Finder Thermistor Motor Protection Relay 24 V AC, 2 Changeover Contacts, DIN Rail 70.92.0.024.0002

Protect motors from overheating caused by overloads, locked rotors, or insufficient cooling with the Finder 70.92.0.024.0002 thermistor motor protection relay. It monitors up to six PTC thermistors embedded in the motor windings and trips the output contacts when the winding temperature exceeds a safe threshold.

Who is it for

Maintenance engineers, panel builders, and machine OEMs who need reliable thermal protection for three-phase motors in industrial equipment, pumps, fans, and compressors.

Main features

• Monitors 1 thermistor circuit with up to 6 PTC sensors in series
• 2 changeover (CO) output contacts rated 6 A / 250 V AC
• Selectable automatic or manual reset
• LED indication: green for supply, red for trip/fault
• Detects short circuit and open circuit in the thermistor loop
• Mounts on 35 mm DIN rail

Specifications

• Supply voltage: 24 V AC, 50/60 Hz
• Power consumption: 2.5 VA
• Output contacts: 2 CO, AgNi, 6 A / 250 V AC (AC1)
• Trip resistance: < 3.6 kΩ
• Reset resistance: > 1.65 kΩ
• Operating temperature: -20°C to +60°C
• Protection degree: IP40 housing, IP20 terminals
• Approvals: CE, cURus

Tips

For manual reset, wire a normally open pushbutton in series with the reset terminal. Use screened cable for the thermistor circuit to avoid false trips from electrical noise.