# FF CZF-2 Phase Loss and Asymmetry Relay with Contactor Contact Monitoring 10A 1Z 4s

**URL:** https://aio.lv/en/product--ff-czf-2--12471738
**Data updated:** 2026-05-18 09:29 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CZF-2
**EAN:** 5908312593034
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 22.72 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-czf-2--12471738

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The FF CZF-2 is a phase loss and asymmetry monitoring relay designed to protect three-phase electrical equipment. It features integrated contactor contact monitoring, a 10A output, and a 4-second switch-off delay. This device ensures reliable operation by detecting voltage irregularities and preventing motor or load damage in industrial and residential electrical systems.

## Long description

The FF CZF-2 is a specialized phase loss and asymmetry monitoring relay engineered to safeguard three-phase electrical equipment from voltage irregularities. By continuously monitoring the supply voltage, this device detects phase loss or dangerous asymmetry, triggering a protective response to prevent damage to motors and sensitive electrical loads. It features integrated contactor contact monitoring, ensuring that the state of the contactor is verified alongside the phase status, providing a comprehensive safety solution for industrial and residential electrical installations.
Advantages
The primary benefit of the FF CZF-2 is its ability to provide proactive protection for three-phase systems, significantly reducing the risk of equipment failure due to power supply instability. The inclusion of contactor contact monitoring adds an extra layer of reliability, ensuring that the system does not operate if the contactor fails to engage or disengage correctly. With a robust 10A output and a precise 4-second switch-off delay, the relay effectively filters out transient voltage fluctuations, preventing nuisance tripping while maintaining high operational safety standards.
Suitable for
Three-phase electric motors
Industrial automation systems
HVAC equipment and heat pumps
Residential power distribution boards
Compressors and pumping stations
This relay may not be suitable for applications requiring instantaneous disconnection, as the 4-second delay is designed to ignore short-term voltage dips. It is also not intended for single-phase electrical systems or high-voltage industrial grids exceeding the rated operational parameters.
Key specifications
Monitoring function: Phase loss and phase asymmetry
Output contact: 1Z (normally open)
Maximum load current: 10A
Switch-off delay: 4 seconds
Integrated contactor monitoring: Yes
Application: Three-phase systems
The relay is designed for installation on a standard DIN rail within an electrical distribution cabinet. Wiring should be performed by a qualified electrician, ensuring that the phase inputs are connected to the corresponding terminals and the contactor control circuit is integrated into the relay output. Once installed, the device operates automatically, monitoring the supply and interrupting the control circuit if a fault is detected.
What to consider before purchase
Verify that your system voltage matches the relay specifications
Ensure the load current does not exceed the 10A rating
Confirm that the 4-second delay is appropriate for your specific motor or equipment protection requirements
Check available space on the DIN rail for installation
For optimal performance and safety, ensure all connections are tightened to the manufacturer's torque specifications and that the relay is protected from moisture and extreme temperatures within a suitable enclosure.

## FAQ

### How much does the FF CZF-2 Phase Loss and Asymmetry Relay cost, and is it available for purchase?

The price is 27.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 02.07.2026 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/12471738/68787872_large.webp