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Vendor: TENSE

Three-phase monitoring/protection relay for tripping/asymmetric/following phase control

Barcode: FKV-03N
€20,00 €16,53 excl. VAT
€20,00 €16,53 excl. VAT
12 in stock
All items are in stock and shipped from the Czech Republic. Delivery takes 3–8 days.
Neutral: No
  • Description
  • Payment methods
  • Warranty

Phase Control Relay FKV-03N - TENSE

Product Description:
The FKV-03N is a three-phase control relay designed to protect electric motors from incorrect phase sequence, phase loss, and excessive asymmetry. This relay does not include neutral conductor control, and the asymmetry is fixed at 40%.

This relay is ideally suited for industrial applications where fast and reliable motor protection is required against damage caused by incorrect connections or voltage fluctuations.

Operating Algorithm

  1. Normal Operation:

    • All three phases are present.

    • Phase sequence is correct.

    • Voltage asymmetry is within tolerance ≤ 40%.

    • The relay is in working state - contacts 2-3 are closed, PWR and RLY indicators are on.

  2. Faulty State:

    • If the voltage of any phase exceeds the permissible limits or the phase sequence is incorrect:

      • Contacts 2-3 disconnect,

      • contacts 1-2 connect,

      • RLY indicator turns off.

  3. Return to Normal State:

    • When the correct voltage and phase sequence are restored, the relay automatically switches back to its working state.

Technical Parameters

  • Supply Voltage: 3 × 380 V AC

  • Permissible Asymmetry: 40% (fixed)

  • Contact: SPDT, max. 5 A / 250 V AC

  • Indication: LED PWR and RLY

  • Installation: DIN rail

  • Operating Temperature: from -20 °C to +55 °C

  • Power Consumption: <6 VA

  • Weight: <150 g

Online payment by bank card – after placing the order, you will be redirected to the payment portal. You will receive payment confirmation in your email.

Cash payment upon delivery – you will pay the amount specified in the payment notice to the courier upon delivery.

Payment by bank transfer – a prepayment invoice (proforma) will be sent to your email address no later than the next business day, indicating the bank account number to which the payment should be made.

Payment by invoice – this option is available to cooperation partners who have a cooperation agreement with our company.

If you wish to use one of the last two payment methods, please contact our customer service specialist, who will provide instructions on receiving an invoice with or without VAT.

The electrical equipment we supply meets high-quality standards, comes with a 24-month warranty, and fully complies with all European Union requirements.

We also offer free delivery for orders over 100 EUR, as well as a flexible discount and promotion system. Our employees' technical knowledge and experience allow us to provide professional consultations and, if necessary, offer alternative electrical product solutions.

The electrical equipment we supply meets high quality standards, comes with a 24-month warranty, and complies with all EU requirements.
In case of claims, returns are free of charge.

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