# F&F CKF-BT Phase Sequence and Asymmetry Monitoring Relay 10A 1P 0.5-15s 40-80V

**URL:** https://aio.lv/en/product--ff-ckf-bt--12449346
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CKF-BT
**EAN:** 5908312592488
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 31.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 26.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-ckf-bt--12449346

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The F&F CKF-BT is a specialized monitoring relay designed to protect electrical equipment by detecting phase sequence, loss, and asymmetry. It features a 10A output, 1P configuration, and an adjustable delay time of 0.5-15 seconds for 40-80V systems. This device ensures reliable operation of motors and industrial installations by disconnecting the circuit in case of power supply irregularities.

## Long description

The F&F CKF-BT is a precision-engineered monitoring relay designed to safeguard electrical equipment by continuously analyzing the status of the power supply. This device is specifically engineered to detect phase sequence, phase loss, and phase asymmetry, ensuring that motors and sensitive industrial installations are protected from damage caused by power irregularities. With a 10A output and a configurable delay time, it provides a reliable solution for maintaining operational stability in 40-80V systems.
Advantages
This monitoring relay offers robust protection by reacting quickly to voltage fluctuations and phase errors, which helps prevent costly equipment failure and downtime. The adjustable delay feature allows users to fine-tune the response time to avoid unnecessary tripping during minor, transient power disturbances. Its compact design and high-quality construction ensure long-term reliability and ease of integration into existing electrical panels and control systems.
Suitable for
Protection of three-phase motors against phase loss
Monitoring industrial control systems for phase sequence errors
Safeguarding equipment in 40-80V power networks
Preventing damage from phase asymmetry in electrical installations
When it may not be suitable
This device is not intended for use in systems operating outside the specified 40-80V voltage range. It is also not suitable for applications requiring multi-phase output switching, as it features a 1P configuration.
Key specifications
Operating voltage: 40-80V
Output contact: 1P (single pole)
Maximum current: 10A
Adjustable delay time: 0.5 to 15 seconds
Monitored parameters: Phase sequence, phase loss, and phase asymmetry
How to use
The relay should be installed by a qualified professional within an electrical distribution board. Connect the power supply lines to the designated input terminals according to the wiring diagram provided with the device. Once connected, use the adjustment dial to set the desired delay time based on the specific requirements of the connected equipment. The device will automatically monitor the supply and disconnect the output circuit if an irregularity is detected.
What to consider before purchase
Verify that your system voltage falls within the 40-80V range
Ensure the 10A current rating is sufficient for your load requirements
Confirm that the 1P configuration meets your control circuit needs
Check available space in your electrical enclosure for mounting
Usage recommendations
Regularly inspect the relay status indicators to ensure the system is operating within normal parameters and perform periodic testing of the disconnection function to guarantee continued protection.

## FAQ

### How much does the F&F CKF-BT Phase Monitoring Relay 10A cost, and is it available for purchase?

The price is 31.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All FF products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized FF service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12449346/68752196_large.webp