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Castell Safety International Limited reserves the right to alter specifications and introduce improvements without prior notice.
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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.
1
2
3
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.
