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  Item found in the following categories;
> Speed Controllers (ESC) > All Speed Controllers (ESC)
> Speed Controllers (ESC) > Plane ESC > HobbyKing ESC
> Speed Controllers (ESC) > 20 to 39 Amp


Hobby King 30A ESC 3A UBEC

Hobby King 30A ESC 3A UBEC

Constant Current: 30A
Burst Current: 40A
Battery: 2-4S Lipoly / 5-12s NiXX
BEC: 5v / 3A
Motor Type: Sensorless Brushless
Size: 54 x 26 11mm
Weight: 32g

Programming Functions:
Battery Type: Lipo /NiXX
Brake: On / Off
Voltage Protection: Low / Mid / High
Protection mode: Reduce power / Cut off power
Timing: Auto / High / Low
Startup: Fast / Normal / Soft
PWM Frequency: 8k / 16k
Helicopter mode: Off / 5sec / 15sec (Start up delay)

User manual can be downloaded from the files Tab.


Shipped from:
International Warehouse



  • PolyMax 3.5mm Gold Connectors 10 PAIRS (20PC)

    Combo Price: $1.69   IN STOCK
    Add to Cart

  • HXT 3.5mm Gold Connector w/ Protector (10pcs/set)

    Combo Price: $2.91   IN STOCK
    Add to Cart

  • Soldering Iron 230V 80W w/ Spare Tip

    Combo Price: $3.95   BACKORDER
    Add to Cart

  • Nylon XT60 Connectors Male/Female (5 pairs) GENUINE

    Combo Price: $3.75   IN STOCK
    Add to Cart

  • HobbyKing ESC Programming Card

    Combo Price: $6.15   BACKORDER
    Add to Cart

Further discounts available for registered & logged-in customers.
 Customer rated
Total of 447 discussions.
Armando  2 points - 2/11/2016
Hi Michael. Where did you find the procedure to reset to factory? I have problem similar to yours.
Michele  2 points - 2/7/2016
Sorry again, I found how to reset the factory setup, but I can't get the motor run. The Ubec enters the programming mode when the stick is in the low position (I try with the reversed channel on the Futaba transmitter, but same results: the Ubec enter the setting mode when the stick is in the reversed low position). Anyway, when I turn on the Ubec without entering the programming mode, it makes some sounds (4 bibs and a different tone one- note: 3s lipo batteries) then sits there, servos move but the engine doesn't sart. I checked all the soldering, but still...
Michele  2 points - 2/7/2016
Sorry, but HOW do you return to factory setting? The manual says you can, but doesn't say how... can somebody help? Thanks
robert  1 points - 1/31/2016
It says you can down load the manual from the files tab. Where is that at ? can't find it .
 meadowhay 1004 points
Hi Robert. It's right above here - the tabs go Discussion - Reviews - Videos - File (Purple)
CHANIN A.  1 points - 1/14/2016
what plane esc can i buy with out programming it!
Customer Reviews
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Overall Rating
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excellent cheap ESC, exactly as described, easy to program with TX and very good throttle response. I'm using it with a 4200kv outrunner and 3s lipo with 64mm EDF, great setup!. thanks HK

4 comments. Reply..

Overall Rating
Like it?
Picked this up a week or so ago the unit came in perfect condition. programming was not required as it worked configured out of the bag. it would be beneficial to have a detailed spec sheet on beep config packaged w eack hk unit sold rather than hunting online or waiting for someone to post. would buy or reco again

1 comment. Reply..

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I have bought this and receivied few days ago. It was well packed. I had 1 flight with it, and it was good. No problems occured during the flight. After flight it was barely hot. I recommend this esc, because it's possible to program, and it has good price/quality ratio. :)

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Good quality and well built, pre progged from box with generic settings, but easily programmed from TX. Bang on the mark for a speed controller

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It is worth spending the extra dollar or so to have the 3.5 mm connectors already on these esc's. This was money well spent and can handle the rated 30 Amps.

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