Power Monitoring Relay

Bulletin 814S Power Factor Monitoring Relays and Power (kW) Monitoring Relays offer state-of-the-art supplementary protective functions that you can easily add and apply to your motor control circuits.


Popular Resources/Quicklinks
Motor Protection Solutions Brochure MachineAlert Motor Protection Relays Product Profile MachineAlert Dedicated Function Motor Protection Relays Selection Guide


  • Monitors under- and over-power factor detection (power factor monitor only)
  • Monitors under- and over-active power and power direction (power (kW) monitor only)

Product Selection


  • cULus Listed — File No. E14840; Guide Nos. NKCR, NKCR7
Looking for Additional Information?

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Resource Publication Number Language
Motor Protection Solutions Brochure 193-BR029
MachineAlert Motor Protection Relays Product Profile 809S-PP001
Supplemental Motor Protection Devices Specifications Technical Data 809S-TD001
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