Phase control relay FKV-03F

FKV-03F - Phase control relays, TENSE

Product Description

The FKV-03F relay is designed to protect three-phase electric motors against incorrect phase sequence, phase failures, and voltage asymmetry (fixed at 40%). The device has a neutral wire and clear LED indication for status and errors.

Function and Operation

• Normal operation: OUT LED lights up, relay is active.

• Asymmetry error: ERR LED does not light up, relay is deactivated.

• Incorrect phase sequence: error indicator lights up, OUT LED does not light up, relay is deactivated.

• Contacts:

  • Relay active: 2 (COM) and 3 (NO) switched.

  • Relay deactivated: 2 (COM) and 3 (NO) on.

Technical data

• Operating voltage: 3×380 V AC + neutral wire.

• Frequency: 50/60 Hz

• Power consumption: <6 VA

• Asymmetry: fixed 40%

• Contact: 5 A / 250 V AC (resistive load)

• LED indication: 3 diodes

• Installation: DIN rail

• Operating temperature: -20 °C to +55 °C

• Cable diameter: up to 2.5 mm²

• Weight: <150 g

Application:

• Three-phase electric motors

• Industrial machines and pumps

• Equipment sensitive to power grid quality