SE-701 Series – Ground-Fault Monitor Series - Littelfuse SE-701 Relays Provide Superior Ground-Fault Protection

Series: SE-701 Series – Ground-Fault Monitor
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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 SE-701 series is a microprocessor-based, ground-fault relay for resistance-grounded and solidly grounded ac systems. In addition to common systems, it is uniquely suited for use on systems with significant harmonic content. The SE-701 can provide main-plant protection, feeder-level protection, or individual-load protection. Proper current transformer selection provides the desired pickup range. The output contacts can be connected for use in protective tripping circuits or in alarm indication circuits. Its output relay can operate in the fail-safe or non-fail-safe mode for undervoltage or shunt-trip applications. The analog output can be used with a PLC or a meter.

Features

  • Adjustable pickup (1–99 %)
  • Adjustable time delay (50–2.5 ms)
  • Output contacts
  • Analog outputs (0–5 V)
  • CT-loop monitoring
  • Non-volatile trip memory
  • Selectable DFT or peak detection filtering
  • Harmonic filtering
  • Universal power supply
  • Microprocessor-based

Product Literature

For Technical Questions

Call +1 800-832-3873 or email us at relays@littelfuse.com 

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
VAC		Supply
Voltage
VDC		Relay Contacts ConfigAnalog Output Voltage VIEEE Device NumbersRelay
Contact
Operating		Weight (lbs/g)Auto Manual ResetConformally coatedCT Loop MonitoringFrequencyGF Trip Level Range pctGF Trip Time sHarmonic FilteringReset TypeStockSamplesCompare
SE-701-03241 Form A (N.O.); 1 Form B (N.C.)0 - 5 V50G - 50N - 51G - 51NFail-safe / Non Fail-safe0 KgLatching; AutoresetOptionalStandard50; 60; ASD1 - 99% of CT-Primary Rating0.5 - 2.5Standard (DFT)Front-panel switch/Remote N.O. ContactOrder
SE-701-03-CC0 KgCheckOrder
SE-701-0D12 - 241 Form A (N.O.); 1 Form B (N.C.)0 - 5 V50G - 50N - 51G - 51NFail-safe / Non Fail-safe0 KgLatching; AutoresetOptionalStandard50; 60; ASD1 - 99% of CT-Primary Rating0.5 - 2.5Standard (DFT)Front-panel switch/Remote N.O. ContactOrder
SE-701-0D-CC0 KgCheckOrder
SE-701-0T481 Form A (N.O.); 1 Form B (N.C.)0 - 5 V50G - 50N - 51G - 51NFail-safe / Non Fail-safe0 KgLatching; AutoresetOptionalStandard50; 60; ASD1 - 99% of CT-Primary Rating0.5 - 2.5Standard (DFT)Front-panel switch/Remote N.O. ContactOrder
SE-701-0T-CC0 KgCheckOrder
SE-701-0U120 / 240120 / 2401 Form A (N.O.); 1 Form B (N.C.)0 - 5 V50G - 50N - 51G - 51NFail-safe / Non Fail-safe0 KgLatching; AutoresetOptionalStandard50; 60; ASD1 - 99% of CT-Primary Rating0.5 - 2.5Standard (DFT)Front-panel switch/Remote N.O. ContactOrder
SE-701-0U-CC0 KgCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
SE-701-0U GROUND-FAULT MONITOR - UNIVERSAL RoHS No 12/11/2019 PbFree No 12/11/2019 CoC_RoHS9_SE-701-0U Yes
12/11/2019
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