Power Electronics Asymmetry & Sequence Monitor Three-Phase PT431-8. It is used to protect asynchronous three-phase motors from anomalies in the electrical power distribution network.

Features:

• Monitoring of three-phase network voltage
• Loss of one or more phases or the neutral
• Asymmetry of the three phases (adjustable 5-20%)
• Sequence, overvoltage, and undervoltage
• Neutral use is required
• Relay with switching contact 10A / 250VAC cat. AC1
• LED indications RELAY ON and POWER ON
• Varistor protection (against overvoltages and lightning)
• Mounting type of terminal block, 8p
• Operating temperature -20º to +50º C
• Plastic enclosure / 42 x 89 x 92 mm / IP 41