Schaltbau CF Series User manual

33
Contactors
CF series
Multipole
AC power contactors
for 300 A or 600 A
with NO or NC
switching chambers
Installation and
maintenance instructions
Manual C60-M.en

22021-11-03 / V1.0
Contactors CF Series – Installation and Maintenance Instructions
Document Revision History
Date Rev. version Description Pages
2021-11-03 V1.0 Initial version all
Content
1. Important basic information...............................................................................................................4
1.1 Legal notes..................................................................................................................................................... 4
1.2 Conventions for this manual ................................................................................................................... 4
2. General and safety information..........................................................................................................4
2.1 Observing the manual............................................................................................................................... 4
2.2 Duties of the operating company ......................................................................................................... 5
2.3 Intended use ................................................................................................................................................. 5
2.4 Ambient conditions.................................................................................................................................... 5
3. Hazards and safety precautions..........................................................................................................6
3.1 Electrical hazards ......................................................................................................................................... 6
3.2 Other hazards................................................................................................................................................ 7
3.3 Measures for avoiding damage and malfunctions.......................................................................... 7
4. Product information..............................................................................................................................8
4.1 CF – Multipole AC/DC power contactors ............................................................................................ 8
4.2 Characteristics............................................................................................................................................... 8
4.3 Technical information and material properties................................................................................ 8
5. Description..............................................................................................................................................9
5.1 Modular design ............................................................................................................................................ 9
5.1.1 CF – 1,500 V, 200 and 300 A, AC/DC contactors (NO conguration examples)..................... 9
5.1.2 CF – 3,000 V, 200 and 300 A, AC/DC contactors (NO conguration examples)...................10
5.1.3 CF – 1,500 V/3,000V, 200 and 300 A, AC/DC contactors (NC conguration examples) ....11
5.1.4 CF – 1,500 V/3,000 V, 400 A, AC/DC contactors (NO conguration examples)....................12
5.1.5 CF – 1,500 V, 200 and 300 A, AC/DC contactors (CO conguration examples) ...................13
5.1.6 CF – 3,000 V, 200 and 300 A, AC/DC contactors (CO conguration examples) ...................14
5.1.7 Switching element conguration – 200 and 300 A.......................................................................15
5.1.8 Switching element conguration – 400 A........................................................................................15
5.2 Conguration examples of the CF contactor series (stock items) ...........................................16
5.2.1 Examples of NO and NC contactors (AC/DC) – 200 and 300 A..................................................16
5.2.2 Examples of NO and NC contactors (AC/DC) – 400 A...................................................................17
5.2.3 Examples of CO contactors (AC/DC) – 200 and 300 A..................................................................17
5.2.4 Examples of CO contactors (AC/DC) – 400 A ...................................................................................18
6. Storage...................................................................................................................................................19
7. Unpacking.............................................................................................................................................19
7.1 Unpacking the device ..............................................................................................................................19
7.2 Check parts for transport damage ......................................................................................................19

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
8. Installation ............................................................................................................................................20
8.1 Mounting......................................................................................................................................................20
8.1.1 Dimensions/interfaces and further technical specications .....................................................20
8.1.2 Preparatory measures..............................................................................................................................20
8.1.3 Mounting holes..........................................................................................................................................20
8.1.4 Mounting positions ..................................................................................................................................21
8.1.5 Required minimum clearances.............................................................................................................21
8.1.6 Ventilation requirements........................................................................................................................21
8.1.7 Safety .............................................................................................................................................................21
8.1.8 Tools required .............................................................................................................................................22
8.1.9 Installing the contactor ...........................................................................................................................22
8.2 Electrical connection................................................................................................................................23
8.2.1 Electrical data and other technical specications .........................................................................23
8.2.2 Preparatory measures..............................................................................................................................23
8.2.3 Safety .............................................................................................................................................................24
8.2.4 Tools required .............................................................................................................................................24
8.2.5 Connecting the auxiliary switches ......................................................................................................25
8.2.6 Connecting the coil...................................................................................................................................26
8.2.7 Connecting the earth terminal.............................................................................................................27
8.2.8 Connecting the main contacts .............................................................................................................27
8.3 Checks............................................................................................................................................................32
9. Maintenance.........................................................................................................................................33
9.1 Safety .............................................................................................................................................................33
9.2 Preventive maintenance .........................................................................................................................33
9.2.1 Intervals for regular tests/checks.........................................................................................................33
9.2.2 Regular tests/checks.................................................................................................................................34
9.2.3 Removing the arcing chamber inserts...............................................................................................36
9.2.4 Inserting the arcing chamber inserts .................................................................................................36
9.2.5 Checking the arcing chamber inserts ................................................................................................37
9.2.6 Checking the main contacts..................................................................................................................37
9.3 Corrective maintenance..........................................................................................................................38
9.3.1 Replacing the arcing chamber inserts ...............................................................................................38
9.3.2 Replacing the switching elements......................................................................................................38
9.3.3 Replacing the auxiliary switches..........................................................................................................40
10. Spare parts............................................................................................................................................41
11. Technical data.......................................................................................................................................42
12. Disposal .................................................................................................................................................42

42021-11-03 / V1.0
Important basic information
Contactors CF Series – Installation and Maintenance Instructions
1. Important basic information
1.1 Legal notes
Without prior written consent of SCHALTBAU GmbH,
this manual is not allowed to be electronically or me-
chanically reproduced – as a whole or in parts – be dis-
tributed, changed, transmitted, translated into another
language or used in any other way.
SCHALTBAU GmbH cannot be held liable for damage
caused by non- or only partial observation of the man-
ual.
1.2 Conventions for this manual
This manual describes the installation and maintenance
of the contactors.
Cross references are presented in bold italics.
To highlight particularly important safety instructions
and other information, the following symbols are used
in this manual:
DANGER
Indicates a directly threatening dangerous situation.
Death or severe injuries will result if it is not prevented.
WARNING
Indicates a possibly dangerous situation. Death or
severe injuries may result if it is not prevented.
CAUTION
Indicates a possibly dangerous situation. Medium or
minor injuries may result if it is not prevented.
ATTENTION
Indicates a possibly detrimental situation. If it is not
prevented, assemblies, the system or property in its
surroundings could be damaged.
Indicates technical features and methods
to simplify working or indicates informa-
tion of particular importance.
This manual refers to multi-pole AC/DC power contac-
tors of the CF series with nominal voltages of 1,500 V
and 3,000 V. The contactors can be equipped with both
normally open and normally closed switching ele-
ments.
The CF series devices can be congured as normally
open/normally closed contactors or in combination as
a change-over. Depending on the conguration, the
following abbreviations are used in this manual:
NO = Normally Opened
NC = Normally Closed
CO = Change Over
Due to the high modularity, the CF series devices oer
a wide range of conguration options. Therefore, not all
possible congurations can be presented in this man-
ual.
Even if the congurations shown do not correspond ex-
actly to the present device, the installation and mainte-
nance steps can be carried out identically as described
in this manual.
2. General and safety information
The contactors dealt with in this document are intend-
ed for use with electrical systems for special applica-
tions. They are designed and tested in compliance with
generally accepted codes of practice. However, improp-
er use, operation, handling, maintenance of or tamper-
ing with electric equipment can cause serious or fatal
injury to the user or others, and the appliance or other
property can be damaged. Consequently, the opera-
tion, maintenance and installation instructions for the
contactors must be strictly followed.
If anything is not clear, clarication must be sought
with any queries stating the device type and the serial
number.
Only authorised and trained personnel are allowed to
plan and carry out all mechanical and electrical instal-
lations, transport, commissioning, as well as mainte-
nance and repair work.
This applies to the observation of the general installa-
tion and safety regulations for electrical systems as well
as the proper use of tools approved for this purpose.
Electrical equipment requires protection from moisture
and dust during installation, operation and storage.
2.1 Observing the manual
X All personnel must read and understand the in-
structions in this manual and adhere to them
when working with the device.
X Always adhere strictly to all safety instructions!

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
General and safety information
2.2 Duties of the operating company
X Observe all applicable national regulations, all
safety, accident prevention and environmental
protection regulations as well as the recognised
technical rules for safe and correct working.
X Regularly check all tted protection and safety
equipment for correct function.
X Work on electrical equipment must only be car-
ried out by a qualied electrician or by instructed
persons under the supervision and control of a
qualied electrician in accordance with electrical
regulations.
X A specialist is someone who, on the basis of his
technical training, knowledge and experience as
well as knowledge of the relevant regulations, is
able to assess the work assigned to him and iden-
tify possible dangers.
X Work on the contactors must only be carried out
by personnel who meet the requirements set out
in this manual.
X Personnel must be clearly informed about who is
responsible for the maintenance of the contactors.
X Always perform complete checks after any instal-
lation work and/or after any other conversions, al-
terations or maintenance, in accordance with the
following standards:
-EN/IEC 60077-2
-EN/IEC 60947-4-1
2.3 Intended use
X The contactors have been designed and tested ac-
cording to national and international standards.
Due to their unique features they can also be used
in a wide range of industrial applications.
X The contactors must only be used under operat-
ing conditions according to the technical speci-
cations and the instructions in this manual.
X None of the conditions of use, such as voltages,
currents or ambient conditions, dened in the
corresponding technical data sheets or in our C60
catalogue may be overridden. The catalogue is
available under:
https://www.schaltbau.com/en/media-library/
X The contactors may only be used when all protec-
tive devices are present, have been correctly in-
stalled and are fully operational.
X Contactors may not be used without other safety
precautions in potentially explosive atmospheres
and/or in aggressive media.
X The switching device meets the requirements
of basic insulation. Make sure the frame or plate
onto which the drive of the contactor is mounted
is earthed in a shock and vibration resistant way.
X Do not use the contactor without properly mount-
ed arc chambers or switching element covers.
X The contactor has unprotected live parts and car-
ries labels that warn of the hazard. This warnings
must be observed and the labels must not be re-
moved in any way.
X The prescribed clearances relative to other live
parts or earth and other parts must be complied
with as well as the safety regulations of the appli-
cable standards.
X Switching at close to the maximum breaking ca-
pacity may require increased minimum clearanc-
es! Do not hesitate to ask our advice in respect of
any dimensioning.
X Coil suppression for reducing surges when the coil
is switched o is optimally attuned to the contac-
tor‘s switching behaviour. The existing opening
characteristic must not be negatively inuenced
by parallel connection with an external diode.
X Improper handling of the contactors, e.g. impacts
on the oor, may result in breakage, cracks or de-
formation. Always handle the device with care.
X Only use the contactors for the specied applica-
tion and only with original parts. Any other usage
of or tampering with the contactors is considered
contrary to their intended use. No liability is as-
sumed for damages and accidents caused due to
non-compliance with the instructions in this man-
ual or improper use of the contactors.
2.4 Ambient conditions
ATTENTION
The contactors have been designed for specic am-
bient conditions.
X Only operate the contactors in ambient condi-
tions, such as temperature ranges, degree of
soiling, etc., as dened in the corresponding
data sheets and in our C60 catalogue. The cata-
logue is available under:
https://www.schaltbau.com/en/media-library/

62021-11-03 / V1.0
Hazards and safety precautions
Contactors CF Series – Installation and Maintenance Instructions
3. Hazards and safety precautions
3.1 Electrical hazards
DANGER
The contactors are used for high voltage switching. Contact with live electrical parts can result in
serious injuries or even death!
Live parts are all metal parts belonging directly to one of the circuits or wires connecting to them.
All other visible metal parts and wiring may also be live if a fault exists.
Before starting any work on the contactors, always comply with the following safety rules:
X Disconnect on all sides
X Secure to prevent switching back on
X Clearly identify the working area
X Check that a voltage-free state exists
X Earth and short circuit; this includes discharging any capacitors in the main circuit
X Besides the main power circuits, also disconnect additional and auxiliary circuits
X Cover or insulate adjacent live parts
X The presence of a voltage-free state can only be clearly identied by a qualied electrician.
X When the work has been concluded, follow the procedure in reverse.
DANGER
The contactors are equipped with a protective earth terminal. Without earth connection, metal
parts and wires may be energized in the case of a failure. Risk of serious injuries or even death!
X Make sure that the contactors are connected to earth.
X Make sure that the wire gauge of the earthing cables complies with the specic short circuit
conditions.
DANGER
In the case of a failure of the equipment;
X don‘t use it anymore
X immediately contact the manufacturer.
DANGER
Interventions in the equipment may cause serious impairments to the safety of men and constructi-
ons. They are not permissible and lead to an exclusion of liability and warranty.
DANGER
All checks and the replacement of components or groups of components may only be carried out
by qualied personnel according to the instructions of Schaltbau. All spare parts must be parts deli-
vered by or released by Schaltbau.

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
Hazards and safety precautions
3.2 Other hazards
WARNING
Contactors must only be used for the purposes specied in the specications and data sheets. Incor-
rect use can cause accidents and severe personal injury.
X The manufacturer will not be responsible for accidents arising from improper use of the product.
CAUTION
During continuous operation the contactors may become hot. Risk of burns!
X Before beginning any checks or maintenance on the contactors ensure that the heated com-
ponents have cooled down.
CAUTION
The contactors contain sharp-edged parts. Risk of injuries!
X Use appropriate tools for installation and maintenance work on the contactors.
X Wear safety gloves when handling sharp-edged components.
3.3 Measures for avoiding damage and malfunctions
ATTENTION
Aggressive liquids may damage the contactors.
X Ensure the contactors do not come into contact with aggressive liquids.
ATTENTION
Improper handling of the contactors, e.g. dropping on the oor, can result in breaks, cracks and deformation.
X Ensure the contactors are always handled correctly.
X Do not throw the contactors on the oor.
X At regular intervals perform a visual check of the contactors for possible damage.
X Immediately replace any damaged parts.
ATTENTION
Depending on the product type, contactors can contain permanent magnets. Such magnets can attract ferro-
magnetic parts resulting in damage to the contactors.
X Ensure that the contactors are installed in a location where it is not possible for them to attract any ferro-
magnetic parts.
ATTENTION
Depending on the product type, contactors can contain permanent magnets. These permanent magnets can
destroy the data on the magnetic strips of credit or similar cards.
X Keep credit or similar cards away from the contactors.

82021-11-03 / V1.0
Product information
Contactors CF Series – Installation and Maintenance Instructions
ATTENTION
During switching o, strong electromagnetic elds are generated in the vicinity of the contactors. These may
inuence other components close to the contactors.
X Make sure that the contactors are installed in a location where no other components are aected.
ATTENTION
In the case of damage, wear and/or soiling of the contactors - in the form of a partial break, sharp edges and
discoloured surfaces - the functional reliability of the contactors is no longer ensured.
X Visually inspect the contactors regularly to detect wear and soiling.
X Replace damaged parts immediately.
X Immediately remove any soiling without leaving any residues.
X Immediately replace any parts with persistent soiling.
ATTENTION
Detent-edged rings and detent-edged washers have a limited life time. After screws secured with detent-edged
rings or detent-edged washers have been undone three times, the rings or washers must be replaced by new
ones.
X Record the frequency of undoing of the screws in the work log.
X Replace detent-edged rings or detent-edged washers with new ones after the screws have been undone
three times.
4. Product information
4.1 CF – Multipole AC/DC power
contactors
The highly modular CF series comes with compact
1-pole up to 6-pole AC/DC power contactors for loads
up to 600 A and 3,000 V for inverter-fed alternating cur-
rent drives with higher frequencies. One special feature
are the newly developed switching elements. These
can be universally congured as NO, NC or in combina-
tion as a change-over (CO).
An ecient electronic economy circuit reduces power
consumption as well as heat loss and saves costs.
CF contactors can be adapted in many ways. The high
variance makes the devices interesting for use in many
dierent applications. The innovative switchgear is
equally ideal for new projects and modernisation. They
can successfully replace cam contactors that have prov-
en themselves over many years.
Easy maintenance:
X Toolless inspection of main contact tips
X Toolless replacement of the arc chamber inserts
4.2 Characteristics
X Compact dimensions – high performance range:
1,500 or 3,000 Volt AC/DC, 3x 600 amps, frequen-
cies up to 400 Hertz
X Innovative application-dependent arcing cham-
ber design – congurable as NO, NC or change-
over (CO) contact
X High thermal continuous current 200, 300 and
400 amps or 600 amps through parallel connec-
tion of two main contacts each and a high rated
short-time withstand current up to 4,000 amps
X Up to 4 auxiliary switches for diagnosis and switch-
ing status monitoring
X Low energy consumption and low heating thanks
to sophisticated coil saving circuit
4.3 Technical information and material
properties
For technical information and material properties, refer
to the corresponding data sheets and to our C60 cata-
logue. The catalogue is available under:
https://www.schaltbau.com/en/media-library/

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
Description
5. Description
5.1 Modular design
5.1.1 CF – 1,500 V, 200 and 300 A, AC/DC contactors (NO conguration examples)
A
C
B
C
Fig. 1: 1,500 V, 200 and 300 A, AC/DC contactors – coil drive designs and switching elements (NO conguration examples)
A Coil drive wide (2 drives)
B Coil drive small (1 drive)
C Switching elements
with NO conguration:
- max. 6 switching elements with coil drive wide
- max. 3 switching elements with coil drive small

10 2021-11-03 / V1.0
Description
Contactors CF Series – Installation and Maintenance Instructions
5.1.2 CF – 3,000 V, 200 and 300 A, AC/DC contactors (NO conguration examples)
For contactors with 3000 V, insulating plates are re-
quired between the switching elements and, depend-
ing on the installation situation, on the two outer sides.
A
C
B
C
D
D
E
E
E
E
Fig. 2: 3,000 V, 200 and 300 A, AC/DC contactors – coil drive designs and switching elements with insulating plates
(NO conguration examples)
A Coil drive wide (2 drives)
B Coil drive small (1 drive)
C Switching elements
with NO conguration:
- max. 6 switching elements with coil drive wide
- max. 3 switching elements with coil drive small
D Insulating plates (required for 3,000 V contactors)
E Insulating end panels (required for 3,000 V contactors)

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Description
5.1.3 CF – 1,500 V/3,000V, 200 and 300 A, AC/DC contactors
(NC conguration examples)
A
C
C
B
Fig. 3: 1,500 V/3,000V, 200 and 300 A, AC/DC contactors – coil drive designs and switching elements
(NC conguration examples)
A Coil drive wide (2 drives)
B Coil drive small (1 drive)
C Switching elements
with NC conguration:
- max. 4 switching elements with coil drive wide
- max. 2 switching elements with coil drive small

12 2021-11-03 / V1.0
Description
Contactors CF Series – Installation and Maintenance Instructions
5.1.4 CF – 1,500 V/3,000 V, 400 A, AC/DC contactors (NO conguration examples)
A
C
B
C
Fig. 4: 1,500 V/3,000 V, 400 A, AC/DC contactors – coil drive designs and switching elements (NO conguration examples)
A Coil drive wide (2 drives)
B Coil drive small (1 drive)
C Switching elements (400 A)
- max. 4 switching elements with coil drive wide
- max. 2 switching elements with coil drive small

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Description
5.1.5 CF – 1,500 V, 200 and 300 A, AC/DC contactors (CO conguration examples)
A changeover (CO) contactor conguration is obtained
by combining one NO and one NC switching element
and connecting the main contacts on one side.
In this way, up to 3 CO contactors can be set up with
the wide coil drive and 1 CO contactor with the small
coil drive.
A
B
C1 C2 C1 C2 C1 C2
C1 C2
Fig. 5: 1,500 V, 200 and 300 A, AC/DC contactors – coil drive designs and switching elements (CO conguration examples)
A Coil drive wide (2 drives)
B Coil drive small (1 drive)
C1 Switching elements with NO conguration
C2 Switching elements with NC conguration

14 2021-11-03 / V1.0
Description
Contactors CF Series – Installation and Maintenance Instructions
5.1.6 CF – 3,000 V, 200 and 300 A, AC/DC contactors (CO conguration examples)
For contactors with 3,000 V, insulating plates are re-
quired between each pair of CO switching elements
and, depending on the installation situation, on the
two outer sides.
A
B
C1 C2 C1 C2 C1 C2
D
E
E
C1 C2
E
E
Fig. 6: 3,000 V, 200 and 300 A, AC/DC contactors – coil drive designs and switching elements with insulating plates (CO congu-
ration examples)
A Coil drive wide (2 drives)
B Coil drive small (1 drive)
C1 Switching elements with NO conguration
C2 Switching elements with NC conguration
D Insulating plates (required for 3,000 V contactors)
E Insulating end panels (required for 3,000 V contactors)

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
Description
5.1.7 Switching element conguration – 200 and 300 A
C
D
E
F
G
or or
J H
Fig. 7: Switching element 200 and 300 A (NO conguration example) and arcing chamber inserts
C Switching element (NO conguration example)
D Latch / unlatch button
E Ceramic arcing chamber insert
F Arcing chamber insert with metal arcing plates
G Plastic arcing chamber insert
H Pole plates – only for DC versions (unidirectional)
J Magnetic cores – only for DC versions (unidirectional)
5.1.8 Switching element conguration – 400 A
C
D
or
or
J H
GFE
Fig. 8: Switching element 400 A (NO conguration example) and arcing chamber inserts
C Switching element (NO conguration example)
D Latch / unlatch button
E Ceramic arcing chamber insert (2x)
F Arcing chamber insert with metal arcing plates (2x)
G Plastic arcing chamber insert (2x)
H Pole plates – only for DC versions
J Magnetic cores – only for DC versions

16 2021-11-03 / V1.0
Description
Contactors CF Series – Installation and Maintenance Instructions
5.2 Conguration examples of the CF contactor series (stock items)
5.2.1 Examples of NO and NC contactors (AC/DC) – 200 and 300 A
Type of
coil drive
No. of
poles
1,500 V 3,000 V
NO NC NO NC
small
1
2
3--- ---
wide
4
6--- ---
Fig. 9: Conguration examples of 200 and 300 A, NO/NC contactors (the gures show DC versions, AC versions are similar but
without pole plates and magnetic cores)

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
Description
5.2.2 Examples of NO and NC contactors (AC/DC) – 400 A
Type of
coil drive
No. of
poles
1,500 V 3,000 V
NO NC NO NC
small
1
2
wide 4
Fig. 10: Conguration examples of 400 A NO/NC contactors (the gures show DC versions, AC versions are similar but without pole
plates and magnetic cores)
5.2.3 Examples of CO contactors (AC/DC) – 200 and 300 A
Type of
coil drive
No. of
poles
1,500 V 3,000 V
CO CO
small 2
wide
4
6
Fig. 11: Conguration examples of 200 and 300 A CO contactors (the gures show DC versions, AC versions are similar but without
pole plates and magnetic cores)

18 2021-11-03 / V1.0
Description
Contactors CF Series – Installation and Maintenance Instructions
5.2.4 Examples of CO contactors (AC/DC) – 400 A
Type of
coil drive
No. of
poles
1,500 V 3,000 V
CO CO
small 2
wide 4
Fig. 12: Conguration examples of 400 A CO contactors (the gures show DC versions, AC versions are similar but without pole
plates and magnetic cores)

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2021-11-03 / V1.0 Contactors CF Series – Installation and Maintenance Instructions
Storage
6. Storage
ATTENTION
Moisture and dust can damage the contactors. If the
device is to be stored for a prolonged period of time:
X Store the device in its original packaging,
X Store the device in a dry and dust-free location.
Return shipments
Schaltbau recommends retaining the original packag-
ing for any return shipments.
If the original packaging is not available, care must be
taken to pack the contactor in a way that prevents dam-
age during shipment.
7. Unpacking
7.1 Unpacking the device
X Before opening the packaging, perform a visual
inspection for any signs that could indicate dam-
age having occurred during transport (impacts,
bumps, dropping, etc.).
X If any signs indicate that the contactor has been
subject to excessive impacts do not install it.
7.2 Check parts for transport damage
ATTENTION
If parts are damaged, functional reliability of the con-
tactor has been lost.
X Before installing, check all parts for possible
transport damage.
X Do not install damaged parts.

20 2021-11-03 / V1.0
Installation
Contactors CF Series – Installation and Maintenance Instructions
8. Installation
8.1 Mounting
8.1.1 Dimensions/interfaces and further
technical specications
The dimensions and other technical specications are
given in the respective data sheets or can be found in
our C60 catalogue. The catalogue is available under:
https://www.schaltbau.com/en/media-library/
8.1.2 Preparatory measures
X A suitable mounting plate with 4 mounting holes
in accordance with the following dimensional
drawings (Fig. 13 and Fig. 14) must be provided for
fastening of the contactors.
X The mounting holes can be either:
-threaded holes (for threaded screws)
-or through holes (for threaded screws and nuts)
X Fastening of the contactors on the mounting plate
is performed using 4 M mounting screws.
-The length of the mounting screws must be de-
termined dependent on the structural circum-
stances.
-To secure the mounting screws so that they
do not come loose, appropriate screw locking
elements must be provided. Schaltbau recom-
mends using Schnorr washers (or similar).
-The mounting screws must be equipped with
washers (resting on the device). Installation
without washers is not permitted!
-The mounting screws (and if applicable the
nuts) must be strength class 8.8 or higher.
-The mounting screws must be tightened to
the specied torque, which depends on the
strength class (min. 8.8) of the screws/nuts used.
8.1.3 Mounting holes
[mm]
50±0.1
125±5
or M6
4 x Ø 7
±0.1
Fig. 13: Dimensions and layout of mounting holes for coil
drive wide (dimensions not to scale)
50±0.1
116.5±0.1
or M6
4 x Ø 7
±0.1
[mm]
Fig. 14: Dimensions and layout of mounting holes for coil
drive small (dimensions not to scale)