# FF CZF-BT-TRMS Phase Sequence and Loss Monitoring Relay

**URL:** https://aio.lv/en/product--ff-czf-bt-trms--12452818
**Data updated:** 2026-05-18 02:43 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CZF-BT-TRMS
**EAN:** 5902431673790
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-czf-bt-trms--12452818

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The FF CZF-BT-TRMS is a professional phase sequence and loss monitoring relay designed for industrial and residential electrical systems. It provides reliable protection by detecting phase failure or incorrect sequence, ensuring the safety of connected equipment. This TRMS-enabled device offers precise monitoring, making it an essential component for maintaining stable power supply conditions in various electrical installations.

## Long description

The FF CZF-BT-TRMS is a professional phase sequence and loss monitoring relay engineered to safeguard industrial and residential electrical systems. By continuously monitoring the supply voltage, this device detects phase failures and incorrect phase sequences, providing a critical layer of protection for sensitive electrical equipment. Utilizing True RMS (TRMS) measurement technology, the relay ensures high precision and reliability even in environments with distorted voltage waveforms, making it an indispensable component for maintaining stable and safe power distribution.
Advantages
The primary benefit of the FF CZF-BT-TRMS is its ability to prevent damage to motors and other three-phase equipment caused by phase loss or improper connection order. Its TRMS measurement capability allows for accurate operation regardless of the signal shape, ensuring consistent performance in modern electrical grids. The compact design facilitates easy installation in standard distribution boards, while the robust internal circuitry provides long-term operational stability and rapid response times to electrical faults.
Suitable for
Three-phase motor protection
Industrial automation systems
Residential power distribution boards
HVAC control panels
Pump and compressor control systems
This device may not be suitable for applications requiring monitoring of single-phase systems or specialized DC power circuits. It is also not intended for use in environments where the voltage levels exceed the specified operational range of the relay, as this could lead to device failure or inaccurate monitoring results.
Key specifications
Monitoring type: Phase sequence and phase loss
Measurement method: True RMS (TRMS)
System compatibility: Three-phase networks
Mounting type: DIN rail
Operational reliability: High-precision fault detection
To use the FF CZF-BT-TRMS, ensure it is installed by a qualified professional in accordance with local electrical regulations. The device should be mounted on a standard DIN rail within a distribution cabinet. Connect the three-phase supply lines to the designated input terminals and wire the output relay contacts into the control circuit of the equipment being protected. Once powered, the device will automatically monitor the phase parameters and engage the output relay when conditions are within the normal operating range.
What to consider before purchase
Verify that your electrical system is a three-phase configuration
Ensure the voltage levels of your installation match the relay specifications
Confirm available space on the DIN rail within your distribution board
Check if your specific equipment requires additional protection features beyond phase monitoring
Usage recommendations: Regularly inspect the status indicators on the relay to ensure the system is operating within normal parameters. If the relay trips, investigate the power supply for phase loss or sequence errors before attempting to reset the system.

## FAQ

### How much does the FF CZF-BT-TRMS Phase Monitoring Relay cost, and is it available for purchase?

The price is 35.49 € (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 03.07.2026 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/12452818/68755392_large.webp