# FF CP-500 3-Phase Voltage Monitoring Relay, 2x8A, 3x500V, 150-210V AC, Without Neutral

**URL:** https://aio.lv/en/product--ff-cp-500--12469051
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** CP-500
**EAN:** 5908312595779
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 135.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 112.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-cp-500--12469051

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The FF CP-500 is a 3-phase voltage monitoring relay designed for industrial and residential electrical systems. It features two 8A outputs and operates at 3x500V with an adjustable voltage range of 150-210V AC. This device functions without a neutral wire, providing reliable protection against voltage drops and phase failures to ensure the safety and stability of connected electrical equipment.

## Long description

The FF CP-500 is a professional 3-phase voltage monitoring relay engineered to protect electrical equipment in both industrial and residential environments. This device is specifically designed to operate in systems without a neutral wire, offering a robust solution for monitoring voltage levels and detecting phase failures. By continuously analyzing the supply voltage, it helps prevent damage to sensitive machinery and electronics caused by voltage drops or phase irregularities.
Advantages
The primary benefit of the FF CP-500 is its ability to provide reliable protection in 3-phase networks where a neutral connection is unavailable. Its dual 8A output configuration allows for versatile integration into control circuits, ensuring that equipment is disconnected promptly when voltage parameters fall outside the defined safety thresholds. The adjustable voltage range provides flexibility for various installation requirements, making it a dependable component for maintaining system stability and operational safety.
Suitable for
Industrial automation systems
Residential 3-phase electrical installations
Protection of motors and compressors
Monitoring power supply stability in facilities without neutral lines
This relay may not be suitable for single-phase electrical systems or applications that require a neutral wire for operation. It is also not intended for use in high-voltage power distribution grids exceeding its specified voltage ratings.
Key specifications
Operating voltage: 3x500V AC
Voltage monitoring range: 150-210V AC
Output configuration: 2x8A
System compatibility: 3-phase without neutral
To use the FF CP-500, it must be installed by a qualified electrician into a standard electrical distribution board. The device should be wired according to the provided technical diagram, ensuring that all phase connections are secure. Once installed, the voltage thresholds should be calibrated based on the specific requirements of the connected equipment to ensure optimal protection.
What to consider before purchase
Verify that your electrical system is a 3-phase configuration without a neutral wire
Ensure the load requirements do not exceed the 8A output capacity
Confirm the operating voltage of your network matches the 3x500V specification
Usage recommendations: Regularly inspect the relay for signs of wear and verify that the settings remain calibrated to your equipment's safety requirements to ensure continuous and effective protection.

## FAQ

### How much does the FF CP-500 3-Phase Voltage Monitoring Relay cost, and is it available for purchase?

The price is 135.99 € (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 16.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can FF CP-500 3-Phase Voltage Monitoring Relay be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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

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