# FF phase loss and phase asymmetry relay CZF-BR 10A 1P 4s 40–80V

**URL:** https://aio.lv/en/product--ff-czf-br--12115569
**Data updated:** 2026-03-20 10:08 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CZF-BR
**EAN:** 5908312593119
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 22.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-czf-br--12115569

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Electromechanical protection relay FF CZF-BR for detection of phase loss and phase asymmetry. Single-pole (1P) device rated for 10 A, operating voltage range 40–80 V, with an adjustable or fixed 4-second response delay. Designed to protect motors and three-phase equipment from unbalanced supply conditions and phase interruptions, suitable for industrial and commercial control panels.

## Long description

The FF phase loss and phase asymmetry relay CZF-BR 10A 1P 4s 40–80V is an electromechanical protection device designed to detect loss of phase and significant phase voltage imbalance in three-phase supplies. The single-pole relay interrupts control circuits when asymmetry or phase failure occurs, helping to prevent damage to motors and other three-phase equipment. It operates within a 40–80 V operating voltage range and is rated for switching currents up to 10 A, with a 4-second response delay to avoid nuisance tripping from short transients.
Advantages
The relay offers reliable electromechanical operation compatible with standard control panels and motor protection schemes. Its single-pole design and 10 A rating make it suitable for a wide range of control circuits while keeping installation straightforward. The 4-second delay, fixed or adjustable depending on model variant, reduces false trips caused by brief voltage dips and ensures stable protection against sustained phase faults. The compact format and robust construction are intended for industrial and commercial environments.
Suitable for
Protection of three-phase motors controlled by contactors and starters
Monitoring and safeguarding of industrial control panels and switchgear
Detection of phase loss and imbalance in HVAC and pumping systems
Use in manufacturing equipment where phase continuity is critical
Key specifications
Function: phase loss and phase asymmetry detection
Poles: single-pole (1P) switching element
Rated switching current: 10 A
Operating voltage range: 40–80 V
Response delay: 4 seconds (fixed or adjustable variant)
Type: electromechanical relay suitable for control circuits
How to use
Install the unit in the control panel according to the wiring diagram, connecting the monitored phase inputs to the relay’s sensing terminals and the switching contact into the control circuit of the motor starter or contactor coil. Ensure supply voltage to the relay falls within the 40–80 V range and secure all terminations. Adjust or confirm the 4-second response delay if the model provides adjustment. After wiring, perform a functional test by simulating phase loss or imbalance and verify the relay opens the control circuit as expected.
Usage recommendations
Place the relay in a protected enclosure and avoid exposure to moisture, excessive vibration, and temperatures outside the equipment specifications. Combine CZF-BR protection with overload and short-circuit protection devices for comprehensive motor protection, and schedule periodic inspections and functional tests to confirm continued operation.

## FAQ

### How much does the FF CZF-BR phase loss/asymmetry relay 10A 1P cost, and is it available for purchase?

The price is 26.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 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 01.07.2026 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/12115569/67650777_large.webp