RCD Series - Residual Current Devices

Series: RCD
Replaced By: Replaced by PGR-4700 Sensitive Ground-Fault Relay Availability: Obsolete

Obsolete

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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 RCD300M2 residual current relay is designed to provide sensitive ground fault protection without the problems associated with high-sensitivity nuisance tripping. It operates continuously and has the unique feature of a metering output to drive either a remote meter or interface with a PLC. By using it, leakages can be seen as they occur and ground faults can be detected before they become critical. The RCD300M2 operates in conjunction with a Littelfuse WKE Series current transformer. The combination of the RCD300M2 measuring signal and the output signal from the WKE provide the required resilience to electrical noise - the main cause of nuisance tripping.

Features/Benefits
  • Adjustable sensitivity of 10 mA to 3.0 A reduces nuisance trips.
  • Adjustable time delay of 0-1.5 sec adapts to unique applications.
  • Metering output with PLC interface for ease of continuous monitoring of system.
  • Transformer continuity test allows immediate assurance of a safe system.
  • C.T. Loop Monitoring.
  • Harmonic Filtering.
  • DIN Standard molded case for ease of mounting via snap on rail or screw mounting.

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
VAC
Supply
Voltage
VDC
DimensionsWeight (lbs/g)Alarm range max AAlarm range Min AGF Trip Time sStockCompare
RCD300M2-120V1203 H x 2.2 W x 4.3 D in.0 Kg30.10.0 - 1.5Check
RCD300M2-240V2403 H x 2.2 W x 4.3 D in.0 Kg30.10.0 - 1.5Check
RCD300M2-24V24243 H x 2.2 W x 4.3 D in.0 Kg30.10.0 - 1.5Check
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