Castell KS20-FSS-P-C/O4 User manual

While every effort has been made to ensure the accuracy of the information provided, no liability can be taken for any errors or omission.
Castell Safety International Limited reserves the right to alter specications and introduce improvements without prior notice.
www.castell.com
1 of 6
U-KS-001-E Issue 2
KS Powersafe Electrical Switch
User Manual - Original Language Version
The KS is a key driven electrical switch designed for machine
control circuits. This type of isolator should be used for short
term, off load isolation. The KS is manufactured from either
brass or stainless steel making it ideal for use in normal and
harsh corrosive environments where the lock is subject to heavy
use. The unit is able to be mounted into an existing panel or
for surface mounting within its own polycarbonate IP65 rated
enclosure.
Operation
KS20-FSS-P-C/O4
The Castell KS powersafe electrical key switch is used for machine isolation in order to protect the hazardous area from
access while power is on.
1. While the power is on and a machine is running, the key is trapped in the KS key switch.
2. By turning and removing the key out of the switch, the contacts condition in the KS changes, switching the
power off.
3. The key now can be taken to open the door lock and gain acces to the machine area.
The KS is available for different switching loads as KS20, KS32 or KS63 (20, 32 or 63 amps power isolation respectivly). Please
refer to drawing on page 6 for more details.
The KS comes with 4 contacts as standard with contacts arrangements as 2NO/2NC, 4NC, but auxiliary set of contacts are
available on request.
The KS is available as a back of panel mount version or as a front of panel mount with an enclosure. Please refer to drawing on
page 6 for more details.
123
Key is trapped, while
power is on.
Key is free, power is off.
KS20 powersafe electrical switch, back on panel mount
Turn and remove key to switch
the power off by changing the
contacts arrangement.

While every effort has been made to ensure the accuracy of the information provided, no liability can be taken for any errors or omission.
Castell Safety International Limited reserves the right to alter specications and introduce improvements without prior notice.
www.castell.com
2 of 6
U-KS-001-E Issue 2
KS Powersafe Electrical Switch
User Manual - Original Language Version
The KS powersafe electrical key switch is designed to be part of a safety system and is used to isolate the power releasing a key
which is then used to gain access to a hazardous area via an access interlock such as the AI, AIE or Salus.
The KS key switch is not designed for security purposes.
No hazardous substances were used in the manufacture of this product. The product can be disposed of in standard waste.
Usage
Installation
Front of panel units should be mounted to a at surface using 4 off suitable xing screws. Offer up back box of enclosure in
desired position and use mounting holes as a drilling template.
Back of panel units should be mounted to a at surface using suitable fasteners (please refer to drawing on page 4 for more
details). The lock face should be sealed to the panel for ingress protection.
Cables should be connected to the switch (via the cable gland for front of panel) in accordance with the applicable wiring
diagrams. Ensure that the unit is bonded for earth continuity (see drawing on page 4 for more installation details).
IMPORTANT:
The interlock should be mounted using anti-tamper fasteners to prevent unauthorised removal.
The KS range of switches must be installed by a competent and qualied person who has read and understood these
instructions. Please retain this document in your technical le.
Maintenance
Periodic visual checks should be carried out by the site manager / safety ofcer.
Do not lubricate lock barrel with oil or grease, use CK Dry Powder Graphite if necessary.
In case of defects beeing detected please contact your nearest Castell Support Department for further actions.
Please see Contact section for contact details.

While every effort has been made to ensure the accuracy of the information provided, no liability can be taken for any errors or omission.
Castell Safety International Limited reserves the right to alter specications and introduce improvements without prior notice.
www.castell.com
3 of 6
U-KS-001-E Issue 2
KS Powersafe Electrical Switch
User Manual - Original Language Version
Technical Data
Temperature rating -25 °C ice free to 55 °C
Type of mounting Surface or panel mount using suitable fasteners (please refer to drawing on page 4 for more details)
Weight
KS20: Front of board mount = 0,8 kg / back on board mount = 0,6 kg
KS32: Front of board mount = 0,8 kg / back of board mount = 1 kg
KS63: 1,5 kg
Material Brass/Stainless steel
Enclosure Polycarbonate IP65
Power isolation 20A, 32A, and 63A options available
Motor Isolation (AC Values)
KS20: AC-23A 7.5kW or AC-3 5.5kW
KS32: AC-23A 15kW or AC-3 11kW
KS63: AC-23A 30kW or AC-3 18.5kW
Switch approvals CE, CCC
MTTF Certication Available on request
We, the manufacturers, declare that the components, detailed herein and placed on the market, comply with all the essential
health and safety requirements applying to them.
Empowered signatory:
Mr T.C. Whelan
Managing Director
EC-Declaration
Application
A typical application of KS powersafe electrical switch
is machine guarding. It is usually used in combination
with an access interlock such as the Salus for part body
access or an access interlock with an exchange key for
full body access control such as AIE.
The KS breaks the machine safety circuit, ensuring
a machine is shut down when the key is turned and
removed. The key can then be taken to the Salus
automativ access interlock to enable access to the
machine.
The machine cannot be restarted until the door is closed,
the bolt is trapped in the access interlock and the key is
removed and taken to the KS key switch.
KS20 Key Switch Salus Access Interlock

While every effort has been made to ensure the accuracy of the information provided, no liability can be taken for any errors or omission.
Castell Safety International Limited reserves the right to alter specications and introduce improvements without prior notice.
www.castell.com
4 of 6
U-KS-001-E Issue 2
KS Powersafe Electrical Switch
User Manual - Original Language Version
Drawing
Dimensions:
in mm
Note: For safe mounting, use security screws
KS20, FOB (Front of board, enclosure)
KS20, BOB (Back of board)

While every effort has been made to ensure the accuracy of the information provided, no liability can be taken for any errors or omission.
Castell Safety International Limited reserves the right to alter specications and introduce improvements without prior notice.
www.castell.com
5 of 6
U-KS-001-E Issue 2
KS Powersafe Electrical Switch
User Manual - Original Language Version
Wiring Diagram
Key Free, Switch off
Key Free, 2 NO/2NC

While every effort has been made to ensure the accuracy of the information provided, no liability can be taken for any errors or omission.
Castell Safety International Limited reserves the right to alter specications and introduce improvements without prior notice.
www.castell.com
6 of 6
U-KS-001-E Issue 2
KS Powersafe Electrical Switch
User Manual - Original Language Version
Contact Information
Order Information
Accessories
Product Part number
Flip Cap FLIP-S
Product Type 1 2 3 4 5 6
Part Number KS - - -
Example KS 20 -FS B -P-C/O 4
7
ABC
1Isolation
20 amps
32 amps
63 amps
2Lock portion type FS (1) / Q (1)
3Material B = Brass / S = Stainless steel
4Mounting P = Panel mount (back of board)
F = Front of board mount, with enclosure
5Contacts arrangement in normal position C/O = NO/NC arrangement (contacts closed/opened)
CC = NC arrangement (all contacts closed)
6Contacts number 4 (standard)
7Lock portion symbol FS (1) up to 3 characters / Q (1) up to 6 characters
(1) FS - Lock type Q - Lock type
Up to 3 characters Up to 6 characters
Special construction available upon enquiry
Castell Safety International Ltd.
The Castell Building
217 Kingsbury Road
London, England NW9 9PQ
t: +44 (0) 20 8200 1200
f: +44 (0) 20 8905 9378
Castell Safety International Ltd.
Oskar-Jäger-Strasse 137
50825 Köln
Germany
t: +49 (0) 221 1694 794
f: +49 (0) 221 1694 795
Castell Interlocks Inc.
Suite 800
150 N Michigan Avenue,
Chicago, Illinois 60601
USA
t: +1.312.360.1516
f: +1.312.268.5174
Castell Safety China
Building 1, No. 123,
Lane 1165, Jindu Road,
Minhang District,
Shanghai 201108, China.
t: +86 21 61519023
f: +86 21 61519030
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