Monitoring Relays There are 78 products.

• 

  Quick view

  PPA03 3-Phase Sequence & Phase Loss...

  3-Phase relay for detection of incorrect phase sequence and phase loss. Using the front knob it can be decided the undervoltage setpoint of the unit. Supply range from 208 to 240 VAC, 380 to 480 and 600 to 690 VAC covered by three multivoltage relays. For mounting on DIN-rail or plug-in module. GET A QUOTE

  More
• 

  Quick view

  PPB01 True RMS 3-Phase Voltage Monitoring...

  DPB01 and PPB01 are 3-phase mains monitoring relays. They operate on 3P and 3P+N systems, monitoring phase loss and phase sequence (not present in versions with "N" ending), overvoltage and undervoltage. Power supply provided by the monitored mains. Delay on alarm, up to 30s, for over/under voltage alarms. GET A QUOTE

  More
• 

  Quick view

  PPB02 True RMS 3-Phase Voltage Monitoring...

  DPB02 and PPB02 are 3-phase mains monitoring relays. They operate on 3P and 3P+N systems, monitoring phase loss, phase sequence and voltage asymmetry. Power supply provided by the monitored mains. Delay on alarm, up to 30s, for asymmetry alarm. GET A QUOTE

  More
• 

  Quick view

  PPC01 True RMS 3-Phase Voltage Monitoring...

  DPC01 and PPC01 are 3-phase mains monitoring relays. They operate on 3P and 3P+N systems, monitoring phase loss and phase sequence, overvoltage and undervoltage, voltage asymmetry and torelance. Power supply provided by the monitored mains. Two independent delay functions, up to 30s, for over/under voltage and asymmetry/tolerance alarms. GET A QUOTE

  More
• 

  Quick view

  DFB01 Frequency Monitoring Relay

  DFB01 and PFB01 are precise frequency monitoring relays. The relays monitor their own power supply from 24 to 240 VAC. The advantage of using the latch function is that the relay can be kept energized even after the end of the alarm condition. Inhibit function can be used to avoid relay operation when not desired (maintenance, transitions). The LED's...

  More
• 

  Quick view

  DFC01 Frequency Monitoring Relay

  DFC01 is a precise frequency monitoring relay. It monitors its own power supply. Overfrequency and underfrequency can be monitored separately with two independent setpoints, delay times and relay outputs. The LED's indicate the state of the alarm and the output relay. GET A QUOTE

  More
• 

  Quick view

  PFB01 Frequency Monitoring Relay

  DFB01 and PFB01 are precise frequency monitoring relays. The relays monitor their own power supply from 24 to 240 VAC. The advantage of using the latch function is that the relay can be kept energized even after the end of the alarm condition. Inhibit function can be used to avoid relay operation when not desired (maintenance, transitions). The LED's...

  More
• 

  Quick view

  DWA01 3-Phase Load Guard Monitoring Relay

  DWA01 and PWA01 are precise over or under cos ϕ monitoring relays. The relays monitor their own power supply voltage and the current of a balanced 3- phase system. For current measure direct connection, 5A standard current transformers and MI CT can be used. The LED's indicate the state of the alarm and the output relay. GET A QUOTE

  More
• 

  Quick view

  DWB01 3-Phase Load Guard Monitoring Relay

  DWB01 and PWB01 are precise TRMS power factor monitoring relays for 3- phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, where the power factor is almost proportional to the load. The relay measures the power factor (cos ϕ), that is the ratio between the active and the apparent...

  More
• 

  Quick view

  DWB02 3-Phase Active Power Monitoring Relay

  DWB02 and PWB02 are precise TRMS active power monitoring relays for 3- phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, as well as the power consumption by of system. Start/stop input allows to use a manual switch to start and stop the system, without the need of an auxiliary...

  More
• 

  Quick view

  DWB03 3-Phase Active Power Direction...

  DWB03 and PWB03 are precise TRMS active power monitoring relays for 3-phase balanced systems. They can be used for monitoring the actual load of asynchronous motors and other symmetrical loads, as well as to see if the power flows in the correct direction. Start/stop input allows to use a manual switch to start and stop the system, without the need of...

  More
• 

  Quick view

  PWA01 3-Phase Load Guard Monitoring Relay

  DWA01 and PWA01 are precise over or under cos ϕ monitoring relays. The relays monitor their own power supply voltage and the current of a balanced 3- phase system. For current measure direct connection, 5A standard current transformers and MI CT can be used. The LED's indicate the state of the alarm and the output relay. GET A QUOTE

  More