery is 12.6 to 13v
    4. (Four) Flashes indicate the battery is 13.1 to 13.5V
    5. ( Five) Flashes indicates the battery is above 13.5V but less than 13.9V (Settings are adjustable)

Steady green means the battery is full.

The red LED is illuminated when the battery is being dumped at 14.5v (or the charge source diverted.)

The dump remains active for a minimum of 5 seconds, at which time it is checked by the microprocessor. If battery voltage drops below the "Dump Cancel " level, the dump is disabled, otherwise the dump is continued and rechecked every 5 seconds.

When you click the "TEST" push-button - the 5 second cycle is started (one time, unless the batteries are within the "Dump Start" and "Dump Cancel" zone.)

Settings are user changeable! By simply turning a simple potentiometer with a small screwdriver, you can quickly adjust the trip point.

The enclosure is heavy gauge, solid steel, ready to mount. -- No plastic, no junk, simple and rugged.

This Hoffman pull box is perfect for terminating larger wire. It has multiple knockouts on each side of the box. The box measures 8.25" x 12". The electronics are fully isolated from the box.



About load diversion.

Several schools of thought on the subject.

  1. The source of power (wind turbine, solar panels etc.) -- should remain connected to the batteries while the dump is active.
  2. The source should be diverted to the load directly and disconnected from the batteries.

We happen to believe that is far better to leave the wind turbine connected to the batteries at all times. Why? When you remove the battery level voltage from a wind turbine and send its power directly to a load, then it sees for all practical purposes a short circuit (depending on the resistance of the load and lead wires.) This may cause the turbine blades to slow dramatically and in some cases bring it to a halt. This braking action can cause heat build up in the stator if it is repeated every few seconds or so (if the battery is just a little over the top). When you allow the turbine to see the batteries, along with the load, the turbine remains more within its design realm -- always a good thing.

The internal relay is configured to dump the batteries along with the source, but if you desire to disconnect the source from the batteries and send it to the load directly, simply utilize the N/C contacts of the relay as well. We'll be happy to send you a diagram -- this is a very simple to accomplish.



How to compare this controller to others on ebay (or anywhere!)

  • Can they handle 48 volt systems directly?
  • Do they have battery status indication?
  • Do they show you the the current flow from your turbine?
  • Do they have multiple, pre-installed, pre-wired circuit breakers?
  • Do the meters have an on/off switch?
  • Do they have a dump active indication?
  • Are the dump levels user changeable?
  • Are they microprocessor controlled?
  • Do they come with a enclosure that's actually ready to use?
  • Do they handle the amperage you need?
  • Do they have a dump test capability?
  • Are they reverse polarity protected?

    When you compare this controller to the others, you will see why we built it and why we know you'll love it.

    ** 150 amp heat activated breakers have been installed to limit continuous current to 150 amps. Instantaneous current handling of this unit not to exceed 440 amps. **

    Description QTY Price/Unit Extended

    440 amp, HV series controller





    Dual Amp meter and shunt/with power supply





    150 Amp, circuit breakers





    1/4 inch stainless termination nuts





    1/4 inch stainless washers





    1/4 inch stainless termination studs





    Termination buss bars. lugs and wires





    Everything mounted, pre-wired, ready to go! Easily saves several hours of work and frustration. This fully wired unit provides a very efficient interconnect environment that would be very difficult to achieve in the field.


    Cost of individual components







    Ready to go. built to last, right here in the USA.




    ** 150 amp heat activated breakers have been installed to limit continuous current to 150 amps **

    ** This unit is rated at 125 amps continuous solar input current. **



    Shipping And Returns
    Our shipping charges are basically what it cost us to ship. International shipping rates via the USPS for this weight are much higher than you might expect. Please click HERE to view just how much these charges are, and you will see that our rates are just what it cost. We would charge less, if it cost us less.

    Due to major delays in customs, we no longer ship to Italy.

    To our International customers. We cannot misrepresent the price of the products being shipped to you. You are responsible for any and all tariffs, duties or import fees imposed by your country or customs.

    Returned items must be in their original condition and fully resalable. Returns may incur a 20% restocking fee. Damages that occur during return transit will be liable to the buyer. Buyer is responsible for all tariffs, customs fees, VATs.





    By popular request, here are a few documents that show just how all of these components tie together.



    If you have any questions, please do not hesitate to ask, we are happy to help.

    Thanks For Looking!

    Coleman Air -- Empowering Innovation

    Wind and Solar Controllers, Electronics, Hardware & Accessories perfect for the DIY'er.



     Empowering Innovation


    Click here to download the manual

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