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