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Installation and Operating Manual

for residual current circuit-breakers 

of series F204…-125/…

General

In order to avoid personal injury and damage to property, the operating manual 
must be read carefully before using the residual current circuit breaker. The  
manual must also be retained for future reference. Installation may only be car-
ried out by an authorised specialist who is familiar with the relevant national in-
stallation regulations.

Intended use and mounting

For snapping onto mounting rail and for installation in distributions board with 
corresponding device covers, to prevent contact with dangerous active parts.

Electrical connection

Guide phase and all outer conductors (L1, L2, L3) and the neutral conductor 
(MP/N) through the switch. Energy may flow in either direction, i.e. the mains or 
consumer unit may be connected to the upper or lower terminal block. To ensure 
that the installed testing facility functions correctly, for two-pole connection four-
pole devices, the terminals must be used in accordance with the wiring diagram. 
Scrape and grease aluminium conductors immediately before connection.

Testing and functional check

The testing of all safety measures during commissioning must be carried out 
according to the information in the valid national installation regulations. A func-
tional inspection of the residual current circuit-breaker itself is possible with con-
nected mains voltage by pressing the test button T. As in commercial use (BGV 
A3), it 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. After tripping by pressing the test button or a system-specific residual 
current, the toggle of the residual current circuit-breaker is located in the middle 
position '+'. Resetting to position 'I' is only possible if the toggle has firstly been 
moved to position '0'. The operating display beneath the toggle indicates the sta-
tus of the switching contacts. If the switching contacts are closed, the display is 
red and it is green if the switching mechanism is open.

Application instructions and warnings

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

1.  Without any additional protective housing, residual current circuit break-

ers should only be stored and operated in a dry, low-dust environment.  
Aggressive atmospheres must also be avoided.

2.  The user must be made aware of repeat testing using the test button ‘T’.
3.  Using surge current strength residual current circuit breakers cannot abso-

lutely guarantee to rule out trips due to leakage currents caused by surge 
voltage. 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 up-
stream  surge  arresters.  In  specific  cases,  the  switching  status  should  be 
monitored by means of an auxiliary contactor at the residual current circuit 
breaker and an appropriate signalling device.

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

sure 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.  When working on electrical systems, this fuse must always be activated and 

the safety rules must be observed. Should there unexpectedly be any con-
tact with active parts, a doctor must be called immediately.

6.  Disposal is subject to the statutory regulations of the European Union 

(WEEE/German Electrical and Electronic Equipment Act).

7.  Opening the device or removing the safety seal will invalidate the warranty.
8.  Accessories: auxiliary switch F2-125A-B-S/H for new switch toggle or motor 

drive F2…CM4

Notes for users

1.  The test button 'T' must be used regularly to check the function of the residu-

al current circuit breaker. This 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.

2.  Recurrent testing of the protective measures must be carried out at regular 

intervals by an authorised specialist.

3.  After tripping by pressing the test button or a system-specific residual cur-

rent, the toggle of the residual current circuit breaker is located in the middle 
position '+'. Resetting to position 'I' is only possible if the toggle has firstly 
been moved to position '0'.

4.  If the residual current circuit breaker can no longer be switched on in accord-

ance with the procedure indicated under point 3, an authorised specialist 

must be contacted.

5.  If any damage to the housing is identified, an authorised specialist must be 

contacted.

6.  Disposal must be performed by an authorised specialist and is subject to the 

statutory regulations of the European Union (WEEE).

Wiring diagrams

1 3

2 4

 

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

Technical data

F204 A/AC

Rated current

125 A

Rated residual  

current I∆n

0.03 A, 0.10 A, 0.30 A, 0.50 A

Maximum  

switch-off times, 

instantaneous F200

1 x Idn: < 300 ms, 5 x Idn: < 40 ms

Maximum switch-

off time, selective 

F200

1 x Idn: < 500 ms; 5 x Idn: < 150 ms

Response delay, 

selective F200

1 x Idn: 130 ms < T < 500 ms;  

 

5 x Idn: 50 ms < T < 150 ms

Operating voltage 

range of test circuit

(2-pole) 100 V – 250 V (AC),  

 

(4-pole) 185 V – 440 V (AC)

Min. operating 

voltage (Type A/AC 

operation)

0 V AC

Non-tripping time 

F200….APR

10 ms

Operating voltage 

 230/400 V (max. 440 V)

Rated frequency

50 Hz

Rated impulse 

withstand voltage

2.5 kV

Load circuit

Design

Load disconnect contact

Min. contact 

opening

3 mm

Rated voltage

 (4-pole) 230, 400 V

F204 A/AC

Rated short-circuit 

current

10 kA

Surge current 

strength

0.25 kA

Surge current 

strength F200….

APR

3 kA

Surge current 

strength F200….

AS (selective)

5 kA

Max. rated  

switching capacity

1250 A

Rated insulation 

voltage

400 V

Rated frequency

50 Hz

Current heat loss 

per current path 

(2-pole)

8.95 W

Current heat loss 

per current path 

(4-pole)

7.50 W

Short-circuit  

back-up fuse 

SCPD, utilisation 

category gG

1)

125 A

Thermal back-up 

fuse OCPD utilisa-

tion category gG

1)

80 A

Upper and lower screw-type terminal (load circuit)

Clamping area

1.5 mm² – 50 mm²

Maximum number 

of conductors per 

terminal

2

Con-

nection 

terminals

solid

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

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

flexible

1 x 1.5 mm² – 35 mm² (1-conductor connection),  

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

stranded

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

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

Tightening torque

2.50 Nm – 3 Nm

General data

Positioning

optional

Max. usage altitude 

above sea level

2000 m

Mechanical  

endurance

min. 5000 switching cycles

Electrical  

endurance

min. 2000 switching cycles

Surrounding 

atmosphere

normal environmental conditions

Storage  

temperature

-35°C – 70°C

Ambient  

temperature

-25°C – 40°C

Resistance to 

climatic changes

in accordance with IEC 60068-2-30

Shock resistance 

20 g/20 ms duration

Vibration  

resistance

> 5 g (f < 80 Hz, duration > 30 min.)

Protective cover

BGV A3, VDE 0660-514, finger and back-of-hand proof 

when used as intended

Mounting

Mounting rail in accordance with EN 60715: 2001 - 9

Housing material

Thermoplast

Protection class

IP20 (front side: IP40)

Dimensions

W 72 mm × H 85 mm × D 75 mm

Installation depth

69 mm

Product standard

IEC 61008-1

1) 

IEC 60269

3930192 | 09/2013

DE EN

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