background image

Fault scenario

Switch-off of

residual current

All conductors

External residual current

Only active conductors*

Phase conductor interrupted

All conductors

Neutral conductor interrupted

All conductors

Protective conductor interrupted

All conductors

PEN conductor interrupted

All conductors

Phase and neutral conductor mixed up

All conductors

Phase and protective conductor mixed up

All conductors

Phase and PEN conductor mixed up

All conductors

Voltage-carrying protective conductor

All conductors*

Voltage-carrying PEN conductor

All conductors*

* Tip: If a dangerous external residual current and a dangerous current on the protec-
tive conductor are detected at the same time, the protective conductor contact remains  
switched on.

Warranty

All professionally installed, unaltered devices are covered by warranty for the du-
ration of the statutory warranty period from the day of purchase by the end user. 
The warranty does not apply to damage incurred during transport or caused by 
short-circuit, overloading or improper use. For defects in workmanship or material 
that are discovered within the warranty period, the company will provide repair or 
replacement free of charge. The warranty will be rendered null and void if the device 
is opened without authorisation.

Connection diagram

N

L3

L1 L2

L3’

N’ L1’ L2’

~

Usage information

DPRCD-M1

 

These  installation  and  operating  instructions  are  aimed  at  qualified 

electrical specialists. The installation of devices of this type is not ap-
propriate for electrical laypersons due to the considerable potential 
dangers. These installation and operating instructions must be re-
tained, so that they can be referred to at a later stage. The operator of 
the electrical installation must be informed about the application and 

function of this protective device.

Application instructions and warnings

1. 

Devices with visible damage must not be installed or used.

2. 

The user must be made aware of regular function testing using the test key T.

3. 

If the DPRCD-M1 cannot be switched on when connected to the power, the device 
must be replaced.

4. 

Disposal is subject to the statutory regulations of the European Union (WEEE/
German Electrical and Electronic Equipment Act).

For further information and data sheets, please visit www.doepke.de/en/ and search 
by the article number or scan the QR code on the front of the housing.

Intended use

The DPRCD-M1 is intended for installation in a suitable housing which pro-

tects  against  vibrations  and  atmospheric  influences.  For  installation  in  an  ap

-

propriate housing, it is possible to create a 3-phase PRCD in compliance with 
the DIN VDE 0661 and the DGUV Information 203-006. In addition to the pro-

tection  provided  in  a  stationary  electrical  installation,  a  PRCD  also  offers  an 

increased level of protection against dangerous shock currents. A test key 

which  is  accessible  to  laypersons  enables  testing  of  the  switch  off  function.  

 

Regular testing can also increase the endurance and reliability of the switching de-
vice, as the mechanism of the latch is moved when tripped in addition to the electrical 
test.

Electrical connection and installation

The electrical connection must be made in accordance with the terminal designa-
tions on the device. The mains connection is made via the top terminals PE, N, L1, L2 
and L3, which are labelled ‘LINE’. The device must be installed on a mounting rail (TS 
35) in accordance with DIN EN 60715 in a suitable housing, which must ensure me-
chanical protection, the necessary protection against direct contact and protection 

against harmful environmental influences.

Testing and functional check

After connecting the mains voltage, the green LED for displaying a clock-

wise  rotational  field  should  illuminate  if  the  terminal  is  error-free. 

 

The device can now be put into operation. The toggle is in the middle position: 

Switching to position ‘1’ is only possible if the toggle has first been moved down to 

position ‘0’.  

If there is an anticlockwise rotational field, the yellow LED illuminates and it is then 

not possible to switch on the DPRCD-M1. 

When switched on, the function test (tripping in the event of a residual current) is 
carried out using the test button ‘T’. When the key is pressed, the DPRCD-M1 must 
trip without noticeable delay. The toggle is then in the middle position. Resetting to 

position ‘1’ is only possible if the toggle has first been moved down to position ‘0’.  If 

tripping does not occur, the device must be replaced immediately.

Operation

When  disconnected  from  the  power,  the  DPRCD-M1  cannot  be  switched  on  via 

the internal undervoltage trip.

 

If  all  five  network  conductors  are  connected  in  the 

correct sequence, the green LED illuminates and the DPRCD-M1 can be switched 
on. As soon as an error state is detected (e.g. a faulty protective conductor), the red 

LED illuminates. In this condition, the device cannot be switched on/is switched off 

if the device was not switched on beforehand. Depending on the fault, either only 

the active conductors (without PE) or all five conductors are disconnected from the 

mains supply. The mechanical position indicating devices show which switching 
contact has triggered. Red shows a closed switchgear and green a closed one. The 
table below shows the reactions of the DPRCD-M1 in all detectable error scenarios.

Doepke

DE EN

3930308 

|

 09/2022 

Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden

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