MICRO SWITCH Key-Operated Safety Interlock Switch 004790
GK Series Issue 1
Datasheet
FEATURES
Electrostatic epoxy coated die-cast zinc housing with the
EN50041 30 x 60 mm mounting
Four different types of stainless steel keys
1NC/1NO, 2NC, 2NC/1NO, 2NC/2NO, 3NC/1NO, 4NC
contact options
Positive opening operation of normally closed contacts
to EN/IEC 60947-5-1-3 specification
Normally open (NO) contacts to indicate key has been
removed
Unique friction feature design for key retention
Dual entry head design (side or top entry) for key; up to eight
different key entry positions
Optional one or two integral LEDs in cover of switch for
DESCRIPTION
monitoring switch signal and/or output status
MICRO SWITCH GK Series switches are key-operated safety
Different conduit options for global applications
interlock rugged metal switches which monitor the positions
Operating temperature range of -25 C to 85 C
of gates, guards, or doors. The key is attached to the moving
[-13 F to 185 F]
portion of the gate, guard, or door. When the gate is closed, the
Switch body environmentally sealed to IP67 and
key is inserted into the GK switch indicating a safe position (gate
NEMA 1, 4, 12, & 13
closed) and the machine process can start. The positive opening
CE, CSA, and UL agency certifications
normally closed contacts are held closed when the key is
Designed and agency evaluated for safety functions up to and
inserted into the GK switch. Opening the gate, removes the key
including a SIL3 level
from the switch. This action opens the normally closed contacts
of the switch and interrupts the machines control circuit.
POTENTIAL APPLICATIONS
GK Series switches are designed with dual-entry positions for
Hinged or sliding gates, guards, or doors for:
the key. The key can be inserted from the top or side of the
- Machine tool and metalworking equipment
switch which allows more flexibility in mounting the switch in the
- Plastic molding equipment
application. There are four different styles of keys and a variety
- Robotic cells
of switch contact arrangements to satisfy the requirements for
- Special purpose machinery
most applications requiring a safety interlock key switch. GK
Series switches are designed with a unique friction feature for
DIFFERENTIATION
key retention. GK Series switches have been evaluated for safety
Up to four contacts within each switch for control circuit
functions up to and including a safety integrity level (SIL) of SIL3
applications (NC contacts) and auxiliary contacts (NO
when evaluated to the requirements of IEC 61508-2:2010.
contacts) to indicate the key removal from the switch
Optional one integral LED to indicate power to the switch or
two integral LEDs to indicate power to the switch and output
VALUE TO CUSTOMERS
status of the switch
Unique friction feature design for key retention
Designed and evaluated for safety functions up to and
Positive opening of all normally closed contacts when key is
including a SIL3 level
removed from the switch
Electrical connection via threaded conduit and terminal screws
PORTFOLIO
or an integral mini style 10-pin connector
Honeywell safety interlocking switches include the metal
GK Series switch mount to a standard EN50041 30 x 60 mm
solenoid GKL/R Series, miniature plastic GKM Series, EN50047
dimension
plastic body GKE Series, and plastic body GKN Series.
Different styles of stainless steel keys to accommodate hinged
Honeywell also offers non-interlocking safety switches (GSS
or sliding doors, gates, or guards
Series), non-contact safety switches (FF Series) and cable/rope-
pull safety switches (1CPS & 2CPS Series).
Sensing and Productivity SolutionsMICRO SWITCH Key-Operated Safety Interlock Switch, GK Series
Table 1. Specifications
Characteristic Parameter
Description Dual entry key operated safety interlock switch
CSA (C22.2 No.14. File 57323),
Certifications UL (per UL508, File E37138),
CE (per IEC 60947-1, IEC 60947-5-1)
Housing material Epoxy coated die-cast zinc
Key (actuator) material Stainless steel
Conduit/electrical connection 0.5-14 NPT, 20 mm, PG 13,5 threaded conduit; 10-pin mini style connector
Contact/switch options* 1NC/1NO; 2 NC; 2NC/2NO; 3NC/1NO; 4NC
Contact design Double break, electrically separated
Contact material Silver alloy (standard); gold-plated silver alloy (for low energy applications)
Utilization category AC15, A300/A600**; DC13 Q300
Rated operational voltage (Ue) 240 Vac, 600 Vac, 250 Vdc
Rated operational current (Ie) 3 A, 1.2 A, 0.27 A
Thermal current (Ith) 10 A
Rated insulation voltage (Ui) 300 V, 600 V
Rated impulse withstand
2500 V
voltage (Uimp)
Short circuit protective device
Class J fuse (10 A/600 V)
(SCPD)
Conditional short-circuit
1000 A
current
Pollution degree 3
Environmental sealing IP67; NEMA 1, 4, 12, & 13
Operating temperature -25 C to 85 C [-13 F to 185 F]
Shock 50 G per IEC 60068-2-27
Vibration 10 G per IEC 60068-2-6
MCTF (Mechanical life) >1,000,000 cycles with single-sided confidence limit of 95 %
MCTF (Electrical life) >60,000 cycles
SIL Capability Up to and including SIL3 (HFT1), IEC 61508-2:2010
Proof test interval 1 year
GLC Series with 1 LED pilot light in front cover (supply voltage 12 Vac/dc to 250 Vac/dc)
Optional LEDs***
GLD Series with 2 LED pilot lights in front cover (supply voltage 18 Vdc to 30 Vdc)
*All normally closed (NC) contacts are positive opening .
**A600 for 1NC/1NO contacts.
*** When switch includes LED pilot lights, the switch voltage is limited to the rated LED voltage.
Table 2. Electrical Rating
ac dc gold-plated contacts
A300/A600** AC15
Ue Ie VA Rating Ue Ie VA Rating 1 V 10 A min.
Volts Amps Make Break Volts Amps Make Break 50 V 100 mA max.
120 6 7200 720 24 2.8 69 69
240 3 7200 720 125 0.55 69 69
380 1.9 7200 720 250 0.27 69 69
480 1.5 7200 720
500 1.4 7200 720
600 1.2 7200 720
2 sensing.honeywell.com