Interlock Switches
Non contact Switches
Ferrogard GS1 & GS2
Specifications
Standards
EN954-1, ISO13849-1, IEC/EN60204-1,
NFPA79, EN1088, ISO14119,
ANSI B11.19, AS4024.1
Category
Approvals
Cat. 1 Device per EN954-1
Dual channel interlocks suitable for Cat.
3 or 4 systems
GS1 and GS2 CE marked for all applicable directives
and cULus
GS2 Ex EExd IIC T6 Baseefa
Operating Distance – Make
GS1
GS2 12mm (0.47in)
15mm (0.59in)
Operating Distance – Break
Description
GS1
GS2 23mm (0.91in)
26mm (1.02in)
The Ferrogard range of magnetically actuated safety switches offers
Non contact reliability together with tolerance to misalignment.
They are designed to be installed so that when a guard door is
opened, the action of the magnetic actuator being removed from the
switch opens the N.C. safety contacts which are intended for the
isolation of control power to a machine primary control element.
Closing Time
3.0ms
2.1ms
0.7ms
15mW
Dropout Time
Bounce Time
Initial Contact Resistance
Initial Capacitance, Terminal 0.65pF
to Terminal
The GS1 and GS2 are designed for heavy duty applications. The
GS1 is housed in a stainless steel or brass housing. The GS2 offers the
same characteristic as the GS1, but in an Ex housing for hazardous
locations.
6
Initial Insulation Resistance,
Te rm ina l to Te rm i na l
1 x 10
Ω
Safety Contact Switching
Capability
250V AC 2A max
< 1.6A quick blow
600V AC
Unlike some magnetic switches the Ferrogards have protected safety
contacts to help ensure that they do not fail to danger.
Safety Contact External
Fusing
All Ferrogards have internal non-resettable overload protection on
the safety contact. They should be protected by an external fuse
rated as shown in the specifications table.
Min Initial Breakdown
Voltage
Operating Temperature
Enclosure Protection
-25°C to +125°C (-13° to +257°F)
IP68 (NEMA 6P)
See the Explosion Proof section on page 16-1 for more
information on the EX version of the Ferrogard GS2.
Cable
2
GS1 Brass
0.75 mm (18AWG) 2 wire
Grey PVC Jacket OD 6mm (0.24in)
Features
Stainless Steel
GS2
2
0.75 mm (18AWG) 2 wire
•
•
•
•
•
Non contact actuation
White PVC Jacket OD 7mm (0.28in)
2
High tolerance to misalignment
High switching current (2A AC)
Metal housings (IP 68)
1.34 mm (16AWG) 2 wire Braided
Polyolefin Jacket OD 8.4.mm (0.32in)
Case Material
Mounting
Stainless Steel or Brass
Ex version available
Any Position
M3 mounting security screws included.
Weight (not including cable)
GS1 Brass
GS1 Steel 381g (0.84lbs)
Actuator 388g (0.86lbs)
116g (0.26lbs)
6
Electrical Life
1 X 10 at rated load
6
Mechanical Life
10 X 10
Vibration
Shock
15g, 20 to 1000Hz
50g
Ex Version
See Explosion Proof Section
3-52