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, SUVA and TUV
2 N.C. & 1 N.O. direct opening action
500V 250V 100V
1A 2A 5A
250V 0.5A 24V 2A
5V 5mA DC
11° maximum; 5° minimum, (adjustable)
12cNm (torque on shaft)
160mm per sec (6.29in)
1 Cycle per sec
Heavy duty die cast alloy
M20 or quick-disconnect style
-25°C to +80°C (-13°F to 176°F)
2 x M4
Thermal Current (lth)
A heavy-duty hinge actuated safety interlock switch, the Rotacam shaft
can be used as, or connected to, the existing hinge pin for direct
operation of the switch. Machine power is isolated when the guard
has been opened just 5°. For applications requiring a larger degree of
operation the internal cam can be adjusted from 5° to 11°.
After adjustment, the cam must be secured in position with the
Safety Contact Gap
Rtd. Insulation Voltage
Rtd. Impulse withstand
Shaft Rotation to Achieve
Break Contact Min Force
Max Actuation Speed
Max Actuation Frequency
supplied cam locking pin to ensure optimal performance.
The Rotacam is available with two N.C. safety contacts and one N.O.
auxiliary contact. The switch includes the necessary safety related
functions, such as forced guided contacts and a tamper resistant
mechanism, allowing machinery to be safeguarded in compliance
with the machinery directive.
The die-cast housing is sealed to IP66 and features one M20 conduit
entry (1/2in NPT and connector style also available). Two different
shaft lengths of 30mm and 85mm can also be specified.
EX and Pneumatic styles of Rotacam are also available; see the
section on page 16-1 for more information.
• Can be used as a hinge pin on light and medium weight guard
• Isolates power within 5° of door movement
• Degree of operation can be customized with adjustable cam
• Robust die-cast case, ideal for heavy duty applications
• Contacts, 2 N.C. & 1 N.O.
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.
The actuator shaft is pre-bored
allowing the existing hinge pin to be
utilised as the flexing point.
The solid actuator shaft can be
used as the hinge pin on certain
L = 30 (1.18)
D= 16 (0.63)
L = 85 (3.35)
D= 12.7 (0.5)
Recommended standard cordset, 2m (6.5ft). See page 15-10 for additional lengths.
Approximate Dimensions—mm (inches)
Dimensions are not intended to be used for installation purposes.
2 x holes 3.2 (0.13)
2 x holes M4
Holes only on pre-bored models.
Typical Wiring Diagrams
Safety Circuit 1
Safety Circuit 2
2 N.C. + 1 N.O.
2 N.C. + 1 N.O. (BBM)