# Phase failure and asymmetry relay FF CZF 10A 1-pole 4 s release, 45 V control

**URL:** https://aio.lv/en/product--ff-czf--5114235
**Data updated:** 2026-03-20 09:45 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CZF
**EAN:** 5908312593010
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 22.49 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 18.59 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-czf--5114235

## 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

FF CZF is a phase failure and phase asymmetry relay designed to monitor three-phase supply and protect equipment from phase loss or unbalanced voltages. Rated for 10 A switching and one changeover contact (1-pole), it has a 4-second release time and operates with 45 V control. Suitable for industrial motor protection, control panels and automation systems.

## Long description

FF CZF phase failure and asymmetry relay monitors three-phase supply to detect phase loss and significant voltage imbalance. Designed for integration into control panels and automation systems, this relay provides one changeover contact (1-pole) rated for switching currents up to 10 A and operates from a 45 V control voltage. The built-in 4-second release delay helps avoid nuisance trips caused by short disturbances while ensuring equipment protection when a sustained fault is detected.
Advantages
The relay combines compact single-pole switching with selective monitoring of phase presence and asymmetry, enabling protection for motors and three-phase equipment without occupying excessive panel space. A defined 4 s release time reduces false trips from transient fluctuations, and the 45 V control rating allows compatibility with low-voltage control circuits. Its straightforward electrical characteristics make it suitable for retrofit or new installations in industrial and commercial electrical systems.
Suitable for
Protection of three-phase electric motors from phase loss and imbalance
Control and protection in motor starters and contactor circuits
Integration into distribution and control panels in industrial environments
Use in automation systems that require phase monitoring with a single changeover contact
Key specifications
Operating function: phase failure and phase asymmetry detection
Contact configuration: one changeover contact (1-pole)
Switching capacity: up to 10 A
Control voltage: 45 V
Release time (delay): 4 seconds
Mounting: panel or DIN-rail compatible (check device form factor before installation)
How to use
Install the relay in the control panel according to the system wiring diagram, ensuring correct connection of the three-phase inputs and the 45 V control supply. Wire the changeover contact into the motor starter or protection circuit so that the relay interrupts the load or control coil when a phase fault or unacceptable asymmetry is detected. Verify mechanical mounting and tighten terminals to the recommended torque. After wiring, perform functional tests by simulating phase loss and imbalance to confirm correct trip and release behavior with the 4 s delay.
Usage recommendations
For reliable operation, use the relay within its rated switching current and control voltage, and ensure the surrounding environment meets the product's electrical installation standards. Periodically inspect terminal connections and retest phase detection functions after major system changes or maintenance.

## FAQ

### How much does the FF CZF phase failure and asymmetry relay 10A cost, and is it available for purchase?

The price is 22.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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/5114235/51372449_large.webp