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Technical data

DFS 4 EV

Series

DFS 4

Number of poles

2

4

Tripping characteristics

Type A DIN EN 61008-1

Rated current

25 A

40 A

Rated residual current I�n

30 mA

Max. switch-off times (AC)

1 × I�n: ≤ 0.3 s; 5 × I�n: ≤ 0.04 s

Operating voltage range

 

of test circuit

100 V ...250 V AC

185 V ...440 V AC

Active  
additional 
device

in sys. on  

IEC 62752

DC tripping 
current

max. 6 mA

Max. switch-off 

times (DC) 

6 mA ≤ 10 s; 60 mA ≤ 0.30 s; 300 mA ≤ 0.04 s

Operating 

voltage  
(DC detection)

single-phase 85 V ...265 V AC

Internal con

-

sumption

2 W

Rated surge voltage capacity

4 kV

Rated short-circuit current

10 kA

Max. rated switching capacity

500 A

Rated insulation voltage

400 V

Rated frequency

50 Hz

Current heat loss per current 
path

0.4 W

1.3 W

Max. thermal back-up fuse

25 A

40 A

Max. short-circuit back-up 

fuse

100 A

Back-up fuse type

gG

Max. number of conductors

2 per terminal (of same type and dia.)

Connector 

cross-

section

solid

1 × 1.5 ...50 mm² (1-conductor connection),

 

2 × 1.5 ...16 mm² (2-conductor connection)

flexible

1 × 1.5 ...50 mm² (1-conductor connection),

 

2 × 1.5 ...16 mm² (2-conductor connection)

stranded

1 x 1.5 ...50 mm² (1-conductor connection), 

 

2 x 1.5 ...16 mm² (2-conductor connection)

Tightening torque

2.5 Nm ...3 Nm

Installation position

optional

Max. operating altitude

2,000 m above sea level

Mech. endurance

min. 5,000 switching cycles

Electr. endurance

min. 2,000 switching cycles

Storage temperature

-25°C ...60°C

Ambient temperature

-25°C ...40 °C

Resistance to climatic 
changes

conforming to DIN IEC 60068-2-30: damp/heat, 

cyclic (25°C / 55°C; 93% / 97% rel. hum.)

Shock resistance

20 g/20 ms duration

Vibration resistance

>

 5 g (f ≤ 80 Hz, duration 

>

 30 min.)

Mounting

Mounting rail in accordance with EN 60715

Housing type

distribution installation housing

Housing material

Thermoplast

Protection class

IP20 (front side: IP40)

Sealable

Yes

Dimensions

W 72 mm (4 TE) × H 85 mm × D 75 mm

Installation depth

69 mm

Design requirements

DIN EN 61008-1, DIN VDE V 0664-120,

 

E DIN IEC 62752, EN 61000-6-3

Effective value of tripping threshold

Pulsating  

DC residual current:

Additional device 

active: *

Additional device  

not active:

> 4.5 mA

> 10.5 mA

90 °

> 6.3 mA

> 7.5 mA

135 °

> 3.3 mA

> 3.3 mA

* Tripping values as per EN DIN IEC 62752

Warranty

All professionally installed, unaltered devices are covered by warranty during the 
statutory guarantee period from the day of purchase by the end user. The warranty 

is  not  applicable  to  damage  incurred  during  transport  or  caused  by  short-circuit, 

overloading or improper use. In the event of defects in workmanship or material, 
which 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.

Wiring diagrams

6 N

5 N

~

 

V

two-pole

(N)1 3 5 7(N)

(N)2 4 6 8(N)

 

V

four-pole, neutral on left or right, depending on device version

Installation and Operating Manual

for two-/four-pole residual current circuit-breakers 
in DFS 4 EV model ranges

Intended use and mounting

For snapping onto mounting rail and for installation in distribution boards with cor

-

responding device covers. Prevents contact with dangerous active parts.

EV-specification residual current circuit-breakers are type-A devices with integrated 

additional devices that isolate the switching contacts of the RCCB when smooth DC 
residual currents > 6 mA are detected. They are only suitable as protective devices for 

the power supply of electric vehicles as per HD 60364-7-722 in charge operating mode 
3 according to EN 61851-1.

Electrical connection

Guide all active conductors (outer cables L1, L2, L3 and the neutral conductor MP/N) 
through the switch. The input terminals are 1, 3, 5, 7; the consumer system side is 2, 
4, 6, 8. For two-pole applications, two-pole residual current circuit-breakers must 

be used. Scrape and grease aluminium conductors immediately before connection.

Integrated additional device

The integrated additional device, which depends on the auxiliary voltage, detects 
smooth DC residual currents. If these currents exceed 6 mA, the additional device 

isolates the switching contacts of the residual current circuit-breaker. The LED in-

dicates that the additional device is active. The additional device is supplied via an 

adaptor circuit integrated at terminals 1 and 7. An alternating voltage > 85 V must be 

present at these terminals for the additional device to function properly. If the LED 
does not illuminate, then only tripping via type A residual currents is still guaranteed. 

Testing and functional check

An insulation test of the user equipment is to be carried out in accordance with DIN 

EN 61557-2. This may only be done when the device is switched off. Insulation test-

ing when the device is switched on or insulation testing on the input side may lead 

to incorrect measured values. A functional inspection of the residual current circuit-

breaker itself is possible with connected mains voltage by pressing the test button T 

and, as in commercial use (BGV A3), should be carried out at least every six months in 

the case of stationary systems and should be repeated every working day in the case 

of non-stationary systems.

Application instructions and warnings

The following notes and warnings must be observed in order to ensure safe opera

-

tion:

1. 

Installation may only be carried out by an electrician who is familiar with the rel

-

evant national installation regulations.

2.  Without  any  additional  protective  housing,  residual  current  circuit-breakers 

should only be stored and operated in a dry, low-dust environment. An aggressive 

atmosphere must also be avoided.

3. 

The user must be made aware of repeat testing using the test button T.

4.  Please be aware that the short-circuit back-up fuse (SCPD) does not ensure any 

thermal overload protection. Thermal overloading must be ruled out as a matter 

of priority by means of thorough project planning or using the specified thermal 
back-up fuse (OCPD).

5. 

Trips due to leakage currents caused by surge voltage cannot be completely ruled 
out. In cases where an interruption of the power supply may lead to potential 
dangers for humans and animals or serious damage to property, residual current 
protection should be implemented by means of increased surge current strength, 

selective residual current circuit-breakers and upstream surge arresters. In spe-
cific cases, the switching status should be monitored by means of an auxiliary con-
tactor at the residual current circuit-breaker and an appropriate signalling device.

Important information on tripping with pulsating DC residual currents (type A)

Pulsating DC residual currents also contain a constant part (DC) in addition to 

spectral  parts  of  the  mains  frequency  and  their  fluctuations.  The  integrated 
additional  device,  depending  on  its  physical  setup,  cannot  differentiate  be-

tween a pure smooth DC residual current and the constant (DC), spectral part 
of a pulsating DC residual current and thus evaluates these in the same way. 
If the additional device is active, pulsating DC residual currents will therefore 

cause  a  premature  trip  (see  table  part  "Effective  value  of  tripping  threshold"). 

 

The switch-off times stipulated in relevant product standards and installation regula-
tions remain unaffected by the integrated additional device.

Doepke

3930255 

|

 06/2014 

Doepke Schaltgeräte GmbH, Stellmacherstraße 11, D-26506 Norden

DE EN

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