MICRO SWITCH Key Actuated Safety Switches 004740 GKN Series Issue 3 Datasheet FEATURES Red switch body for easy safety recognition Four different styles of stainless steel actuator keys Three conduits with 0.5-14 NPT or M20 thread connection Positive opening action of normally closed contacts to EN/IEC 60947-5-1-3 specification Three contacts 2NC/1NO or 3NC Switch chamber environmentally sealed to IP67 and NEMA 1, 4X (indoor), 12, and 13 CCC, CE, and UL certifications Designed and agency evaluated for safety functions up to and including a SIL3 level POTENTIAL APPLICATIONS DESCRIPTION Safety interlock for guards or doors on equipment and The GKN Series key-actuated safety interlocking limit switches machinery are designed for applications where machine guarding is Designed for hinge or sliding guards or doors required. Up to 3 normally closed contacts are available per switch to meet most control circuit applications. All normally DIFFERENTIATION closed contacts are positive opening . Direct mechanical Up to three NC contacts for control, signaling, or contact linkage within the switch force the normally closed contacts redundancy open when the actuator key is removed from the switch. When Four actuator key entry positions the actuator key is re-inserted into the switch, the contacts Optional flexible key for small door radius change state. The double-insulated plastic housing and Optional funnel key where door misalignment may occur stainless steel actuator-key are designed for demanding environments with the internal switch enclosure being PORTFOLIO environmentally sealed. The design of the switch allows 4 In addition to the GKN Series safety interlocking limit switches, actuator-key entry locations for installation flexibility. Three Honeywell offers other safety interlocking limit switches. These conduits are integral to each switch for convenience of include the miniature plastic body GKM series, EN50047 electrical connections. plastic body GKE Series, EN50041 metal body GKB Series, and metal body solenoid (trapped key) GKL/R Series. Non- VALUE TO CUSTOMERS interlocking safety limit switches include the GSS Series, non- Common mounting footprint for ease of installation contact FF Series, and 1CPS Series and 2CPS Series cable/ Double insulated housing, no ground required rope pull safety limit switches. Large wiring cavity with three conduit entries Sensing and Internet of ThingsKey-Actuated Safety Switches, GKN Series Table 1. Performance Specifications Characteristic Parameter Description Multi-entry, key-operated safety switch Agency certifications cULus, CE, CCC Housing material Glass-filled nylon Actuator key material Stainless steel Electrical connection Three conduits, 20 mm or 0.5-14 NPT Contact/switch options 3NC or 2NC/1NO Contact type Slow action break-before-make (BBM), or slow action Contact design Double break, electrically separated (Zb) Contact material Silver alloy Electrical ratings See table 2 below Utilization category AC-15, A600 DC-13, Q300 Rated operational 120 Vac, 240 Vac, 600 Vac 125 Vdc, 250 Vdc voltage (Ue) Rated operational 6 A, 3 A, 1.2 A 0.55 A, 0.27 A current (Ie) Thermal current (Ith) 10 A Rated insulation (Ui) 600 V Rated impulse withstand 2500 V voltage (Uimp) Short circuit protection Class J fuse (10 A/600 V) device (SCPD) 2 (micro-environment, inside enclosure) Pollution degree 3 (macro-environment, installation environment) Environmental sealing IP67, NEMA 1, 4X (indoor), 12, and 13 Operating temperature -25 C to 70 C -13 F to 158 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 of 100% MCTF (Electrical life) >25,000 cycles with single-sided confidence of 75% SIL Capability SIL 2 capable with HFT = 0 SIL 3 capable with HFT =1 Proof test interval 1 year All normally closed contacts are positive opening . Safety Integrity Level 3 HFT (Hardware Fault Tolerance) Table 2. Electrial Ratings AC DC A600 AC15 Q300 DC13 Ue Ie Ue Ie Volts Amps Volts Amps 120 6 125 0.55 240 3 250 0.27 600 1.2 2 sensing.honeywell.com