PGR-6100 Series - Littelfuse PGR-6100 Ground-Fault and Insulation Relay Provides Exceptional Motor Protection

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The PGR-6100 monitor combines the features of a ground-fault protection relay and insulation monitor into one unit. The monitor can detect a motor ground fault whether the motor is running (online mode) or stopped (offline mode). It protects against ground faults by monitoring insulation resistance when the motor is de-energized and by monitoring ground-fault current when the motor is energized. The PGR-6100 features two separate analog outputs for optional current and ohm meters and two separate alarm relays. The unit operates on one- or three-phase solidly grounded, resistance grounded, and ungrounded systems up to 6 kV. Selectable fail-safe or non-fail safe operating modes allow connections to shunt or undervoltage breaker coils. The PGR-6100 is unique in that it has predictive as well as protective capabilities.

Features

  • Adjustable GF pickup (10 mA–3 A)
  • Adjustable insulation pickup (250 kΩ–2 MΩ)
  • Adjustable time delay (50 ms–1.0 s)
  • Output contacts
  • Two analog outputs (0–1 mA)
  • CT-loop monitoring

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
VAC
Supply
Voltage
VDC
Relay Contacts ConfigIEEE Device NumbersRelay
Contact
Operating
Weight (lbs/g)Auto Manual ResetConformally coatedFrequencyGF Trip Level AGF Trip Time sInsulation Resistance kOhmsTest ButtonSamplesCompare
PGR-6100-120120242 Form C (N.O./N.C.)50 - 50G - 50N - 51 - 51G - 51N - 64 - 74Fail-safe / Non Fail-safe0 KgLatching; AutoresetOptional50; 600.01 - 3.00.0 - 1.0250; 500; 1000; 2000Front-panel switchOrder
PGR-6100-2402402 Form C (N.O./N.C.)50 - 50G - 50N - 51 - 51G - 51N - 64 - 74Fail-safe / Non Fail-safe0 KgLatching; AutoresetOptional50; 600.01 - 3.00.0 - 1.0250; 500; 1000; 2000Front-panel switchOrder

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