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GSS Series
Hinge Mount Safety
Limit Switch
The Hinge Mount Safety Limit Switch is designed for use on machine access doors as an alternative solution
to key operated interlocks and safety limit switches. When the access door is opened, a follower pin (not
supplied) slides down the slot in the actuator lever, forcing the actuator lever to rotate and positively open the
NC safety circuit to shut off the machine. Closing the access door rotates the actuator lever to the reset
position, closing the NC safety contacts.
The Hinge Mount Safety Limit Switch minimizes alignment problems because it may be offset-mounted from
the hinge point of the door. The tamper-resistant design and the positive opening contacts provide a higher
level of safety than the conventional spring-driven limit switches often used to monitor door position.
Low Energy Switching
In today’s demanding age of low energy controls, electromechanical switches are frequently used to interface
directly with safety relays, PLCs and other low energy devices. To accommodate this requirement GSS offers
a new gold plated contact version of the standard basic switch. This improves reliability of switching at low
currents and voltages by protecting the contact surfaces from contamination during operation or storage
prior to use.
Standard silver contacts have a disadvantage in that the contact surface may tarnish under certain
environmental conditions, e.g. in the presence of moisture.
Low energy basic switches are rated as follows:
Operating Voltage U
e 1 Vdc to 60 Vdc or 1 Vac to 125 Vac
Operating Current Ie 1 mA to 50 mA
Example of catalog listing using a low energy basic switch - GSCB33S2.
Switching options:
GSC/D GSE
Snap action contacts (1NC/1NO) Slow action contacts (4NC)
Zb
2221
14
13
11
12
21
22
31
32
4Y
41
42
Slow action contacts (1NC/1NO) BBM Slow action contacts (2NC/2NO) BBM
Zb
21
13
22
14
11
12
21
22
33
34
2Y, 2X
43
44
Slow action contacts (2NC) Slow action contacts (3NC/1NO) BBM
11
21
12
22
2Y
2221
11
12
3231
4443
3Y, 1X
IEC 60947-5-1/EN 60947-5-1
Designation & Utilization
Rated operational current le (A) VA
Category
at rated operational voltage Ue rating
120 V 240 V 380 V 480 V 500 V 600 V Make Break
AC15 A600 6 3 1,9 1,5 1,4 1,2 7200 720
AC15 A300 6 3 ----7200 720
AC15 B300 3 1.5 ----3600 360
AC14 D300 0,6 0,3 ---- 43272
125 V 250 V
DC13 Q300 0,55 0,27 69 69
DC13 R300 0,22 0,1 28 28
Electrical ratings:
SAFETY SWITCHES