# F&F CP-733 3-Phase Voltage Monitoring Relay 3x(50-450V)+N, 8A, 170-210V AC

**URL:** https://aio.lv/en/product--ff-cp-733--12446378
**Data updated:** 2026-05-27 17:57 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CP-733
**EAN:** 5908312596196
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 54.49 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 45.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-cp-733--12446378

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The F&F CP-733 is a 3-phase voltage monitoring relay designed for industrial and residential electrical systems. It features a measurement range of 3x(50-450V)+N and an output current of 8A. This device provides reliable protection against voltage fluctuations, including under-voltage and over-voltage conditions, with an adjustable range of 170-210V AC, ensuring the safety of connected electrical equipment.

## Long description

The F&F CP-733 is a high-precision 3-phase voltage monitoring relay engineered to safeguard electrical installations in both industrial and residential environments. By continuously monitoring the voltage levels across three phases and the neutral conductor, this device ensures that connected equipment operates within safe parameters. It is specifically designed to detect and respond to voltage irregularities, providing a robust defense against potential damage caused by unstable power supply conditions.
Advantages
The primary benefit of the F&F CP-733 is its ability to provide comprehensive protection against both under-voltage and over-voltage scenarios. Its wide measurement range of 3x(50-450V)+N allows for versatile application across various power grid configurations. The adjustable threshold settings provide users with the flexibility to tailor the protection levels to the specific requirements of their sensitive electrical equipment, thereby extending the operational lifespan of connected devices and reducing the risk of costly electrical failures.
Suitable for
Industrial automation systems
Residential electrical distribution boards
Protection of sensitive electronic equipment
Monitoring 3-phase power supply stability
This relay may not be suitable for applications requiring high-power switching beyond its 8A output capacity without the use of additional contactors. It is also not intended for use in environments where the voltage fluctuations fall outside the specified measurement range or where specialized DC monitoring is required.
Key specifications
Measurement range: 3x(50-450V)+N
Output current: 8A
Adjustable voltage range: 170-210V AC
Phase monitoring: 3-phase with neutral
The device is designed for mounting on standard DIN rails within electrical cabinets. Installation should be performed by a qualified professional to ensure all connections are secure and compliant with local electrical safety regulations. Once installed, the relay automatically begins monitoring the incoming voltage and will trigger the output relay if the measured values deviate from the configured safety thresholds.
What to consider before purchase
Verify that the 8A output current is sufficient for your load requirements
Ensure the voltage thresholds align with your equipment specifications
Confirm compatibility with your existing 3-phase electrical system
Check available space in your distribution board for DIN rail mounting
For optimal performance, regularly inspect the electrical connections for tightness and ensure the device is kept free from excessive dust and moisture within the distribution cabinet.

## FAQ

### How much does the F&F CP-733 3-Phase Voltage Monitoring Relay cost, and is it available for purchase?

The price is 54.49 € (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 23.07.2026 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/12446378/68749526_large.webp