Finder 6K.T0.0.000.0406 Motor Protection Relay, 3-Phase Monitoring, 208-690 V AC, 1 NO + 1 NC, DIN Rail

Protect three-phase motors from damaging electrical conditions with the Finder 6K.T0.0.000.0406 motor protection relay. This device continuously monitors phase loss, phase sequence, phase unbalance, undervoltage, and overvoltage, automatically disconnecting the motor when a fault is detected.

Who is it for

Industrial electricians, panel builders, and maintenance technicians who need reliable motor protection in three-phase systems up to 690 V AC. Ideal for pumps, compressors, conveyors, and HVAC equipment.

Main features

• Monitors 3-phase supply from 208 to 690 V AC (line-to-line)
• Adjustable phase unbalance threshold (5-20%)
• Adjustable undervoltage (80-95% of Un) and overvoltage (105-120% of Un) thresholds
• Adjustable trip delay from 0.1 to 10 seconds
• Output: 1 NO + 1 NC contacts rated 8 A at 250 V AC
• DIN rail mounting for easy installation
• LED indicators for status and fault indication
• Automatic reset after fault clearance

Specifications

• Supply voltage: 208-690 V AC (L-L), 120-400 V AC (L-N)
• Output contact configuration: 1 NO + 1 NC
• Contact rating: 8 A @ 250 V AC (2000 VA)
• Mounting: DIN rail
• Operating temperature: -20 to +60 °C
• Terminal type: screw
• Protection degree: IP20 (terminals), IP40 (enclosure)
• Power-on delay: fixed 0.5 s
• Reset: automatic

Tips

Set the unbalance threshold according to motor tolerance; typical values are 5-10% for sensitive motors. Use the adjustable delay to avoid nuisance tripping during short voltage dips.