Description - ABB RD3M Manual

Description

The RD3M device is part of ABB's RD3 family of residual current relays and
provides residual current monitoring and protection in compliance with
annex M to the CEI EN 60947-2 standard* and can be used in combination
with all MCBs S200 and moulded-case devices in the Tmax range up to
T5 for industrial plants.
The LED and the two output contacts of the RD3M range of residual
current relays can be used for signalling.
*Up to 630A
BB_76x88mm_Rd3M_rev4.indd 14
ON Pre Alarm
l n [A]
1
0,5
0,3
0,1
0,03
TEST RESET
t [s]
2 0,5
3 0,3
5 0,2
10 0,06
30 0
Pre Alarm
OFF
14
FAULT
1
2
3
5
10
RD3M
ON
IEC60947-2/M
19/09/11 11:02