Interlock Switches
Guard Locking Switches
Centurion
Specifications
Standards
EN954-1, ISO13849-1, IEC/EN60204-1,
NFPA79, EN1088, ISO14119, IEC/
EN60947-5-1, ANSI B11.19, AS4024.1
Cat. 1 Device per EN954-1
Dual channel interlocks suitable for
Cat. 3 or 4 systems
CE marked for all applicable directives,
cULus, BG, and SUVA
2 N.C. direct opening action
AC15
500V 250V 100V
1A 2A 5A
250V 0.5A 24V 2A
500V/500VA
10A
5V 5mA
>2mm (0.078in)
(Ui) 500V
(Uimp) 2500V
1 N.C.
2mm (0.078in)
Heavy duty die cast alloy
Stainless Steel
IP66
1 x M20 or quick disconnect
-25°C to +80°C (-10°F to +176°F)
2 x M4
1,000,000 operations
1,000,000 operations
500g (1.20lbs)
Red
Category
Approvals
Safety Contact
Designation/Utilization Cat.
AC (Ue)
(Ie)
DC
73013
Description
The Centurion is a positive mode, thumbwheel operated machine
guard locking interlock switch that locks the guard closed until the
operator manually rotates the thumbwheel, retracting the shaft from
the guard door. The action of retracting the shaft initiates two
functions; it isolates the power to the machine while the guard is open
and, due to the operating principle, gives up to 20 seconds delay
before the guard can be opened.
Alternative styles with longer shafts can increase the time delay by as
much as 50%. The Centurion is ideal for use on simple machines
with short, constant run down times. It is important that correct
installation and operation of the unit are followed to ensure that the
retractable shaft cannot be extended when the guard is open. For
machines with long or variable run down times or where frequent
access is required, solenoid locking switches such as the TLS-GD2
and Atlas 5 should be considered.
The Centurion has 2 safety (N.C.) contacts, 1 auxiliary (N.O.) contact
and 1 conduit entry (either M20 or quick disconnect).
EX and Pneumatic styles of the Centurion are also available; see the
Explosion Proof
section on page 16-1 for more information.
Note: Additional safety measures (i.e., a shroud) should be used
to ensure the thumbwheel can only be accessed by fingertips.
Max Switched Current/Volt/
Load
Thermal Current (lth)
Min Current
Safety Contact Gap
Rtd. Insulation Voltage
Rtd. Impulse withstand Volt
Auxiliary Contacts
Shaft Movement to Achieve
Contact Operation
Case Material
Locking shaft
Protection
Conduit Entry
Operating Temperature
Mounting
Mechanical Life
Electrical Life
Weight
Colour
Note:
The safety contacts of the Guardmaster switches are described as normally
closed (N.C.) i.e., with the guard closed, actuator in place (where relevant) and the
machine able to be started.
Features
•
•
•
•
Manually operated time delay, allows for machine run down
Simple operation & installation
Robust die cast housing, ideal for heavy duty applications
Contacts, 2 N.C. & 1 N.O. (sealed to IP66)
Centurion Thumbwheel Operation
Interlocking shaft is manually
retracted from the guard by
rotating the thumbwheel.
3-40
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