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Frequency converter E-POOL TT3-11A, 400 V, up to 4 kW (5.5 HP)

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E-Pool TT3-11A for motors up to 4 kW specifically designed for pool operations

Control system with frequency or speed modulation for high comfort and operational cost minimization:

  • Very quiet operation
  • Ability to adjust motor power to the desired flow rate
  • Ability to use with various pumps (centrifugal, vertical, submersible, with induction or PM motor)
  • Clear LCD display, easy operation, Czech language
  • Operational cost savings
  • Operational protection (against surge, input voltage fluctuations, dry running, excessive operational pressure, pipe bursts, etc.)
  • Variation 11A for motor up to 4.0 kW (5.5 HP)
  • Variation 30A for motor 5.5--15 kW (7.5--20 HP)
  • Communication between up to 8 E-Pool units

To the frequency converter in the 11A variation, you can purchase the expansion communication module 57D0400, through which you can connect to the converter:

  • ModBus communication
  • 4-20mA input
  • 0-10 V input (e.g. potentiometer)
  • Temperature probe
  • 2x Digital input
More Information
Product type:Inverter frequency converter
Power consumptionup to 4 kW
Voltage:400 V AC
Engine bearings with life-lasting lubrication:No
For sea water:No
Weight:4.6 kg
On palette:0
In group packs:1


This product has 12 month warranty. In the event of a product breakdown within the warranty period, you should contact us as soon as possible.

The Buyer has the right to make his defective goods claim within 12 months of accepting the goods. If a defect manifests itself within six months of the Buyer accepting the goods, such goods are presumed to be defective at acceptance unless the Seller proves otherwise.


Should you require any further information, please email where we will respond to your request quickly.

More information Terms and conditions


This product is in stock at our warehouse and is ready for Standard or Express delivery Service.

Delivery – Mainland UK

Delivery Times: - Standard delivery: 1-2 weeks

Most of our products, when ordered by 12 PM  Monday to Friday, will be dispatched for next-day delivery . In cases where items are not in stock or are special orders, delivery times may be longer.

Rest assured, we will contact you beforehand to provide an estimated delivery date.

If you have specific delivery instructions, such as gifting or a required delivery date, please include them in your order.

 If your billing address is different from the delivery address, you can provide the latter separately in the order form. We will accommodate the delivery address if possible under contractual conditions.

Please note that some areas of Scotland, Northern Ireland, the Isle of Man, and the Isle of Wight may incur extra carriage charges.

Please check your delivery

If you sign for a delivery as "OK" and later discover that it's damaged, our carriers will not accept liability, and you may be charged for the damaged items. In such cases, we will make a delivery charge for replacement items.

Please sign for your delivery as "UNCHECKED" if you're unable to thoroughly check it upon receipt. If there is any damage to the package, no matter how small, please sign for it as "DAMAGED". We cannot make claims for any damaged items that haven't been signed for as "UNCHECKED" or "DAMAGED".

If you sign for your goods as "DAMAGED", please notify us within 72 hours by email at

More information Terms and conditions

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