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5
Technical
Section 11
Dimensions
Section 12
PB101779_SE-50
DB404504
Operation
Recloser
The built-in automatic recloser automatically recloses the residual current device
after checking insulation of the downstream circuit.
If the resistance to earth is lower than Rd, then RED reclosing is prohibited.
If the resistance to earth is higher than Rdo, then RED reclosing is allowed.
Residual current device
The RED operate in the residual current device mode, without automatic restart,
when the sliding cover is open, i.e. to the right in the Auto Off position (Fig. 1).
The automatic restart mode and the Autotest are activated, when the sliding cover is
closed, i.e. to the left in the Auto On position (Fig. 2).
Test
b
b
Supply from
above or below
b
b
Test button
d
This is onlypossible inmanualmode, i.e. slidingcover open in theAutoOff
position. You can thenmanually test thedevicebypressing theTest key.
Thedownstream installation is then temporarilybroken. Youmust then
manually reclose theREDby activating theO-l lever topower supply the
downstreamcircuit.
Fig. 1
Fig. 2
RED
A type
30mA (cont.)
Protect
Earth leakage protection
Automatic recloser