(972) 370-0664
voltage & frequency relays
ground fault devices & current relays
insulation monitors
custom design
product line
Circuit Savers

RCD 300M2 Features

• 10 mA-3.0A adjustable trip point
• Adjustable time delay 0 - 1.5 S
• CT loop monitoring
• Metering output
• Harmonic filtering
• UL approved

For an actual simulation of how the RCD works, click button 


The RCD 300M2 provides sensitive ground fault protection for fixed or portable equipment. The unit has both protective and predictive capabilities which provide a very high degree of safety for both people and equipment.

CT600 Series Current Transformers
The RCD 300M2 operates together with a CT600 series current transformer. There are different sizes available ranging from 1” to 8” depending upon the size of the load conductors passing through window.  Only the load carrying conductors pass through the C.T.. The ground wire must remain outside the C.T. core. It is also important that the cables passing through the C.T. be as straight as possible to minimize the possibility of core saturation.

Do you have a ground fault application?

We can help.

Contact us by phone or fax: 972-370-0664

Available Options
• ac/dc 24V, ac 120/230 V input power supply
• Non-adjustable single trip level
• Non-adjustable time, reaction time <24 mS
• Monitoring up to ac1200 Hz

H1           LED green POWER ON
H2           LED red GROUND FAULT
H3           LED red CT FAULT
K1           Alarm relay
S1           Internal test button
S2           Internal reset button
S3           Failsafe/Active switch (behind front cover)
S4           Leakage current trip level selector switch
S5           External test button (optional)
S6           External reset button (optional)

R1           leakage current time delay potentiometer 

1-2          input power supply (+/- 15%)
4-5          External test button
5-6          External reset
7-8          C.T. connection
9-10        Leakage current meter
11-12-13 Contact 1 for K1
14-15-16 Contact 2 for K1

home | product line | ground fault devices & current relays | insulation monitors
custom design | voltage & frequency relays
Copyright © 2000 Circuit Savers
All Rights Reserved.