# F&F CP-734 3-Phase Voltage Monitoring Relay 3x(50-450V)+N, 3Z, 8A, 170-210V AC

**URL:** https://aio.lv/en/product--ff-cp-734--12475559
**Data updated:** 2026-05-19 13:45 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CP-734
**EAN:** 5908312591337
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 53.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 44.62 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-cp-734--12475559

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The F&F CP-734 is a 3-phase voltage monitoring relay designed for industrial and residential electrical systems. It features a wide monitoring range of 3x(50-450V)+N and an adjustable threshold of 170-210V AC. Equipped with 3Z contacts and an 8A rating, this device ensures reliable protection against voltage fluctuations, phase loss, or asymmetry, maintaining the safety and operational integrity of connected electrical equipment.

## Long description

The F&F CP-734 is a professional 3-phase voltage monitoring relay engineered to safeguard electrical installations in both industrial and residential environments. This device continuously monitors the supply voltage across three phases and the neutral wire, providing comprehensive protection against critical power quality issues such as voltage fluctuations, phase loss, and phase asymmetry. By maintaining strict control over the electrical parameters, the relay ensures the operational longevity and safety of sensitive equipment connected to the network.
Advantages
The primary benefit of the F&F CP-734 lies in its wide monitoring range, which allows it to operate effectively across diverse power supply conditions. Its precise adjustable threshold settings provide flexibility for various application requirements, ensuring that the relay triggers only when necessary. The robust construction and reliable 3Z contact configuration offer high durability and consistent performance, minimizing the risk of equipment damage caused by unstable power grids. Furthermore, the compact design facilitates easy integration into standard electrical distribution boards.
Suitable for
Industrial automation systems
Residential electrical distribution panels
Protection of three-phase motors and compressors
HVAC control systems
Sensitive electronic equipment requiring stable voltage
This device may not be suitable for applications requiring extremely high current switching beyond its 8A rating without the use of additional contactors. It is also not intended for use in DC power systems or environments where the voltage exceeds the specified 3x(50-450V)+N range.
Key specifications
Monitoring range: 3x(50-450V)+N
Adjustable threshold: 170-210V AC
Contact configuration: 3Z
Maximum current rating: 8A
Phase monitoring: Voltage, loss, and asymmetry
To use the F&F CP-734, it must be installed by a qualified electrician within a standard electrical enclosure. The device is connected to the three-phase supply lines and the neutral conductor according to the wiring diagram provided on the housing. Once connected, the threshold voltage is set using the adjustment dial to match the specific requirements of the protected equipment. The relay will then automatically monitor the input and disconnect the output contacts if the voltage deviates outside the defined parameters.
What to consider before purchase
Verify that your system voltage falls within the 3x(50-450V)+N range
Ensure the 8A contact rating is sufficient for your load or plan for an external contactor
Confirm that the adjustable threshold of 170-210V AC meets your specific protection needs
Check available space in your distribution board for installation
Usage recommendations: Regularly inspect the relay status indicators to ensure the system is operating within normal parameters. Periodic testing of the protection function is recommended to maintain optimal safety standards.

## FAQ

### How much does the F&F CP-734 3-Phase Voltage Monitoring Relay cost, and is it available for purchase?

The price is 53.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 08.07.2026 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/12475559/68796003_large.webp